MAX1688EVKIT Maxim Integrated, MAX1688EVKIT Datasheet

MAX1688EVKIT

Manufacturer Part Number

MAX1688EVKIT

Description

Power Management IC Development Tools Evaluation Kit for the MAX1687 MAX1688

Manufacturer

Maxim Integrated

Series

MAX1687, MAX1688r

Datasheet

1.MAX1688EVKIT.pdf (4 pages)

Specifications of MAX1688EVKIT

Output Voltage

6 V

Output Current

2.5 A

Current page: 1 of 4
Download datasheet (86Kb)

The MAX1688 evaluation kit (EV kit) is a boost switching

regulator for one Li-Ion cell or three N iCd/N iMH cells in

battery-powered systems. The EV kit accepts a positive

input between 2.7V and 6V and converts it to a 5V out

put. It can easily deliver the current burst required for

cell-phone power amplifier systems. The MAX1688

reduces battery surge current by slowly charging a

reservoir capacitor, which supplies the necessary peak

energy for the current burst. As a result, the peak battery

input current is limited, thereby minimizing the battery

voltage sag and transient dips. The EV kit operates at

600kHz, allowing the use of small external components.

The MAX1688 EV kit provides low quiescent current

and high efficiency for maximum battery life. An internal

synchronous rectifier is used to provide over 90% con-

version efficiency. This EV kit is a fully assembled and

tested surface-mount circuit board. The MAX1688 EV

kit can also be used to evaluate the MAX1687.

19-1426; Rev 0; 2/99

* For low-profile applications, use Sprague tantalum

595108X06R3R2.

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

DESIGNATION

AVX

Coiltronics

Dale-Vishay

Sanyo

Sprague

Sumida

C3, C4

SUPPLIER

R2, R3

None

QTY

________________________________________________________________ Maxim Integrated Products

47µF, 16V tantalum capacitor

AVX TPSC476M016R0350 or

Sprague 595D476X0016C2T

0.1µF ceramic capacitor

1000µF, 6.3V electrolytic capacitors*

Sanyo 6CV1000AX

Not installed

10µH inductor

Sumida CLS62B-100 or

Coiltronics TP2-100

60.4kΩ 1% resistor

20.0kΩ 1% resistors

1MΩ 5% resistor

Not installed (for MAX1687 only)

MAX1688EUE

MAX1688 PC board

MAX1688 data sheet

Component Suppliers

803-946-0690

561-241-7876

402-564-3131

619-661-6835

603-224-1961

708-956-0666

General Description

PHONE

Component List

DESCRIPTION

803-626-3123

561-241-9339

402-563-6418

619-661-1055

603-224-1430

708-956-0702

FAX

MAX1688 Evaluation Kit

The MAX1688 EV kit is fully assembled and tested.

Follow these steps to verify board operation.

turn on the power supply until all connections are

completed.

1) Connect a 3V supply voltage to the VIN pad.

2) Connect a voltmeter and load, if any, to the VOUT

3) Turn on the power supply.

4) Synchronize the GSM pulse load to the ON signal by

5) Verify the output voltage is 5V. For other output volt-

†

Note: To evaluate the MAX1687, order a MAX1687EUE sample

with the MAX1688 EV kit.

MAX1688EVKIT

2.7V to 6V Input Voltage Range

5V Output Voltage

Less than 500mV Output Voltage Droop with

1.42A Burst Current

90% Efficiency

Output Disconnected from Input during Shutdown

600kHz Switching Frequency

Internal MOSFET and Synchronous Rectifier

3µA IC Shutdown Current

Surface-Mount Components (TSSOP Package)

Fully Assembled and Tested

Connect the supply ground to the GND pad.

pad.

applying the logic signal that controls the power

amplifier to the ON / OFF pad. ON is low when GSM

load is applied.

ages, refer to the Adjusting the Output Voltage sec-

tion in the MAX1687/MAX1688 data sheet for instruc-

tions on selecting the feedback resistors.

PART

TEMP. RANGE

Ordering Information

0°C to +70°C

Quick Start

16 TSSOP

IC PACKAGE

Features

Do not

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MAX1688EVKIT Summary of contents

Page 1

... Internal MOSFET and Synchronous Rectifier 3µA IC Shutdown Current Surface-Mount Components (TSSOP Package) Fully Assembled and Tested PART MAX1688EVKIT Note: To evaluate the MAX1687, order a MAX1687EUE sample with the MAX1688 EV kit. The MAX1688 EV kit is fully assembled and tested. Follow these steps to verify board operation. ...

Page 2

MAX1688 Evaluation Kit Detailed Description The MAX1688 EV kit is designed for supplying short-dura - tion, high-current bursts for GSM cell phone applications. It combines a boost switching regulator, an N-channel power MOSFET, a P-channel synchronous rectifier, and a preci- ...

Page 3

Figure 2. MAX1688 EV Kit Component Placement Guide— Component Side 1.0" Figure 3. MAX1688 EV Kit PC Board Layout—Component Side _______________________________________________________________________________________ MAX1688 Evaluation Kit 1.0" 1.0" Figure 4. MAX1688 EV Kit PC Board Layout—Solder Side 3 ...

Page 4

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product circu implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 4 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 1999 Maxim Integrated Products ...

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