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LOW DROPOUT (LDO) LINEAR REGULATORSSELECTION GUIDE

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Introduction

Analog Devices’ Power by Linear™ product group produces a broad line of high performance low dropout (LDO) linear regulators. These LDOs offer very low dropout, fast transient response, excellent line and load regulation, and feature a very wide input voltage range from 0.9 V to 80 V. Output currents range from 100 mA to 10 A, with positive, negative and multiple outputs. Many devices offer output voltage operation <0.8 V and some feature operation down to as low as 0 V even with single-supply operation. Many are stable with ceramic output capacitors. These devices can be designed into virtually any end ap-plication and market segment.

Contents

Positive LDOsUltraLow Noise (<2 µVRMS) Positive Linear Regulators 3Low Noise (<10 µVRMS) Low Power Positive Linear Regulators 4Positive Linear Regulators 6Chip Scale Package Linear Regulators 8Very Low Dropout Low VIN (VLDO) Linear Regulators 9Low VIN, Low Noise, High Current Linear Regulators 10Low Quiescent Current Linear Regulators 11High Voltage Linear Regulators 12Current-Based Reference Linear Regulators 13

Negative LDOsLow Noise Negative Linear Regulators 5

Current SourcesCurrent Sources 13

Multi-Channel LDOsMulti-Channel Output Linear Regulators 14

Radiation-Hardened LDOsRadiation Hardened (RH) Linear Regulators 15


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UltraLow Noise (<2 µVRMS) Positive Linear Regulators

LT3045/LT3045-1: 20 V, 500 mA, Ultralow Noise, Ultrahigh PSRR Linear Regulator

ADM7154: 600 mA, Ultralow Noise, High PSRR, RF Linear Regulator

UltraLow Noise (<2 µVRMS) Linear Regulators

Part Number IOUT (A)

VIN Range (V)

VOUT Range (V)

RMS Noise (µVRMS)

Noise Density, 10 kHz (nV/√Hz)

Typ PSRR at 1 MHz, (dB)

Dropout Voltage (mV)

Quiescent Current (mA)

Package Options (mm)

LT3042 0.2 1.8 to 20 0 to 15 0.8* 2 79 350 1.9 3 × 3 DFN-10, MSOP-10E

LT3045/LT3045-1 0.5 1.8 to 20 0 to 15 0.8* 2 76 260 2.2 3 × 3 DFN-10,

MSOP-12E

ADM7154 ADM7155 0.6 2.3 to 5.5 1.2 to 3.3 Fixed/

1.2 to 3.4 Adj 0.9** 1.5 58 120 4 3 × 3 LFCSP-8, SOIC-8

ADM7150 ADM7151 0.8 4.5 to 16 1.8 to 5 Fixed/

1.5 to 5.1 Adj 1.0** 1.7 62 600 4.3 3 × 3 LFCSP-8, SOIC-8

ADP7156 ADP7157 1.2 2.3 to 5.5 1.2 to 3.3 Fixed/

1.2 to 3.3 Adj 0.9** 1.7 60/55 120 4 3 × 3 LFCSP-10, SOIC-8

ADP7158 ADP7159 2 2.3 to 5.5 1.2 to 3.3 Fixed/

1.2 to 3.3 Adj 0.9** 1.7 50/45 200 4 3 × 3 LFCSP-10, SOIC-8

*10 Hz to 100 kHz **100 Hz to 100 kHz

IN

EN/UV

VIN1.8 V

to 20 V

VOUT Down to 0V at 500 mA

LT3045

PG

SET GND ILIM PGFB

OUTS

OUT

0.8 µVRMS Output Noise2 nV/√Hz Spot Noise

VIN = 5 VRSET = 33.2 kCOUT = 10 µFCSET = 4.7 µF

LOAD CURRENT (mA)

0 50 100 150 200 250 300 350 400 450 5000

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

RM

S O

UT

PU

T N

OIS

E (µ

VR

MS)

Integrated RMS Output Noise (10 Hz to 100 kHz)

Noise Spectral Density for Various Values of CBYP

VOUT

REF_SENSE

REF

VIN

EN

ADM7154

GND

CREF1 µF

CIN10 µF

COUT10 µF

OFF

ON

VIN = 3.8 V VOUT = 3.3 V

BYPCBYP1 µF

VREGCREG10 µF

NO

ISE

SP

EC

TR

AL

DE

NS

ITY

(nV

/√H

z)

FREQUENCY (Hz)

1 M0.1 1 10 100 1 k 10 k 100 k0.1

1

10

100

10 k

1 k

NOISE FLOOR1.0 µF3.3 µF10 µF33 µF100 µF330 µF1000 µF



Low Noise (<10 µVRMS) Low Power Positive Linear Regulators

Low Noise (<10 µVRMS) Low Power Positive Linear Regulators


VIN Range (V)

VOUT Range (V)

RMS Noise (µVRMS)*

Noise Density, 10 kHz (nV/√Hz)

Typ PSRR at 1 MHz, (dB)

Dropout Voltage (mV) Quiescent Current Package Options

(mm)

