General Description

The MAX1573 evaluation kit (EV kit) is a fully assembled

and tested surface-mount circuit board. The EV kit con-

tains the MAX1573, a white LED driver with a high-effi-

ciency charge pump. The EV kit accepts a 2.7V to 5.5V

input voltage and drives up to 4 white LEDs with regu-

lated constant current for uniform intensity. The

MAX1573 runs at 1MHz fixed frequency, allowing tiny

external components. An EV kit is available for both the

UCSP and the TQFN packages.

Features

o Proprietary Adaptive 1x/1.5x Modes

o 2% LED Current Matching

o 28mA/LED Drive Capability

o Eliminates Ballast Resistor

o Low 0.1µA Shutdown Current

o 2.7V to 5.5V Input Voltage Range

o Tiny 2.1 x 2.1 x 0.6mm UCSP Package

o Surface-Mount Components

o Fully Assembled and Tested

MAX1573 Evaluation Kit

________________________________________________________________ Maxim Integrated Products

1

19-2894; Rev 1; 4/04

Component List

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.

Ordering Information

Quick Start

Recommended Equipment

For evaluation of either EV kit:

• Variable-output power supply capable of supplying

up to +5.5V at 300mA

Procedure

The MAX1573 EV kit is fully assembled and tested.

Perform the following steps to verify board operation.

Do not turn on the power supply until all connec-

tions are completed:

1) Verify that shunts are across pins 1 and 2 of JU1

(EN1) and JU2 (EN2).

2) Preset the power supply to 2.7V and turn off.

3) Connect the positive lead of the power supply to the

VIN pad on the EV kit board. Connect the ground

lead of the power supply to the GND pad directly

below the VIN pad.

4) Turn on the power supply.

5) Verify that all 4 white LEDs are on with uniform

intensity.

PART

TEMP RANGE

IC PACKAGE

MAX1573EVKIT

0°C to +70°C

14 UCSP 4 x 4

MAX1573TQFNEVKIT

0°C to +70°C

16 TQFN

DESIGNATION

QTY

DESCRIPTION

C1–C4

4

1µF ±10%, 6.3V X5R ceramic

capacitors (0603)

TDK C1608X5R0J105K

D1–D4

4

Surface-mount white LEDs

Nichia NSCW215T

JU1, JU2

2

3-pin headers

JU3

1

Not installed

R1

1

7.5k

Ω ±1% resistor (0603)

U1

1

MAX1573EBE or MAX1573ETE

None

2

Shunts

None

1

MAX1573EVKIT PC board

UCSP is a trademark of Maxim Integrated Products, Inc.

Component Suppliers

Note: Please indicate that you are using the MAX1573 when contacting these suppliers.

SUPPLIER

COMPONENT

PHONE

WEBSITE

Nichia

LEDs

717-285-2323

www.nichia.com

Panasonic

Resistors

714-373-7366

www.maco.panasonic.co.jp

Taiyo Yuden

Capacitors

408-573-4150

www.t-yuden.com

TDK

Capacitors

888-835-6646

www.component.tdk.com