MAX5035AASA/V+ MAXIM [Maxim Integrated Products], MAX5035AASA/V+ Datasheet

MAX5035AASA/V+

Manufacturer Part Number

MAX5035AASA/V+

Description

1A, 76V, High-Efficiency MAXPower Step-Down DC-DC Converter

Manufacturer

MAXIM [Maxim Integrated Products]

Datasheet

1.MAX5035AASAV.pdf (17 pages)

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The MAX5035 easy-to-use, high-efficiency, high-volt-

age, step-down DC-DC converter operates from an

input voltage up to 76V and consumes only 270µA qui-

escent current at no load. This pulse-width modulated

(PWM) converter operates at a fixed 125kHz switching

frequency at heavy loads, and automatically switches

to pulse-skipping mode to provide low quiescent cur-

rent and high efficiency at light loads. The MAX5035

includes internal frequency compensation simplifying

circuit implementation. The device uses an internal low-

on-resistance, high-voltage, DMOS transistor to obtain

high efficiency and reduce overall system cost. This

device includes undervoltage lockout, cycle-by-cycle

current limit, hiccup mode output short-circuit protec-

tion, and thermal shutdown.

The MAX5035 delivers up to 1A output current. The out-

put current may be limited by the maximum power dis-

sipation capability of the package. External shutdown is

included, featuring 10µA (typ) shutdown current. The

MAX5035A/B/C versions have fixed output voltages of

3.3V, 5V, and 12V, respectively, while the MAX5035D

features an adjustable output voltage from 1.25V to

13.2V.

The MAX5035 is available in space-saving 8-pin SO

and 8-pin plastic DIP packages and operates over the

automotive (-40°C to +125°C) temperature range.

19-2988; Rev 3; 5/09

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

7.5V TO 76V

OFF

Automotive

Consumer Electronics

Industrial

Distributed Power

68μF

Typical Operating Circuit

ON/OFF

________________________________________________________________ Maxim Integrated Products

SGND

MAX5035

General Description

GND

BST

1A, 76V, High-Efficiency MAXPower

0.1μF

Applications

50SQ100

100μH

Step-Down DC-DC Converter

68μF

OUT

♦ Wide 7.5V to 76V Input Voltage Range

♦ Fixed (3.3V, 5V, 12V) and Adjustable

♦ 1A Output Current

♦ Efficiency Up to 94%

♦ Internal 0.4Ω High-Side DMOS FET

♦ 270µA Quiescent Current at No Load, 10µA

♦ Internal Frequency Compensation

♦ Fixed 125kHz Switching Frequency

♦ Thermal Shutdown and Short-Circuit Current

♦ 8-Pin SO and PDIP Packages

+ Denotes lead(Pb)-free/RoHS-compliant package.

Ordering Information continued at end of data sheet.

MAX5035AUSA

MAX5035AUPA

MAX5035AASA

MAX5035BUSA

MAX5035BUPA

MAX5035BASA

M AX 5035AAS A/V + -40°C to +125°C 8 SO

M AX 5035BAS A/V + -40°C to +125°C 8 SO

(1.25V to 13.2V) Versions

Shutdown Current

Limit

TOP VIEW

PART

SGND

BST

-40°C to +125°C 8 SO

TEMP RANGE

0°C to +85°C

Ordering Information

MAX5035

SO/PDIP

Pin Configuration

PIN-

PACKAGE

8 SO

8 PDIP

8 SO

8 PDIP

GND

ON/OFF

Features

VO LTA GE

OU TPU T

3.3

5.0

( V)

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