ADM7160 0.2 2.2 to 5.5 1.1 to 3.3 9 25 46 150 10 µA 2 × 2 LFCSP-6, TSOT-5

ADM7170 0.5 2.3 to 6.5 1.2 to 5 5^ 12 60 42 700 µA 3 × 3 LFCSP-8

ADM7171 1 2.3 to 6.5 1.2 to 5 5^ 12 60 42 700 µA 3 × 3 LFCSP-8

ADM7172 2 2.3 to 6.5 1.2 to 5 5^ 12 60 42 700 µA 3 × 3 LFCSP-8

ADP1764 4 1.1 to 1.98 Fixed 3^ 5 36 47 5 mA 3 × 3 LFCSP-16

ADP1765 5 1.1 to 1.98 Fixed 3^ 5 33 59 5 mA 3 × 3 LFCSP-16

^100 Hz to 100 kHz

ADM7172: 6.5 V, 2 A, Ultralow Noise, High PSRR, Fast Transient Response CMOS LDO

ADM7160: 600 mA, Ultralow Noise, High PSRR, RF Linear Regulator

Transient Response (Trace 2), 1 mA to 1.5 A Load Step in 400 ns (Trace 1)

RMS Noise vs Load Current, 10 Hz to 100 kHz

ADM7172

GND

VIN

VIN

VOUT

SENSE

CSS1 nF

CIN4.7 µF

COUT4.7 µF

OFF

ON

VIN = 5 V VOUT = 3.3 V

SSEN

CH1 1.0A ΩBW CH2 20mV BW M400ns A CH3 100mV

T 0.0%

1

2

T

1

2

3

5

4

16-Bit/18-Bit ADC

CIN4.7 µF

COUT4.7 µF

VOUT = 2.5 VVIN = 2.9 VVOUT

NC

VIN

GND

ADM7160

ENOFF

ON

NC = NO CONNECTVDD

VDD

IN+

IN–

VREFDVDD

DIGITALOUTPUT

1.8 V to 5 V

2.5 V to 5 V

0 V TO VREF

1

10

100

0.01 0.1 1 10 100 1000

NO

ISE

(µV R

MS)

ILOAD (mA)

VOUT = 3.3 VVOUT = 2.5 VVOUT = 1.8 V


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Low Noise Negative Linear Regulators

Low Noise Negative Linear Regulators


VIN Range (V)

VOUT Range (V)

RMS Noise (µVRMS)

Dropout Voltage (mV) Quiescent Current Package Options (mm)

ADP7182 0.2 –2.7 to –28 –1.22 to –27 18** 185 650 µA 2 × 2 LFCSP-6, 3 × 3 LFCSP-8, TSOT-5

LT1964 0.2 –1.9 to –20 –1.22 to –20 30* 340 30 µA 3 × 3 DFN-8 SOT-23

ADP7183 0.3 –2.0 to –5.5 –0.5 to –5 4 (Indep of VOUT)** 130 600 µA 2 × 2 LFCSP-8

ADP7185 0.5 –2.0 to –5.5 –0.5 to –5 4 (Indep of VOUT)** 190 600 µA 2 × 2 LFCSP-8

LT3094 0.5 –2 to –20 0 to –19.5 0.8* 235 2.35 mA 3 × 3 DFN-12 MSOP-12E

LT1175 0.5 –4.3 to –20 –3.8 to –20 No Spec 500 45 µA DDPAK-5, N-8, SOIC-8, SOT-223, TO-220

LT3090 0.6 –1.5 to –36 0 to –32 18* 300 1 mA

3 × 3 DFN-10, MSOP-12E, DDPAK-7,

TO-220, TSSOP-16

LT3091 1.5 –1.5 to –36 0 to –32 18* 300 1 mA3 × 3 DFN-10,

4 × 3 DFN-14, DDPAK-7, TO-220, TSSOP-16

LT1185 3 –4.2 to –35 –2.37 to –35 No Spec 670 2.5 mA DDPAK-5 TO-220

*10 Hz to 100 kHz **100 Hz to 100 kHz

LT3094: –20 V, –500 mA UltraHigh PSRR, UltraLow Noise Linear Regulator

ADP7185: –500 mA, Ultralow Noise, High PSRR, Low Dropout Linear Regulator

VIN = –5 VRSET = 33.2 kCOUT = 10 µFCSET = 4.7 µF

LOAD CURRENT (mA)

0 –100 –200 –300 –400 –5000

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

RM

S O

UT

PU

T N

OIS

E (µ

VR

MS)

PG

3.3 V

VIN–2 V to

–20 V

VOUT0 V to –19.5 Vat 500 mA

SET GND ILIM PGFB

EN/UV

LT3094

IN

OUTS

OUT

100 µA

+–

Only 0.85 µVRMS Noise(10 Hz-100 kHz)

Integrated RMS Output Noise (10 Hz to 100 kHz)

Noise Spectral Density (NSD) vs Frequency at Various Output Voltages

NS

D (n

V/√

Hz)

FREQUENCY (Hz)

10 100 1 k 10 k 100 k 1 M 10 M

–4.5 V ADJ–4.5 V–3.3 V–2.5 V–1.2 V

0.1

1

10

100

1k

10k

VOUT = –2.5 VCOUT4.7 µF

+1.25 V

0 V

–1.3 V

OFF

ON

VIN

EN

VREG GND

VOUT

SENSE

VA

VAFB

CIN4.7 µF

VIN = –3 V

CREG1 µF

ADP7185

CA1 µF

CAFB10 nF

R224.9 kΩ

R1100 kΩ

EP



Positive Linear Regulators



VIN Range (V)

VOUT Range (V)

RMS Noise (µVRMS)


(mm)

LT3014/LT3014B 0.2 3 to 80 Adj (1.22 to 60) 115/150* 350 7 µA 3 × 3 DFN-8, SOT-23

