max38800 evaluation kit - evaluates: max38800 · delivery for precision outputs that demand fast...

Evaluates: MAX38800MAX38800 Evaluation Kit

General DescriptionThe MAX38800 evaluation kit (EV kit) serves as a reference platform for evaluating the MAX38800 voltage regulator IC. This single-chip, integrated switching regulator provides an extremely compact, highly efficient, fast, accurate and reliable power delivery solution for low-output voltage applications. The MAX38800 has different programmability options to enable a wide range of configurations.The EV kit consists of a fully-assembled and tested Printed Circuit Board (PCB) implementation of the MAX38800. Jumpers, test points, and input/output connectors are included for flexibility and ease-of-use. Refer to the data sheet for ordering information and more details.

Applications Servers/µServers I/O and Chipset Supplies GPU Core Supply DDR Memory—VDDQ and VTT Point-of-Load (PoL) Applications

Features High-Efficiency Solution

• Up to 96% Peak• Up to 95.5% Full-Load• Up to 94% Light-Load Efficiency at 1A with

DCM Enabled Inductor valley current limit is Configured to 7.5A

(R_SEL = R1 = 2.67kΩ) Programmable Switching Frequency from 400kHz

to 900kHz Programmable Positive and Negative OCP Limit Programmable Reference Voltage with External

Input Option Fast Transient Response with Quick PWM™

Architecture Differential Remote Sense with Open-Circuit

Detection Percentage-Based Output Power Good and OVP Open-Drain Status Indicator (STAT) Pin Input Undervoltage and Overvoltage Lockout Adaptive Dead Time Control Integrated Boost Switch 19-Bump WLCSP (2.2mm x 2.8mm) Footprint Operation Using Ceramic Input and Output

Capacitors

319-100061; Rev 1; 5/18

Ordering Information appears at end of data sheet.

Quick PWM is a trademark of Maxim Integrated Products, Inc.

Maxim Integrated 2www.maximintegrated.com


Quick StartRequired Equipment

MAX38800 EV kit 12V, 10A DC power supply Load capable of sinking 7.5A Digital voltmeter Oscilloscope

ProcedureThe EV kit is fully assembled and tested. Follow the steps below to verify the board operation. Caution: Do not turn on power supply until all connections are completed.1) Connect a 12V power supply to the VDD1 and GND1

banana jacks.2) Make sure the shunt is installed on:

a) J16 (1-2) to close the sense line.b) J4 (1-2) to power up the on-board LDO which

regulates 1.8V.c) J12 (1-2) to provide the 1.8V bias supply to the

regulator from the on-board LDO.d) J15 (3-5) to pull up the STAT pin.e) J15 (4-6) to pull up the OE pin.

3) Connect a voltmeter to the VOUT and GND banana jacks (J8, J11, J13, and J14 can be used as well).

4) Turn on the power supply.5) Verify that the voltmeter reads 3.3V.

Detailed Description of HardwareThe MAX38800 provides compact, high-efficiency power delivery for precision outputs that demand fast transient response. The 19-ball (2.2mm x 2.8mm) CSP package minimizes the PCB area. The EV kit is preset for 3.3V output and can provide up to 7.5A from a 6.5V to 14V input supply.

Bias SupplyThe MAX38800 EV kit has an on-board LDO (U2) that can provide the required 1.8V VCC bias voltage to both the regulator and pullup voltage for the Output Enable (OE) input. This allows testing the part using a single external power supply. To enable the on-board LDO install the shunt on jumper J4. To effectively use the LDO to supply the VCC bias voltage to the regulator also install the shunt on jumper J12.In order to properly measure the efficiency of the regulator, the LDO should not be active. The shunts on J4 and J12 need to be removed to disable the LDO. An external 1.8V, 0.1A current-limited power supply needs to be connected between J12-2 and ground. The same signal should be connected to J10 (1-2) to pull up the OE pin.

