MAX1644EVKIT Maxim Integrated, MAX1644EVKIT Datasheet

MAX1644EVKIT

Manufacturer Part Number

MAX1644EVKIT

Description

Power Management IC Development Tools Evaluation Kit for the MAX1644

Manufacturer

Maxim Integrated

Series

MAX1644r

Datasheet

1.MAX1644EVKIT.pdf (4 pages)

Specifications of MAX1644EVKIT

Input Voltage

3 V to 5.5 V

Output Voltage

1.1 V to 3.3 V

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Download datasheet (89Kb)

The MAX1644 evaluation kit (EV kit) provides a 1.5V

output voltage from a +3V to +5.5V input source. It

delivers up to 2A output current with 92% (max) effi-

ciency. The MAX1644 is a step-down switching regula-

tor with an internal synchronous rectifier to reduce the

number of external components. It features a resistor-

programmable fixed off-time as well as current-mode

operation for superior load- and line-transient response.

The MAX1644 EV kit can also be used to evaluate other

output voltages by changing the feedback resistors (R1

and R2) or by using the preset +3.3V or +2.5V settings.

19-1457; Rev 1; 7/00

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

DESIGNATION

C1, C8, C9

None

JU1

QTY

________________________________________________________________ Maxim Integrated Products

10µF, 6.3V, X5R ceramic

capacitors

Taiyo Yuden JMK316BJ106ML or

Murata GRM42-6X5R106K6.3

100µF, 6.3V, low-ESR capacitor

Sanyo 6TPC100M (POSCAP),

AVX TPSD107M010R0080 (tantalum),

Sprague 594D107X0010C2T

(tantalum)

2.2µF, 10V, X5R ceramic capacitor

Taiyo Yuden LMK212BJ225MG

0.01µF, 50V, X7R ceramic capacitor

470pF, 50V, X7R ceramic capacitor

1µF, 10V, X7R ceramic capacitor

Taiyo Yuden LMK212B105KG or

Murata GRM40X7R105K010

Not installed

2-pin header

6.0µH, 2.25A inductor

Sumida CDRH6D28-6R0NC

49.9kΩ ±1% resistor

18.2kΩ ±1% resistor

10Ω ±5% resistor

1MΩ ±5% resistor

270kΩ ±5% resistor

Maxim MAX1644EAE

Shunt

General Description

Component List

DESCRIPTION

MAX1644 Evaluation Kit

o +3V to +5.5V Input Voltage Range

o Output Voltage Preset to 1.5V

o 2A Output Current

o 92% Efficiency

o 300kHz Switching Frequency

o Synchronous Rectification for Improved

o No External Schottky Diode Required

o Less than 1µA typical IC Shutdown Current

o Surface-Mount Construction

o Fully Assembled and Tested

The MAX1644 EV kit is a fully assembled and tested

surface-mount board. Follow the steps below to verify

board operation. Do not turn on the power supply

until all connections are completed.

1) Connect a +3V to +5.5V supply to the pads marked

2) Connect a voltmeter and load (if any) to VOUT and

3) Verify that the shunt is on JU1.

4) Turn on the power and verify that the output voltage

5) Refer to Output Voltage Selection to modify the

_________________________Quick Start

MAX1644EVKIT

AVX

Murata

Sanyo

Sprague

Sumida

Taiyo Yuden

Efficiency

VIN and GND.

GND.

is +1.5V.

board for a different output voltage.

SUPPLIER

PART

2.5V or 3.3V Selectable

1.1V to V

Adjustable

Component Suppliers

TEMP. RANGE

0°C to +70°C

803-946-0690

814-237-1431

619-661-6835

603-224-1961

847-956-0666

408-573-4150

Ordering Information

PHONE

803-626-3123

814-238-0490

619-661-1055

603-224-1430

847-956-0702

408-573-4159

IC PACKAGE

16 SSOP

Features

FAX

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