LT3010/LT3010B LT3011 0.5 3 to 80 Adj (1.275 to 60), 5

Adj (1.24 to 60) 100* 300 30 µA 45 µA

MSOP-8E 3 × 3 DFN-10,

MSOP-12E

LT1761 0.1 1.8 to 20 Adj (1.22 to 19.5), Fixed 20* 300 20 µA TSOT-5

LT3050 0.1 1.6 to 45 0.6 to 44.5 30* 340 45 µA 2 × 3 DFN-12, MSOP-12E

LT3060 0.1 1.6 to 45 0.6 to 44.5 30* 300 40 µA 2 × 2 DFN-8, TSOT-8

LT3061^ 0.1 1.6 to 45 0.6 to 44.5 30* 250 45 µA 2 × 3 DFN-8, MSOP-8E

LT1762 0.15 1.8 to 20 Adj (1.22 to 19.5), Fixed 20* 270 25 µA MSOP-8

LT1121/LT1121A/LT1121HV 0.15 4.2 to 30/36 3.75 to 29/35, Fixed N/A 420 30 µA SOT-223, SOIC-8

TO-92, PDIP-8

ADP7142 0.2 2.7 to 40 Adj (1.2 to 39) 11** 200 50 µA 2 × 2 LFCSP-6, SOIC-8E, TSOT-5

ADP7118 0.2 2.7 to 20 Adj (1.22 to 19) Fixed 1.2 to 5 11** 200 50 µA 2 × 2 LFCSP-6,

SOIC-8, TSOT-5

ADP7112 0.2 2.7 to 20 Adj (1.22 to 19) Fixed 1.2 to 5 11** 200 50 µA 1 × 1.2 WLCSP-6

LT3062 0.2 1.6 to 45 0.6 to 44.5 30* 300 45 µA 2 × 2 DFN-8, MSOP-8E

LT3063^ 0.2 1.6 to 45 0.6 to 44.5 30* 300 45 µA 2 × 3 DFN-8, MSOP-8E

LT3012/LT3012B LT3013 0.25 4 to 80 Adj (1.24 to 60) 100* 400 40 µA

65 µA4 × 3 DFN-12,

TSSOP-16

ADP7142: 40 V, 200 mA, Low Noise, CMOS LDO Linear Regulator

LT3065: 45 VIN, 500 mA Low Noise, Linear Regulator with Programmable Current Limit and Power Good

Power Supply Rejection Ratio (PSRR) vs Frequency, VOUT = 3.3 V, for Various Headroom Voltages

IN

PWRGD

VIN1.8 V

to 45 V

VOUT Down to 0.6 Vat 500 mA

LT3065

REF/BYP

GND

IMAX

OUT

ADJSHDN

Only 25 µVRMS Noise

(10 Hz-100 kHz)

TEMPERATURE (°C)

–75

CU

RR

EN

T L

IMIT

(mA

)204

212

220

125

196

188

200

208

216

192

184

180–25 25 75–50 1500 50 100 175

VIN = 5.6 V

VIN = 10 V

VOUT(NOMINAL) = 5 V

Precision Current Limit, RIMAX = 1.5 k

GNDEN SS

VIN VOUT

ADP7142

ON

OFF

VIN = 7 V VOUT = 6 V

SENSE/ADJCIN2.2 µF

COUT2.2 µF

CSS1 nF

2 kΩ

10 kΩ

10 10M1M100k10k1k100

PS

RR

(dB

)

FREQUENCY (Hz)

–120

–100

–80

–60

–40

–20

0

3.0 V2.0 V1.6 V1.4 V1.2 V1.0 V800 mV700 mV600 mV500 mV


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VIN Range (V)

VOUT Range (V)

RMS Noise (µVRMS)


(mm)

LT1521 0.3 4.3 to 20 Adj (3.75 to 19), Fixed N/A 500 12 µASOT-223 SOIC-8 MSOP-8

LT1962 0.3 1.8 to 20 Adj (1.22 to 19.5), Fixed 20* 270 30 µA MSOP-8


SOIC-8

ADP170, ADP172 0.3 1.6 to 3.6 Fixed 30 66 23 µA TSOT-5

LT1763 0.5 1.8 to 20 Adj (1.22 to 19.5), Fixed 20* 300 30 µA 3 × 4 DFN-12 SOIC-8


SOIC-8

ADP7105 0.5 3.3 to 20 Adj (1.22 to 19) Fixed 1.8, 3.3, 5 15** 350 900 µA 3 × 3 LFCSP-8,