Regulator enableTo enable the regulator, OE pin needs to be pulled high. If the on-board 1.8V LDO is active (the shunt on jumper J4 is in place), the output voltage can be used for the purpose. Installing a shunt on J15 (4-6) pulls the OE signal high to 1.8V through a 20kΩ resistor. To shut down the regulator a shunt needs to be installed on J10. This forces the OE pin low.

Status PinThe MAX38800 has an open collector status (STAT) output to report fault or output undervoltage event. Install a shunt on J15 (3-5) to pull up this pin to VCC through a 20kΩ resistor. Since STAT pin is 3.3V tolerant, a shunt on J15 (1-3) can be installed to pull up this pin through a 20kΩ resistor to the 3.3V provided by the on board regulator U3 (install a shunt on J5 (3-4) to enable the LDO).

Scenario SelectionSeveral parameters of the MAX38800 can be programmed to allow optimization for specific applications. By selecting the appropriate value of resistor R_SEL (R1) and capacitor C_SEL (C4), the optimum set of parameters (scenario) can be programmed. While R_SEL selects the proper scenario, C_SEL determines the nominal FSW. The MAX38800 features a configuration table to provide a wide range of options. Table 1 shows the scenario table for MAX38800.



Setting the Output VoltageThe output voltage of MAX38800 depends both on the reference voltage (VREF) and the resistor divider ratio.Equation 1

= × +

6OUT REF

9

RV V 1

R

The reference voltage is selected through RSEL (see Table 1) and can be either internal or external (refer to the data sheet for more details). In order to optimize the common mode rejection of the error amplifier, choose the voltage divider resistors so that their parallel resistance RPAR is as close as possible to 2kΩ.Equation 2

= ×

= × −

PAR6 OUT

REF

PAR9

6 PAR

RR V

V

RR R6

R R

where,R6 = Top divider resistorR9 = Bottom divider resistorRPAR = Desired parallel resistance of R6 and R9VOUT = Output voltageVREF = Reference voltage

Operation with External VREFWhen using an external reference adopt the configuration shown in Figure 1. Once OE is asserted, the regulator briefly discharges the SENSE- node and releases it as regulation begins. In this case, the soft-start ramp is determined by the external low-pass filter time constant. The external filter time constant needs to be lower than TSS/3 in order to avoid premature assertion of STAT pin while the output voltage is still ramping.The external reference voltage can be applied prior to enabling the regulator, or ramped up right after enable is asserted. In both cases, the low-pass filtered reference voltage at SENSE- pin must reach its final value within TSS.Typical values for the filter components are:

RF = 2.2kΩ CF = 0.22μF

Table 1. MAX38800 Configuration Table

R_SEL (kΩ)

VREF (V)

SOFT-START

TIME (TSS) (ms)

VALLEY OCP

INCEPTION (A)

OPERATION MODES

REPORTING (CURRENT/

TEMP)

RSENSE (GAIN) (MΩ)

FSW (kHz)TSTAT

(µs)C_SEL

0pF 200 pF

820 pF

1.78

0.956

6 CCM

Current2.1

700 800 900 2000

2.67 7.5 CCM/DCM4.02

36 CCM

6.04 7.5 CCM/DCM9.09

Ext. 6 CCM13.3 1.520.0

0.6 6

9CCM/DCM

30.9CCM

46.4671.5

CCM/DCMTemp

107 Current 1.05162 Ext. 1.5 7.5 CCM Temp 2.1 400 500 600 128



Input Voltage MonitoringVDD1 and GND1 sense points as well as J3 can be used to monitor the input supply.

Output Voltage MonitoringJ11 and J13 monitor the output voltage. These test points should not be used for loading. Use scopejack J14 to monitor the output voltage ripple on an oscilloscope.

Efficiency MeasurementThe following steps describe how to measure the regulator efficiency.1) Connect a 12V power supply to the VDD1 and GND1

banana jacks. To avoid the input voltage to drop at high load due to power losses on connection cables connect the sense lines of the power supply to VDD1 and GND1 headers.

2) Connect an external 1.8V, 0.1A current limited power supply between J12-2 and ground.

3) Connect the same power supply to J10-1 to enable the regulator.

