MAX5089 Maxim Integrated Products, MAX5089 Datasheet

MAX5089

Manufacturer Part Number

MAX5089

Description

2.2MHz - 2A Buck Converters with an Integrated High-Side Switch

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX5089.pdf (24 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MAX5089ATE+

Manufacturer:

Maxim Integrated Products

Quantity:

135

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The MAX5088/MAX5089 high-frequency, DC-DC con-

verters with an integrated n-channel power MOSFET

provide up to 2A of load current. The MAX5088

includes an internal power MOSFET to enable the

design of a nonsynchronous buck topology power sup-

ply. The MAX5089 is for the design of a synchronous

buck topology power supply. These devices operate

from a 4.5V to 5.5V or 5.5V to 23V input voltage and a

200kHz to 2.2MHz resistor-programmable switching

frequency. The voltage-mode architecture with a peak

switch current-limit scheme provides stable operation

up to a 2.2MHz switching frequency. The MAX5088

includes a clock output for driving a second DC-DC

converter 180° out-of-phase and a power-on-reset

(RESET) output. The MAX5089 includes a power-good

output and a synchronous rectifier driver to drive an

external low-side MOSFET in the buck converter config-

uration for high efficiency.

The MAX5088/MAX5089 protect against overcurrent

conditions by utilizing a peak current limit as well as

overtemperature shutdown providing a very reliable

and compact power source for point-of-load regulation

applications. Additional features include synchroniza-

tion, internal digital soft-start, and an enable input. The

MAX5088/MAX5089 are available in a thermally

enhanced, space-saving 16-pin TQFN (5mm x 5mm)

package and operate over the -40°C to +125°C tem-

perature range.

19-3944; Rev 1; 5/06

Pin Configurations continued at end of data sheet.

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.

MAX5088ATE

MAX5089ATE

PART

xDSL Modem Power Supply

Automotive Radio Power Supply

Servers and Networks

IP Phones/WLAN Access Points

CONFIGURATION

Synchronous Buck

________________________________________________________________ Maxim Integrated Products

Nonsynchronous

Buck

General Description

2.2MHz, 2A Buck Converters with an

Selector Guide

Applications

Synchronous FET

PGOOD Output,

RESET Output,

Clock Output

FEATURES

Driver

Integrated High-Side Switch

♦ 4.5V to 5.5V or 5.5V to 23V Input Voltage Range

♦ Output Voltage Adjustable Down to 0.6V

♦ 2A Output Current

♦ Synchronous Rectifier Driver Output (MAX5089)

♦ Resistor-Programmable Switching Frequency

♦ External Synchronization and Enable (On/Off)

♦ Clock Output for Driving Second Converter 180°

♦ Integrated 150mΩ High-Side n-Channel Power

♦ Power-On Reset Output (MAX5088)/Power-Good

♦ Short-Circuit Protection

♦ Thermal-Shutdown Protection

♦ Thermally Enhanced 16-Pin TQFN Package

+Denotes lead-free package.

MAX5088ATE+

MAX5089ATE+

for Higher Efficiency

from 200kHz to 2.2MHz

Inputs

Out-Of-Phase (MAX5089)

MOSFET

Output (MAX5089)

Dissipates 2.7W

TOP VIEW

*EXPOSED PAD.

PART

BST/VDD

RESET

SYNC

-40°C to +125°C

TEMP RANGE

Ordering Information

EP*

5mm x 5mm

THIN QFN

Pin Configurations

MAX5088

PIN-

PACKAGE

16 TQFN

www.DataSheet4U.com

Features

V+

BYPASS

OSC

T1655-2

CODE

PKG

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