SOIC-8

LT3055 0.5 2 to 45 0.6 to 44.5 25* 350 65 µA 3 × 4 DFN-16, MSOP-16E

LT3065 0.5 2 to 45 0.6 to 44.5 25* 300 55 µA 3 × 3 DFN-10, MSOP-12E

LT3066^ 0.5 2 to 45 0.6 to 44.5 25* 300 64 µA 3 × 4 DFN-12, MSOP-12E

LT1129 0.7 4.2 to 30 Adj (3.75 to 29), Fixed 93* 400 50 µA

SOT-223 SOIC-8 DD-Pak TO-220

TSSOP-20

LT1117 0.8 2.5 to 15 Adj (1.25 to 14), Fixed N/A 1200 5 µA SOT-223 DD-Pak

LT1118 –0.4/0.8 3 to 15 Adj (1.225 to 14), Fixed N/A 1000 600 µA SOT-223 SOIC-8

LT1965 1.1 1.8 to 20 Adj (1.2 to 19.5), Fixed 40* 310 500 µA

3 × 3 DFN-8 MSOP-8E DD-Pak TO-220

LT1963/LT1963A 1.5 2.1 to 20 Adj (1.21 to 19.5), Fixed 40* 340 1 mA

SOT-223 SOIC-8 DD-Pak TO-220

TSSOP-16E

LT1086 1.5 2.6 to 25 Adj (1.25 to 23.5), Fixed 0.003 % of VOUT***

1300 5 mA DD-Pak TO-220

LT1764/A 3 2.7 to 20 Adj (1.21 to 19.5), Fixed 40* 340 1 mADD-Pak TO-220

TSSOP-16E

LT1085 3 2.6 to 30 Adj (1.25 to 28.5), Fixed 0.003 % of VOUT***

1300 5 mA DD-Pak TO-220

LT1529 3 3.9 to 15 Adj (3.75 to 14), 3.3, 5 N/A 600 50 µA DD-Pak TO-220


1200 8 mA DD-Pak TO-220

LT1585/LT1585A 4.6/5 2.7 to 7 Adj (1.25 to 5.5), Fixed 0.003 % of VOUT***

1100/1200 8 mA DD-Pak TO-220


1300 5 mADD-Pak TO-220 TO-3P

LT1584 7 2.5 to 7 Adj (1.25 to 5.5), Fixed

0.003 % of VOUT***

1250 8 mA TO-220

LT1580 7 1.8 to 6 Adj (1.25 to 5.4), 2.5 N/A 540 10 mA DD-Pak TO-220

LT1581 10 1.7 to 6 Adj (1.25 to 5.5), 2.5 N/A 430 10 mA TO-220

^ Active Output Discharge * 10 Hz to 100 kHz

** 100 Hz to 100 kHz *** 10 Hz to 10 kHz

Positive Linear Regulators (continued)



Chip Scale Package Linear Regulators

Chip Scale Package Linear Regulators

Part Number IOUT Range (A)

VIN Range (V)

VOUT Range (V)

RMS Noise (µVRMS)*


Quiescent Current (µA)


ADP160 to ADP166 0.15 2.2 to 5.5 Fixed 80 150 42 1 × 1 WLCSP-4, 2 × 2 LFCSP-6, TSOT-4

ADP150 0.15 2.2 to 5.5 Fixed 9 105 100.8 × 0.8 WLCSP-4

TSOT-5, 2 × 2 LFCSP-6

ADP7112 0.2 3.3 to 20 Fixed 11 200 501 × 1.2 WLCSP, 2 × 2 LFCSP-6, TSOT-5, SOIC-8

ADP7118 0.2 3.3 to 20 Fixed 11 200 501 × 1.2 WLCSP, 2 × 2 LFCSP-6, TSOT-5, SOIC-8

ADP151 0.2 2.2 to 5.5 Fixed 9 105 100.8 × 0.8 WLCSP-4


ADM7160 0.2 2.2 to 5.5 Fixed 9 105 100.8 × 0.8 WLCSP-4


ADP120 to ADP125 0.15 to 0.5 2.3 to 5.5 Fixed 25~40 60 110.8 × 0.8 WLCSP-4


ADP172 0.3 1.6 to 3.6 Fixed 30 66 23 WLCSP-4

ADP220 to ADP225 0.2 to 0.3 2.5 to 5.5 Fixed 27 150 60 1 × 1.5 WLCSP, 2 × 2 LFCSP-8

*10 Hz to 100 kHz

ADP151: Ultralow Noise, 200 mA CMOS Linear Regulator ADP121: 150 mA, Low Quiescent Current, CMOS Linear Regulator in 5-Lead TSOT or 4-Ball WLCSP

Output Noise vs Load Current and Output Voltage, VIN = 5 V, COUT = 1 μF Power Supply Rejection Ratio

vs Frequency

VIN VOUT

1 2

EN GND

COUT1 µF

CIN

VOUT = 1.8 VVIN = 2.3 V

ADP151A

BOFF

ON

14

0

1

2

3

4

5

6

7

8

9

10

11

12

13

0.001 0.01 0.1 1 10 100 1 k

NO

ISE

(µV

rm

s)

LOAD CURRENT (mA)

3.3 V2.8 V1.2 V1.1 V

VIN VOUT

EN GND

COUT1 µF

CIN1 µF

VOUT = 1.8 VVIN = 2.3 V

OFF

ON

ADP121

0

–10

–20

–30

–40

–50

–60

–70

–80

–90

–10010 100 1 k 10 k 100 k 1 M 10 M

FREQUENCY (Hz)

PS

RR

(dB

)

VRIPPLE = 50 mVVIN = 5 VVOUT = 1.2 VCOUT = 1 µF

150 mA100 mA10 mA1 mA100 µA0 µA


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Very Low Dropout Low VIN (VLDO) Linear Regulators

Very Low Dropout Low VIN (VLDO) Linear Regulators


VIN Range (V)

VOUT Range (V)

RMS Noise (µVRMS)*


(mm)

LT3020 0.1 0.9 to 10 Adj (0.9 to 9.5), Fixed 245 150 120 µA 3 × 3 DFN-8 MSOP-8

LTC1844 0.15 1.6 to 6.5 Adj (1.25 to 6), Fixed 60 110 35 µA TSOT-5

LTC3025 0.3 0.9 to 5.5 Adj (0.4 to 3.6), Fixed 80 45 54 µA 2 × 2 DFN-6

LTC3035 0.3 1.7 to 5.5 Adj (0.4 to 3.6) 150 50 100 µA 2 × 2 DFN-6

LT3021 0.5 0.9 to 10 Adj (0.9 to 9.5), Fixed 300 160 120 µA 5 × 5 DFN-16 SOIC-8

LTC3025-x 0.5 0.9 to 5.5 Adj (0.4 to 3.6), Fixed 80 80 54 µA 2 × 2 DFN-6

LT3022 1 0.95 to 10 Adj (0.2 to 9.5), Fixed 165 150 400 µA 3 × 5 DFN-16 TSSOP-16E