4) Connect a load to the VOUT and GND banana jacks for better results. J8 can also be used for low currents.

5) Make sure the shunt is installed on J16 (1-2) to close the sense line.

6) Remove all the other jumpers.7) Connect a voltmeter to J11 or J13.8) Turn on the power supply.9) Measure VIN, IIN, VOUT, IOUT, VBIAS, and IBIAS.10) Calculate the efficiency as:Equation 3

( )OUT OUT

IN IN BIAS BIAS

V IV I ( V I )

×η= × + ×

Figure 1. Electrical Connections to Use the External Voltage Reference Feature

RSTAT

CVCC CIN

CBST

R_SELC_SEL

VCC VDDH

STAT

OE

AGNDPGM

GND

SENSE-

SENSE+

VX

BSTMAX38800

ROE

RFB1

RFB2

RF

CF

LOUT

COUT

VCC VDDH

VOUT

VREF

Kelvin Connection to Load



MAX38800 EV Kit Bill of Materials

ITEM

REF_

DES

DNI/

DNP

QTY

MFG P

ART #

MFG

VALU

EDE

SCRIP

TION

COMM

ENTS

1C1, C

2-

2TPS

E157M

016R0

100AV

X150

UFCA

PACIT

OR; S

MT; 73

43; TA

NTAL

UM; 15

0uF; 16

V; 20%

; TPS

; -55de

gC to

+125d

egC

2C3

-1C0

402X7

R160-

104KN

E;CL

05B104

KO5N

NNC;

GRM1

55R71C

104KA

88;C1

005X7

R1C1

04K;

CC040

2KRX

7R7B

B104;

EMK1

05B710

4KV

VENK

EL LT

D./SA

MSUN

G EL

ECTR

ONICS

/MURA

TA/TD

K/YAG

EO PH

ICOMP

/TAIYO

YU

DEN

0.1UF

CAPA

CITOR

; SMT

(0402

); CER

AMIC

CHIP;

0.1UF

; 16V;

TOL=

10%; T

G=-55

DEGC

TO +1

25 DE

GC; T

C=X7

R;

3C4

-1E

CJ-0E

B1E8

21KPA

NASO

NIC820

PFCA

PACIT

OR; S

MT (0

402); C

ERAM

IC CH

IP; 82

0PF;

25V; T

OL=1

0%; M

ODEL

=ECJ

SERIE

S; TG

=-55 D

EGC T

O +125

DE

GC; T

C=X7

R

4C5, C

6, C10,

C1

1-

4C321

6X7R

1C106

M160A

CTD

K10U

FCA

PACIT

OR; S

MT (1

206); C

ERAM

IC CH

IP; 10

UF; 16

V; TO

L=20%

; MOD

EL=C

SERIE

S; TG

=-55 D

EGC T

O +125

DEGC

; TC

=X7R

5C7, C

21, C5

4-

3EMK

107B7

105MA

TAIYO

YUDE

N1U

FCA

PACIT

OR; S

MT (0

603); C

ERAM

IC CH

IP; 1U

F; 16V

; TOL

=20%

; MOD

EL=M

SERIE

S; TG

=-55 D

EGC T

O +125

DEGC

; TC

=X7R

6C8

-1G

RM188

R71E

474KA

12MU

RATA

0.47U

FCA

PACIT

OR; S

MT (0

603); C

ERAM

IC CH

IP; 0.4

7UF;

25V; T

OL=1

0%; M

ODEL

=GRM

SERIE

S; TG

=-55 D

EGC T

O +125

DE

GC; T

C=X7

R

7C9, C

55-

2JMK1

05BBJ

475MV

-F;C1

005X5

R0J47

5M050

BCTA

IYO YU

DEN;

TDK

4.7UF

CAPA

CITOR

; SMT

(0402

); CER

AMIC

CHIP;

4.7UF

; 6.3V

; TOL

=20%

; TG=

-55 DE

GC TO

+85 D

EGC;

TC=X

5R

8C13-C

15,C1

7-C1

9, C22,

C26,

C27, C

41, C4

6, C5

0-

12C2

012X6

S0J22

6M125

AB;GR

M21B

C80J

TDK/M

URAT

A22U

FCA

PACIT

OR; S

MT (0

805); C

ERAM

IC CH

IP; 22

UF; 6.

