General Description

The MAX5035 evaluation kit (EV kit) is a fully assembled

and tested surface-mount printed circuit board (PCB)

that contains a step-down DC-DC switching-regulator

circuit. The circuit utilizes a MAX5035 adjustable con-

verter configured for a 5V output and provides up to 1A

of current. The converter operates from a wide input

range of 8V to 76V.

The MAX5035 MAXPower IC features a built-in high-

side switch and an automatic pulse-skipping mode

operation. The MAX5035 EV kit demonstrates low qui-

escent current and high efficiency up to 92%. The

MAX5035 MAXPower IC switches at 125kHz.

Warning: The MAX5035 EV kit is designed to operate

with high voltages. Dangerous voltages are present on

this EV kit and on equipment connected to it. Users

who power up this EV kit or power the sources connect-

ed to it must be careful to follow appropriate safety pro-

cedures when working with high-voltage electrical

equipment.

Under severe fault or failure conditions, this EV kit may

dissipate large amounts of power, which could result in

the mechanical ejection of a component or of compo-

nent debris at high velocity. Operate this EV kit with

care to avoid possible personal injury.

Features

♦ 8V to 76V Input Voltage Range

♦ 5V Output at Up to 1A

♦ 92% Efficiency

♦ Adjustable Output Voltage Through Resistive

Voltage-Divider

♦ No Load Quiescent Current:

♦ 125kHz Switching Frequency

♦ Automatic Pulse-Skipping Mode

♦ Fully Assembled and Tested

MAX5035 Evaluation Kit

________________________________________________________________ Maxim Integrated Products

1

19-3076; Rev 1; 1/07

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

PART

TEMP RANGE

IC-PACKAGE

MAX5035EVKIT

0°C to +70°C

8 SO

DESIGNATION QTY

DESCRIPTION

C1

1

68µF ±20%, 100V electrolytic

capacitor (12.5 x 13.5)

Panasonic EEVFK2A680Q

C2

1

68µF ±20%, 10V tantalum capacitor (C)

AVX TPSD686M010R0100 (0.100 ESR)

or

Vishay 594D686X0010C2T (0.1 ESR)

C3, C4

2

0.1µF ±10%, 50V X7R ceramic

capacitors (0603)

TDK C1608X7R1H104K

C5

0

Not installed, capacitor (0805)

C6

1

0.2µF ±10%, 100V X7R ceramic

capacitor (1206)

AVX 12061C224KAZ

DESIGNATION QTY

DESCRIPTION

D1

1

80V, 5A Schottky diode (D0-204AR)

International Rectifier 50SQ080

L1

1

100µH, 1.8A inductor

Coilcraft, Inc. DO5022P-104

R1

1

41.2k

Ω ±1% resistor (0805)

R2

1

13.3k

Ω ±1% resistor (0805)

R3

1

130k

Ω ±1% resistor (0805)

R4

0

Not installed, resistor (0805)

R5

1

45.3k

Ω ±1% resistor (0603)

U1

1

MAX5035DUSA (8-pin SO)

JU1

1

3-pin header

—1

Shunt (JU1)

—1

PCB: MAX5035 evaluation kit