ADP1761 1 1.1 to 1.98 Adj (0.5 to 1.5), Fixed 12 50 7.3 mA 3 × 3 LFCSP

LTC3026 1.5 1.14 to 5.5 Adj (0.4 to 2.6) 110 100 400 µA 3 × 3 DFN-10 MSOP-10E

ADP1762 2 1.1 to 1.98 Adj (0.5 to 1.5), Fixed 12 62 9.4 mA 3 × 3 LFCSP

ADP1763 3 1.1 to 1.98 Adj (0.5 to 1.5), Fixed 12 95 12 mA 3 × 3 LFCSP

LT3033 3 0.95 to 10 0.2 to 9.7 60 95 1.9 mA 3 × 4 QFN-20



LT3070 5 0.9 to 3.0 VBIAS: 2.2 to 3.6 Adj (0.8 to 18) 25 85 1.1 mA 4 × 5 QFN-28

LT3071 5 0.9 to 3.0 VBIAS: 2.2 to 3.6 Adj (0.8 to 1.8) 25 85 1.1 mA 4 × 5 QFN-28

*10 Hz to 100 kHz

ADP1761: 1 A, Low VIN, Low Noise, CMOS Linear Regulator

LT3033: 3 A, 0.95 V to 10 V Very Low Dropout Linear Regulator

Dropout Voltage vs Load Current, VOUT = 1.3 V

IL = 3 A

TEMPERATURE (°C)

–75 –50 –25 0 25 50 75 100 125 150 1750

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

MIN

IMU

M IN

PU

T V

OLT

AG

E (V

)

Minimum Input Voltage vs Temperature

IN

PWRGD

VIN0.95 V

to 10 V

VOUT 0.2 V to 9.7 Vat up to 3 A

LT3033

IMONGND REF/BYP

ILIM

OUT

ADJSHDN

VLDO: 95 mV Dropout

VIN

EN

SS

VREG

VOUT

SENSE

PG

RPULL-UP100 kΩ

PG

VADJ

GND

REFCAPCREG1 µF

CREF1 µF

RADJ10 kΩ

CSS10 nF

ON

OFF

VOUT = 1.5 VADP1761VIN = 1.7 V

COUT10 µF

CIN10 µF

0

5

10

15

20

25

30

35

0.1 1

DR

OP

OU

T V

OLT

AG

E (m

V)

LOAD (A)



Low VIN, Low Noise, High Current Linear Regulators

Low VIN, Low Noise, High Current Linear Regulators


VIN Range (V)

VOUT Range (V)

RMS Noise (µVRMS)*


Quiescent Current (mA)


ADP1752 0.8 1.6 to 3.6 Fixed 0.75 to 2.5 23 140 1.4 4 × 4 LFCSP-16

ADP1753 0.8 1.6 to 3.6 Adj (0.75 to 3.3) 23 140 1.4 4 × 4 LFCSP-16

ADP1761 1 1.1 to 1.98 Fixed 12 30 7.3 3 × 3 LFCSP-16

ADP1754 1.2 1.6 to 3.6 Fixed 0.75 to 2.5 23 200 1.4 4 × 4 LFCSP-16

ADP1755 1.2 1.6 to 3.6 Adj (0.75 to 3.3) 23 200 1.4 4 × 4 LFCSP-16

ADP1762 2 1.1 to 1.98 Fixed 12 62 9.4 3 × 3 LFCSP-16

ADP1740 2 1.6 to 3.6 Fixed 0.75 to 2.5 23 160 1.4 4 × 4 LFCSP-16

ADP1741 2 1.6 to 3.6 Adj (0.75 to 3.3) 23 160 1.4 4 × 4 LFCSP-16

ADP1763 3 1.1 to 1.98 Fixed 12 95 12 3 × 3 LFCSP-16



LT3070 5 0.95 to 3.0 Adj (0.8 to 1.8) 25 85 1.1 4 × 5 QFN-28

LT3071^ 5 0.95 to 3.0 Adj (0.8 to 1.8) 25 85 1.1 4 × 5 QFN-28

^VOUT Margining *10 Hz to 100 kHz

ADP1765: 5 A, Low VIN, Low Noise, CMOS Linear Regulator

LT3071: 5 A, Low Noise, Programmable Output, 85 mV Dropout Linear Regulator with Analog Margining

IN

EN

MARGA

BIAS

V00

V01

V02

VIN0.95 V

to 3.0 V

Tie High,Low or

Float

VBIAS2.2 V

to 3.6 V

VOUT0.8 V to 1.8 VUp to 5 A

LT3071

VIOCGND

IMON

REF/BYP

OUT

SENSE

PWRGD

PGOOD

VIN - VOUTDropout VoltageOnly 85 mV

DigitallyProgrammable OutputAnalog

Margining ±10%

OUTPUT CURRENT (A)

0

DR

OP

OU

T V

OLT

AG

E (m

V)

90

120

150

4

60

30

01 2 3 5

VOUT = 1.8 VVBIAS = 3.3 V

VOUT = 0.8 VVBIAS = 2.5 V

VIN = VOUT(NOMINAL)