3V; T

OL=2

0%; T

G=-55

DEGC

TO +1

05 DE

GC; T

C=X6

S

9C24

-1C0

402C1

03K3R

AC;

GRM1

55R71E

103KA

01D;

C1005

X7R1

E103K

KEME

T; MU

RATA

; TDK

0.01U

F C

APAC

ITOR;

SMT (

0402);

CERA

MIC CH

IP; 0.0

1UF;

25V; T

OL=1

0%; T

G=-55

DEGC

TO +1

25 DE

GC; T

C=X7

R;

10C2

5, C56

-2C0

402X7

R250-

153KN

E;GRM

155R7

1E153

KA6

1VE

NKEL

LTD./

MURA

TA0.0

15UF

CAPA

CITOR

; SMT

(0402

); CER

AMIC

CHIP;

0.015U

F; 25V

; TOL

=10%

; TG=

-55 DE

GC TO

+125

DEGC

; TC=

X7R

11C3

6-

1C0402

X5R6

R3-10

5KNP

;C1

005X5

R0J10

5K;

GRM1

55R60J

105KE

19;JM

K105B

J105K

VVE

NKEL

LTD./

TDK/M

URAT

A1U

FCA

PACIT

OR; S

MT (0

402); C

ERAM

IC CH

IP; 1U

F; 6.3

V; TO

L=10%

; TG=

-55 DE

GC TO

+85 D

EGC;

TC=X

5R;

12C3

7-

1C1005

X7R1

E473K

;GR

M155R

71E473

KTD

K/MUR

ATA

0.047U

FCA

PACIT

OR; S

MT (0

402); C

ERAM

IC CH

IP; 0.0

47UF;

25V; T

OL=1

0%; T

G=-55

DEGC

TO +1

25 DE

GC

13C3

9-

1TMK

105BJ

472KV

-FTA

IYO YU

DEN

4700P

FCA

PACIT

OR; S

MT (0

402); C

ERAM

IC CH

IP; 47

00PF;

25V; T

OL=1

0%; T

G=-55

DEGC

TO +8

5 DEG

C; TC

=X5R

14D1

-12

EZ15D

5MIC

RO CO

MMER

CIAL

COMP

ONEN

TS15V

DIODE

; ZNR

; THR

OUGH

HOLE

-AXIAL

LEAD

(DO-4

1); VZ

=15V

; IZ=0

.122A

15

GND1

, TP1

-TP

3, VDD

1, VO

UT-

6108-

0740-0

01EM

ERSO

N NET

WORK

PO

WER

108-07

40-001

CONN

ECTO

R; MA

LE; P

ANEL

MOUN

T; BA

NANA

JACK

; STR

AIGHT

; 1PIN

16

GND1

_HEA

DER,

GND2

, J9,

VDD1

_HEA

DER,

VX1

-5P

EC01S

AAN

SULLI

NS EL

ECTR

ONICS

CO

RPPE

C01S

AAN

CONN

ECTO

R; MA

LE; T

HROU

GH HO

LE; B

REAK

AWAY

; STR

AIGHT

; 1PIN

17

GND1

_MAX

IMPA

D,GN

D_MA

XIMP

AD, J2

, J6,

VDD1

_MAX

IMPAD

,VO

UT_M

AXIM

PAD

-6M

AXIMP

ADN/A

MAXIM

PAD

EVK K

IT PA

RTS;

MAXIM

PAD;

NO W

IRE TO

BE SO

LDER

ED ON

THE M

AXIMP

AD

18J1,

J4, J1

0-J13,

J16

-7P

EC02S

AAN

SULLI

NSPE

C02S

AAN

CONN

ECTO

R; MA

LE; T

HROU

GH HO

LE; B

REAK

AWAY

; STR

AIGHT

; 2PINS



MAX38800 EV Kit Bill of Materials (continued)

ITEM

REF_

DES

DNI/

DNP

QTY

MFG P

ART #

MFG

VALU

EDE

SCRIP

TION

COMM

ENTS

19J3,

J14

-2S

COPE

_PRO

BE_JA

CKMA

XIMSC

OPE_

PRO

BE_JA

CKEV

KIT PA

RT-SC

OPE_

PROB

E_JA

CK

20J5,

J15

-2P

EC03

DAAN

SULL

INS EL

ECTR

ONICS

CO

RP.

