Maxim Integrated │ 3

www.maximintegrated.com

Evaluates: MAX40203

MAX40203 Evaluation Kit

Detailed Description of Hardware

The MAX40203 EV kit provides a proven design to evaluate

the MAX40203 5-pin SOT23, space-saving, “ideal-diode.”

The device blocks reverse voltages and passes current

when forward-biased, just as a normal diode would. The

device, when forward-biased and enabled, conducts with

as little as 100mV of voltage drop while carrying currents

as high as 500mA. At higher currents (up to 1A), the

voltage drop increases linearly. The MAX40203 protects

itself, and any down-stream circuitry, from overtemperature

conditions.

When disabled (EN = low), the MAX40203 can block

voltages up to 6V in either direction, making it suitable

for most low-voltage portable electronic devices. The low

(300nA, typ.) supply current is independent of the load

current. The MAX40203 operates from supplies within the

range of 1.2V and 5.5V.

Theory of Operation

The two “ideal-diode” devices may be used independently

or together. The PCB circuit mimics a typical wall adaptor/

They are connected to the common output, where the

load is connected.

When used independently or together, enable inputs EN1

and EN2 turn the device on or off. The device that is

turned on conducts current to the load. The device that

is turned off does not conduct current to the load from its

#Denotes RoHS compliant.

MAX40203 EV Kit Bill of Materials

ITEM

REF_DES

DNI/

DNP QTY MFG PART #

MFG

VALUE

DESCRIPTION

1

C1, C2, C6

-

3

C1206C105K3RAC;ECJ-

3YB1E105K

KEMET;PANA

SONIC

1UF

CAPACITOR; SMT (1206); CERAMIC CHIP; 1UF; 25V; TOL=10%; MODEL=X7R; TG=-

55 DEGC TO +125 DEGC; TC=+/-

2

C3, C4

-

2 C1608X7R1E104K080AA

TDK

0.1UF

CAPACITOR; SMT (0603); CERAMIC CHIP; 0.1UF; 25V; TOL=10%; MODEL=C

SERIES; TG=-55 DEGC TO +125 DEGC; TC=X7R

3

C5

-

1 C2012X7T2E104K125

TDK

0.1UF

CAPACITOR; SMT (0805); CERAMIC CHIP; 0.1UF; 250V; TOL=10%; MODEL=C

SERIES; TG=-55 DEGC TO +125 DEGC; TC=X7T

4

EN1, EN2, OUT, OUT1, OUT2,

TP5, TP6, VDD1, VDD2

-

9

5005 KEYSTONE

N/A

TEST POINT; PIN DIA=0.125IN; TOTAL LENGTH=0.35IN; BOARD HOLE=0.063IN;

RED; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;

5

GND, TP1-TP4, TP9, TP10

-

7

5006 KEYSTONE

N/A

TEST POINT; PIN DIA=0.125IN; TOTAL LENGTH=0.35IN; BOARD HOLE=0.063IN;

BLACK; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;

6

J1, J2

-

2 PBC03SAAN

SULLINS

PBC03SAAN

CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT; 3PINS; -65 DEGC

TO +125 DEGC

7

J3, J4

-

2 PBC02SAAN

SULLINS

ELECTRONIC

S CORP.

PBC02SAAN

CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT; 2PINS

8

U1, U2

-

2 MAX40203AUK+

MAXIM

MAX40203AUK

+

EVKIT PART - IC; ULTRA-TINY NANOPOWER; 1A IDEAL DIODE WITH ULTRA-LOW

VOLTAGE DROP; PACKAGE OUTLINE DRAWING NUMBER: 21-0057; PACKAGE

LAND PATTERN: 90-0174; PACKAGE CODE: U5+2; SOT23-5

9

PCB

-

1 MAX40203

MAXIM

PCB

PCB:MAX40203

TOTAL

29

NOTE: DNI--> DO NOT INSTALL(PACKOUT) ; DNP--> DO NOT PROCURE

PART

TYPE

MAX40203EVKIT#

EV Kit

Ordering Information