Dropout Voltage

Dropout Voltage (VDROPOUT) vs Load Current (ILOAD), VOUT = 1.3 V

VIN

EN

SS

VREG

VOUT

SENSE

PG

RPULL-UP100 kΩ

PG

VADJ

GND

REFCAPCREG1 µF

CREF1 µF

RADJ10 kΩ

CSS10 nF

ON

OFF

VOUT = 1.5 VADP1765VIN = 1.8 V

COUT22 µF

CIN22 µF

0.1 1 10

VD

RO

PO

UT (V

)

LOAD CURRENT (A)

0

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0.08

0.09

0.10


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Low Quiescent Current Linear Regulators

Low Quiescent Current Linear Regulators

Part Number IOUT (mA)

VIN Range (V)

VOUT Range (V)


Supply Current (µA)

RMS Noise (µVRMS)*


LT3007^ 20 2 to 45 Adj (0.6 to 44.5), Fixed 300 3 92 SOT-23, 2 × 2 DFN-6

LT3008 20 2 to 45 Adj (0.6 to 44.5), Fixed 300 3 92 SOT-23, 2 × 2 DFN-6

LT3009 20 1.6 to 20 Adj (0.6 to 19), Fixed 280 3 150 2 × 2 DFN-6, SC-70

LT3014/LT3014B 20 3 to 80 Adj (1.22 to 60) 350 7 115/150 3 × 3 DFN-8, SOT-23

ADP160 to ADP166 150 2.2 to 5.5 Adj (1.0 to 4.2), Fixed 120 0.59 80 1 × 1 WLCSP-4, 2 × 2 LFCSP-6, TSOT-4

^FMEA Fault Tolerant *10 Hz to 100 kHz

LT3008: 3 μA IQ, 20 mA, 45 V Low Dropout Linear Regulator

ADP165/ADP166: Very Low Quiescent Current, 150 mA, with Output Discharge LDO Regulators

Dropout Voltage/ Quiescent Current

TEMPERATURE (°C)

DR

OP

OU

T V

OLT

AG

E (m

V)

QU

IES

CE

NT

CU

RR

EN

T (µA

)

400

200

100

50

0

500

300

250

150

5

350

2

3

1

0

6

450

4

–50 –25 0 25 50 75 100 125 150

ILOAD = 20mADROPOUTVOLTAGE

IQ

INVIN2 V to

45 V

VOUT Down to 0.6 V at 20 mA

LT3008

GND

OUT

ADJSHDN

High VINUltralow IQ = 3 µA

Ground Current vs Junction Temperature

VIN VOUT

1 2

EN GND

1 µF1 µF

VOUT = 1.8 VVIN = 2.3 V

ADP165/ADP166A

BOFFON

100

0.1

1

10

–50 –25 0 25 50 75 100 125 150

GR

OU

ND

CU

RR

EN

T (µ

A)

JUNCTION TEMPERATURE (°C)

NO LOAD1 µA100 µA1 mA10 mA100 mA150 mA



High Voltage Linear Regulators

High Voltage Linear Regulators

Part Number IOUT (mA)

VIN Range (V)

VOUT Range (V)

RMS Noise (µVRMS)*


Quiescent Current (µA)


LT3014/LT3014B 20 3 to 80 Adj (1.22 to 60) 115/150 350 7 3 × 3 DFN-8, SOT-23

LT3010/LT3010B 50 3 to 80 Adj (1.275 to 60), 5 100 300 30/45 MSOP-8E, 3 × 3 DFN-10

LT3011^ 50 3 to 80 Adj (1.24 to 60), 5 100 300 30/45 3 × 3 DFN-10, MSOP-12E

LT3012/LT3012B 250 4 to 80 Adj (1.24 to 60) 100 400 40/65 4 × 3 DFN-12, TSSOP-16

LT3013^ 250 4 to 80 Adj (1.24 to 60) 100 400 40/65 4 × 3 DFN-12, TSSOP-16

^Power Good *10 Hz to 100 kHz

LT3010: 50 mA, 3 V to 80 V Low Dropout Micropower Linear Regulator

LT3012/LT3013: 250 mA, 4 V to 80 V Low Dropout Micropower Linear Regulators

VIN3 V to 80 V

1 µF 1 µF

VOUT 5 V at 50 mA

LT3010

GND

Thermally EnhancedMSOP-8 Package

IQ = 30 µA

INVIN = 3 V to 80 V

1.275 V to 60 V1 µF

3.3 µF

LT3012/LT3013

GND

OUT

ADJSHDN

Micropower; IQ = 40 µALow Dropout; 400 mVPower Good Flag (LT3013)

VOUTVIN

OUTPUT CURRENT (mA)

0

250

300

400

350

200

200

150

50 100 150 250

100

50

0

DR

OP

OU

T V

OLT

AG

E (m

V)

FREQUENCY (Hz)

10

40

RIP

PLE

RE

JEC

TIO

N (d

B)

50

60

70

80

100 1k 10k 100k 1M

30

20

10

0

90

100VIN = 7V + 50 mVRMS RIPPLEIL = 50 mA

COUT = 10 µF

COUT = 1 µF

Dropout Voltage

Input Ripple Rejection


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LT3081: 1.5 A Single Resistor Rugged Linear Regulator with Monitors

LT3080/LT3080-1: Adjustable 1.1 A Single Resistor Low Dropout Regulator

Current-Based Reference Linear Regulators

Current Sources

Part Number IOUT

VIN Range (V)

Initial Accuracy

(%)

Current Regulation

(ppm/V)

Reverse Protection

V/I

Quiescent Current

(µA)