PEC0

3DAA

NCO

NNEC

TOR;

MALE

; THR

OUGH

HOLE

; BRE

AKAW

AY; S

TRAIG

HT TH

ROUG

H; 6P

INS; -6

5 DEG

C TO +

125 D

EGC

21J7

-1P

EC04

SAAN

SULL

INS EL

ECTR

ONICS

CO

RP.

PEC0

4SAA

NCO

NNEC

TOR;

MALE

; THR

OUGH

HOLE

; BRE

AKAW

AY; S

TRAIG

HT; 4

PINS

22J8

-1E

D120

/2DS

ON-SH

ORE T

ECHN

OLOG

Y INC

.ED

120/2

DSCO

NNEC

TOR;

FEMA

LE; T

HROU

GH HO

LE; B

LUE T

ERMI

NAL B

LOCK

; STR

AIGHT

; 2PIN

S

23L1

-1G

LMCR

4703

AAL

PS0.4

7UH

INDUC

TOR;

SMT;

LIQUA

LLOY

; 0.47

UH; T

OL=+

/-20%

; 16.2

A

24R1

-1E

RJ-2R

KF26

71X

PANA

SONIC

2.67K

RESIS

TOR;

0402

; 2.67

K OHM

; 1%;

100P

PM; 0

.10W;

THICK

FILM

25R2

, R3

-2C

RG04

02F1

0KTE

CONN

ECTIV

ITY10

KRE

SISTO

R; 04

02; 1

0K OH

M; 1%

; 100

PPM;

0.06

3W; T

HICK F

ILM

26R4

, R7,

R11,

R15,

R16

-5RC

0402

JR-07

0RL;

CR04

02-

16W-

000R

JTYA

GEO P

HYCO

MP/VE

NKEL

LT

D.0R

ESIST

OR; 0

402;

0 OHM

; 5%;

JUMP

ER; 0

.063W

; THIC

K FILM

27

R5, R

8-

2ERJ

-2GEJ

203X

PANA

SONIC

20K

RESIS

TOR;

0402

; 20K

OHM;

5%; 2

00PP

M; 0.

10W;

THICK

FILM

28

R6-

1CRC

W040

26K8

1FK

VISHA

Y DAL

E6.8

1KRE

SISTO

R; 04

02; 6

.81K O

HM; 1

%; 10

0PPM

; 0.06

3W; M

ETAL

FILM

29

R9-

1CRC

W040

22K7

4FK

VISHA

Y DAL

E2.7

4KRE

SISTO

R; 04

02; 2

.74K;

1%; 1

00PP

M; 0.

0625

W; TH

ICK FI

LM

30R1

0-

1CRC

W040

21K0

0JKVIS

HAY D

ALE

1KRE

SISTO

R; 04

02; 1

K OHM

; 5%;

100P

PM; 0

.063W

; MET

AL FI

LM

31R1

2-

1ERA

-2AEB

2801

XPA

NASO

NIC2.8

KRE

SISTO

R; 04

02; 2

.8K OH

M; 0.

1%; 2

5PPM

; 0.06

3W; M

ETAL

FILM

32R1

4-

1RCC

-0402

PW20

0RF

INTER

NATIO

NAL

MANU

FACT

URING

SERV

ICE20

0RES

ISTOR

; 040

2; 20

0 OHM

; 1%;

100P

PM; 0

.080W

; THIC

K FILM

33SU

1-SU5

-5S

TC02

SYAN

SULL

INS EL

ECTR

ONICS

CO

RP.

STC0

2SYA

NTE

ST PO

INT; JU

MPER

; STR

; TOT

AL LE

NGTH

=0.25

6IN; B

LACK

; INSU

LATIO

N=PB

T CON

TACT

=PHO

SPHO

R BRO

NZE;

COPP

ER PL

ATED

TIN O

VERA

LL

34U1

-1M

AX38

800H

CS+

MAXIM

MAX3

8800

HCS+

EVKIT

PART

-IC; V

REG;

INTEG

RATE

D; ST

EP-DO

WN SW

ITCHIN

G REG

ULAT

OR; C

SP19

35U2

-1L

P299

2AIM

5-1.8/

NOPB

TEXA

S INS

TRUM

ENTS

LP29

92AIM

5-1.8

/NOPB

IC; VR

EG; M

ICROP

OWER

250-m

A LOW

-NOISE

ULTR

ALOW

-DROP

OUT R

EGUL

ATOR

DESIG

NED F

OR US

E WITH

VE

RY LO

W-ES

R OUT

PUT C

APAC

ITOR;

SOT2

3-5

36U3

-1L

P299

2AIM

5-3.3/

NOPB

TEXA

S INS

TRUM

ENTS

LP29

92AIM

5-3.3

/NOPB

IC; VR

EG; M

ICROP

OWER

250-m

A LOW

-NOISE

ULTR

ALOW

-DROP

OUT R

EGUL

ATOR

DESIG

NED F

OR US

E WITH

VE

RY LO

W-ES

R OUT

PUT C

APAC

ITOR;

SOT2

3-5

37PC

B-

1MAX

3880

0MA

XIMPC

BPC

B:MAX

3880

0-

38

C12,

C16,

C20,

C30,

C33,

C34,

C40,

C42-C

45,

C47-C

49, C

52,

C53

DNP

0N/A

N/AOP

ENPA

CKAG

E OUT

LINE 0

805 N

ON-PO

LAR C

APAC

ITOR

39

C28,

C29

DNP

0N/A

N/AOP

ENPA

CKAG

E OUT

LINE 7

343 H

EIGHT

4.3M

M EL

ECTR

OLYT

IC CA

PACIT

OR

40

C38,

C51,

C57

DNP

0N/ A

N/AOP

ENPA

CKAG

E OUT

LINE 0

402 N

ON-PO

LAR C

APAC

ITOR

41

R13,

R17

DNP

0N/ A

N/AOP

ENPA

CKAG

E OUT

LINE 0

402 R

ESIST

OR

42C4

DNP

0C040

2C82

1K5R

AC;

GRM1

55R7

1H82

1KA0

1KE

MET/M

URAT

A82

0PF

CAPA

CITOR

; SMT

(040

2); CE

RAMI

C CHIP

; 820

PF; 5

0V; T

OL=1

0%; T

G=-55

DEGC

TO +1

25 DE

GC; T

C=X7

R(Al

terna

te pa

rt for

C4)

43L1

DNP

0

7443

7346

0047

WURT

H ELE

CTRO

NICS I

NC0.4

7UH

INDUC

TOR;

SMT;

WIRE

WOUN

D CHIP

; 0.47

UH; T

OL=+

/-20%

; 11.5

A(Al

terna

te pa

rt for

L1)