Current Limiting

Thermal Protection


LT3092 0.5 mA to 200 mA 1.2 to 40 1 <10 Yes/Yes 300 Yes Yes 3 x 3 DFN-8/TSOT23-8/SOT-223

LM334 1 µA to 10 mA 0.8 to 40 3 200 No/Yes 280 No No TO-92/SOIC-8

Current-Based Reference Linear Regulators


VIN Range (V)

VOUT Range (V)

RMS Noise (µVRMS)*

Dropout Voltage Quiescent Current Package Options (mm)

LT3082 0.2 1.2 to 40 Adj (0 to 38.5) 33 1.3 V 500 µA 3 × 3 DFN-8/TSOT23-8/SOT-223

LT3085 0.5 1.2 to 36 Adj (0 to 35.7) 33 275 mV# 1 mA 2 × 3 DFN-6/MSOP-8E

LT3088 0.8 1.2 to 36 Adj (0 to 34.5) 27 1.21 V 400 µA 3 × 3 DFN-8/SOT-223/DD-Pak

LT3089 0.8 1.2 to 36 Adj (0 to 34.5) 27 1.21 V 1.1 mA 4 × 4 DFN-12/TSSOP-16/DD-Pak

LT3080/LT3080-1@ 1 1.2 to 36 Adj (0 to 35.7) 40 350 mV# 1.3 V (SOT-223) 1 mA 3 × 3 DFN-8/MSOP-8E/SOT-223/TO-220/DD-Pak

LT3081 1.5 1.2 to 36 Adj (0 to 34.5) 40 1.23 V 1.1 mA 4 × 4 DFN-12 /TSSOP-16E/TO-220/DD-Pak

LT3086 2.1 1.4 to 40 Adj (0.4 to 32) 40 330 mV 1.2 mA 4 × 5 DFN-16/TSSOP-16E/TO-220/DD-Pak

LT3083 3 1.2 to 8/18 ^ Adj (0 to 7.5 or 0 to 17.5^) 40 300 mV 1 mA 4 × 4 DFN-12 /TSSOP-16E/TO-220/DD-Pak

@ Integrated Ballast Resistor ^DD-Pak and TO-220 Packages

*10 Hz to 100 kHz #Dual-Supply Operation

SET Pin Current SET Pin Current Distribution

SET PIN CURRENT DISTRIBUTION (µA)

10.209.90 10.00 10.109.80

N = 13792

TEMPERATURE (°C)

–5049.5

SE

T P

IN C

UR

RE

NT

(µA

)

49.6

49.8

49.9

50.0

50.5

50.2

0 50 75

49.7

50.3

50.4

50.1

–25 25 100 125 150

IL = 5mA

VOUT

VIN1.2 V to

40 V

1 µF 165 k10 µF

SET

SET

IN

VCONTROL

VCONTROL

IN

10 µA

LT3080

OUT

+

–

+

–

10 µA10 mΩ PCBTrace Ballast Output

AdjustableDown to 0 V

OUT

LT3080VOUT0 V to 38.5 V

VIN1.2 V to 40 V

IOUT1 mA to1.5 A

SETTEMP ILIMIMON

ISET50 µA

LT3081 IN

OUT

+–

Wide Safe Operating Area (SOA)



Multi-Channel Output Linear Regulators

Multi-Channel Output Linear Regulators

Part Number # Channels IOUT (A)

VIN Range (V)

VOUT Range (V)

RMS Noise (µVRMS)*


Quiescent Current

(µA)


Positive: 5.5 V MAX VIN

ADP220 to ADP225 2 0.2/0.2 to 0.3/0.3 2.5 to 5.5 Fixed 27 150 60 1 × 1.5 WLCSP,

2 × 2 LFCSPADP320 to ADP323 3 0.2/0.2/0.2 1.8 to 5.5 Fixed 24 110 85 3 × 3 LFCSP-16Positive: 20 V MAX VIN

LT3023 LT3027 2 0.1/0.1 1.8 to 20 Adj (1.22 to 20) 20 300 40 3 × 3 DFN-10,

MSOP-10E

LT3024 LT3028 2 0.1/0.5 1.8 to 20 Adj (1.22 to 20) 20 300 60

3 × 4 DFN-12, TSSOP-16 /

3 × 5 DFN-16, TSSOP-16

LT3029 2 0.5/0.5 1.8 to 20 Adj (1.215 to 19.5) 20 300 110 3 × 4 DFN-16, MSOP-16E

LT3030 2 0.75/0.25 1.7 to 20 Adj (1.22 to 19.5) 20 300 195 4 × 5 QFN-28, TSSOP-20

Positive/NegativeLT3032 2 0.15/0.15 ±2.3 to ±20 Adj, ±3, ±5, ±12, ±15 20/30 300/–340 60 3 × 4 DFN-14*10 Hz to 100 kHz

LT3029: Dual 500 mA/500 mA Low Dropout, Low Noise, Micropower Linear Regulator

ADP323: Triple, 200 mA, Low Noise, High PSRR Voltage Regulator

IN1

IN2

VIN1.8 V to

20 V

VOUT1 Down to 1.22 Vat 500 mA

VOUT2 Down to 1.22 Vat 500 mA

LT3029

GND

OUT1

ADJ1BYP1

SHDN2

SHDN1

3.3 µF3.3 µF

OUT2

ADJ2BYP2 3.3 µF

Only 20 µVRMS Output Noise

IndependentEnable Pins

OUTPUT CURRENT (mA)