TOTA

88

NOTE

: DNI-

-> DO

NOT I

NSTA

LL(PA

CKOU

T) ; D

NP-->

DO NO

T PRO

CURE



MAX38800 EV Kit Schematic12

V SU

PPLY

SENS

E

SENS

E

SENS

E

SENS

E

SENS

E

SENS

E

MAX

3880

0HCS

+

VCC

108-

0740

-001

PEC0

2SAA

N

0.04

7UF

4700

PFG

ND

PEC0

2SAA

N

22UF

GND

OPE

N

SCO

PE_P

ROBE

_JAC

K

108-

0740

-001

GND

1PE

C01S

AAN

108-

0740

-001

150U

F

VOUT

PEC0

2SAA

N

0.1U

F

3V3

22UF

VOUT

SCO

PE_P

ROBE

_JAC

K

PEC0

1SAA

N

108-

0740

-001

VDDH

VDD1

10K

22UF

OPE

N

PEC0

3DAA

N

OPE

N0

0

VOUT

-B

0.01

UF

6.81

K

ED12

0/2D

S

VOUT

22UF

22UF

VOUT

OPE

N

OPE

N

OPE

N

22UF

OPE

N

OPE

N

OPE

N

OPE

N

22UF

OPE

N22

UF

OPE

N

OPE

N

22UF

OPE

N

OPE

NO

PEN

22UF

OPE

N

22UF

OPE

N

22UF

OPE

N

PGM

OE

10K

0

OPE

N

0.47

UF

PEC0

3DAA

N

3V3

PEC0

4SAA

N

1UF

1K

0

LP29

92AI

M5-

1.8/

NOPB

PEC0

2SAA

N12

VA

20K

1V8

PEC0

2SAA

N

1V8

0

PEC0

2SAA

N

1UF

12VA

VDDH

200

1V8

4.7U

F

12VB

OPE

N

2.74

K

LP29

92AI

M5-

3.3/

NOPB

2.8K

VCC

1UF

PEC0

2SAA

N

20K

0.01

5UF

10UF

OPE

N

0.47

UH

PEC0

1SAA

N

GND

1

PEC0

1SAA

NVD

D1

10UF

15V

150U

F10

UF

1UF

820P

F

OPE

N

PEC0

1SAA

N

10UF

VOUT

-A

0.01

5UF

4.7U

F

2.67

K

U1

R7

C39

C19

C28

R11

VOUT

GND

1

C3

R5

C46

GND

2

C13

C33

R17

J14

J11

R4

J13

C24

J8

C53

C45

C12

C34

C47

C40

C48

C41

C20

C14

C22

C15

C49

C42

C50

C52

C43

C44

C26

C16

C27

C30

C17

C18

C29

J1

J15

J10

C51

L1

R8

R2R3

C25

J12

U2

C56

U3

C57

R15

J16

C54

R14

J7

C8

C36

C7C5

J4

R13

C21

C9

R6

J5

R9

R12

R16

C38

C37

J3C6

VDD1

D1C1

C11

C2

VX1

C4

J9

C10

R10

C55

R1

PGM

OE

OE

PGM

STAT

PGM

STAT

A4 B1C2C1B4

1C3

1

AC

A2

2

122

1

21

1

5

E1

2

E31

12

4

2

31

4

2

3151

2

23

4 6

1 2 3 4

E2

E4B3 B2 A1

D3 D4

5

C4

2D1 D2

GNDVDDH

SENS

E+

STAT

GNDGNDGND

OE

SENS

E-

AGND

PGM

VDDH

VCC

BST

VXVXVXVX

VDDH

+

+

651 3

42

651 3

42

BPVOUT

GNDO

N/O

FFVIN

32

1BPVO

UT

GNDO

N/O

FFVIN

32

1

+

+



MAX38800 EV Kit—Top Silkscreen

1.0’’

MAX38800 EV Kit PCB Layout Diagrams



MAX38800 EV Kit—Top View

1.0’’

MAX38800 EV Kit PCB Layout Diagrams (continued)



MAX38800 EV Kit—Second Layer

1.0’’




MAX38800 EV Kit—Third Layer


1.0’’



MAX38800 EV Kit—Bottom View


1.0’’



MAX38800 EV Kit—Bottom Silkscreen


1.0’’



#Denotes an RoHS-compliant device

PART TYPE

MAX38800EVKIT# EV Kit

Ordering Information

Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.

Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2018 Maxim Integrated Products, Inc. 15


REVISIONNUMBER

REVISIONDATE DESCRIPTION PAGES

CHANGED

0 8/17 Initial release —

1 5/18 Updated Bill of Materials

Revision History

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

max38800 evaluation kit - evaluates: max38800 · delivery for precision outputs that demand fast...

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