0

DR

OP

OU

T V

OLT

AG

E (m

V)

400

350

300

250

200

150

100

50

0400100 200 300 50050 450150 250 350

TJ = 25°C

Dropout Voltage vs Load Current

Power Supply Rejection Ratio vs Frequency, VOUT = 1.5V, VIN = 2.5 V, VRIPPLE = 50 mV, COUT = 1 µF

ADP323VBIAS

VOUT1

GND

VBIAS

1 µFOFF

ONEN1

OFF

ONEN2

OFF

ONEN3

+

1 µF+

LDO 1

EN LD1

VBIAS

VBIAS

VOUT2

1 µF+

LDO 2

EN LD2

VOUT3

FB1

FB2

FB3 1 µF+

LDO 3

EN LD3

2.5 V to5.5 V

VIN1/VIN2

VIN3

1 µF+

1.8 V to5.5 V

1.8 V to5.5 V

1 µF+

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

0

PSR

R (d

B)

10 mA100 mA200 mA

FREQUENCY (Hz)

1 10 100 1k 10k 100k 1M 10M


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Radiation-Hardened (RH) Linear Regulators

Radiation-Hardened (RH) Linear Regulators


VIN Range (V) VREF/IREF Polarity Package Options

RH1086M 0.5/1.5 Up to 25 1.25 V PositiveDICE TO-3

TO-39

RH117 0.5/1.5 Up to 40 1.25 V PositiveDICE TO-3

TO-39

RH3080^ 1 Up to 35 10 µA Positive DICE

RH137 0.5/1.5 Down to –30 –1.25 V NegativeDICE TO-3

TO-39

RH1965 1 2.3 to 20 1.2 V Positive DICE

RH3083^ 3 Up to 23 10 µA Positive DICE

RH1185 3 Down to –35 –2.37 V Negative DICE

RH1573 5 Up to 10 1.265 V Positive DICE

RH1084 5 Up to 25 1.25 V Positive TO-3

^Current Source Reference

ReferencesRobert Dobkin, New Linear Regulators Solve Old Problems, Linear Technology Corporation, Application Note 142, August 2013

Jim Williams, Load Transient Response Testing for Voltage Regulators, Linear Technology Corporation, Application Note 104, October 2006.

Jim Williams, Minimizing Switching Regulator Residue in Linear Regulator Outputs, Linear Technology Corporation, Application Note 101, July 2005.

Todd Owen and Jim Williams, Performance Verification of Low Noise, Low Dropout Regulators, Linear Technology Corporation, Application Note 83, March 2000.

Craig Varga, LT1575 Ultrafast Linear Controller Makes Fast Transient Response Power Supplies, Linear Technology Corporation, Application Note 69, September 1996 (see Appendix A, Using PCB Material as Low Value Resistors).

Goran Perica, Ceramic Input Capacitors Can Cause Overvoltage Transients, Linear Technology Corporation, Application Note 88, March 2001.

Bill Roehr, Mounting Considerations for Power Semiconductors, ON Semiconductor, Application Note 1040/D, May 2001.

Tom Gross, LDO Linear Regulators Rival Switchers for Efficiency, Linear Technology Corporation, Linear Technology Magazine, May 2005.

LT1963A 1.5 A, Low Noise, Fast Transient Response LDO Regulator data sheet, Linear Technology Corporation. All reference materials listed above are available at www.analog.com

Videos/Video Product BriefsLT3009 LT3015 LT3042 LT3070/71 LT3080 LT3081 LT3086 LT3090 LT3092 LT3094 All videos listed above are available at www.analog.com



http://www.analog.com/en/education/education-library/videos.html

Analog Devices, Inc. Worldwide Headquarters

Analog Devices, Inc. One Technology Way P.O. Box 9106 Norwood, MA 02062-9106 U.S.A. Tel: 781.329.4700 (800.262.5643, U.S.A. only) Fax: 781.461.3113

Analog Devices, Inc. Europe Headquarters

Analog Devices GmbH Otl-Aicher-Str. 60-6480807 München Germany Tel: 49.89.76903.0 Fax: 49.89.76903.157

Analog Devices, Inc. Japan Headquarters

Analog Devices, KK New Pier Takeshiba South Tower Building 1-16-1 Kaigan, Minato-ku, Tokyo, 105-6891 Japan Tel: 813.5402.8200 Fax: 813.5402.1064

Analog Devices, Inc. Asia Pacific Headquarters

Analog Devices 5F, Sandhill Plaza 2290 Zuchongzhi Road Zhangjiang Hi-Tech Park Pudong New District Shanghai, China 201203 Tel: 86.21.2320.8000 Fax: 86.21.2320.8222

©2018 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.Ahead of What’s Possible is a trademark of Analog Devices.GLDO-10/18

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EASILY PARALLELED: HIGH OUTPUT CURRENT WITHOUT HOT SPOTSLT3080/LT3080-1

ADJUSTABLE 1.1A SINGLE RESISTOR LOW DROPOUT

REGULATOR

Outputs Can Be Paralleled

Output Current: 1.1A

Low Dropout Voltage:

300mV @ 1.1A

Low Noise:

40µVRMS Wideband (100kHz)

Stable 10µA Current Source

Reference

Single Resistor Programs VOUT

10mΩ PCBTrace Ballast

Output AdjustableDown to 0V

DATA SHEET www.analog.com/LT3080

+

–

LT3080INVIN

1.2V TO 36VVCONTROL

OUT

10µF

VOUTSET

1µF

+

–

LT3080IN

VCONTROL

OUT

SET


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