MAX15041 Maxim Integrated Products, MAX15041 Datasheet

MAX15041

Manufacturer Part Number

MAX15041

Description

Step-Down DC-DC Regulator

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX15041.pdf (16 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MAX15041ETE+T

Manufacturer:

MAXIM

Quantity:

990

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The MAX15041 low-cost, synchronous DC-DC convert-

er with internal switches delivers an output current up to

3A. The MAX15041 operates from an input voltage of

4.5V to 28V and provides an adjustable output voltage

from 0.6V to 90% of V

The MAX15041 is ideal for distributed power systems,

preregulation, set-top boxes, television, and other con-

sumer applications.

The MAX15041 features a peak-current-mode PWM con-

troller with internally fixed 350kHz switching frequency

and a 90% maximum duty cycle. The current-mode con-

trol architecture simplifies compensation design, and

ensures a cycle-by-cycle current limit and fast response

to line and load transients. A high-gain transconductance

error amplifier allows flexibility in setting the external com-

pensation by using a type III compensation scheme,

thereby allowing the use of all ceramic capacitors.

This synchronous buck regulator features internal

MOSFETs that provide better efficiency than asynchro-

nous solutions, while simplifying the design relative to

discrete controller solutions. In addition to simplifying

the design, the integrated MOSFETs minimize EMI,

reduce board space, and provide higher reliability by

minimizing the number of external components.

The MAX15041 also features thermal shutdown and

overcurrent protection (high-side sourcing and low-side

sinking), and an internal 5V LDO with undervoltage

lockout. In addition, this device ensures safe startup

when powering into a prebiased output.

Other features include an externally adjustable soft-start

that gradually ramps up the output voltage and reduces

inrush current. Independent enable control and power-

good signals allow for flexible power sequencing.

The MAX15041 is available in a space-saving, high-

power, 3mm x 3mm, 16-pin TQFN-EP package and is

fully specified from -40°C to +85°C.

19-4815; Rev 0; 7/09

Pin Configuration appears at end of data sheet.

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.

Step-Down DC-DC Regulator with Internal Switches

Distributed Power Systems

Wall Adapters

Preregulators

Set-Top Boxes

Televisions

xDSL Modems

Consumer Products

Low-Cost, 3A, 4.5V to 28V Input, 350kHz, PWM

________________________________________________________________ Maxim Integrated Products

General Description

, set with two external resistors.

Applications

♦ Up to 3A of Continuous Output Current

♦ ±1% Output Accuracy Over Temperature

♦ 4.5V to 28V Input Voltage Range

♦ Adjustable Output Voltage Range from 0.606V to

♦ Internal 170mΩ R

♦ Fixed 350kHz Switching Frequency

♦ Up to 93% Efficiency

♦ Cycle-By-Cycle Overcurrent Protection

♦ Programmable Soft-Start

♦ Stable with Low-ESR Ceramic Output Capacitors

♦ Safe Startup into Prebiased Output

♦ Enable Input and Power-Good Output

♦ Fully Protected Against Overcurrent and

♦ V

♦ Space-Saving, Thermally Enhanced, 3mm x 3mm

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

* EP = Exposed pad.

MAX15041ETE+

0.9 x V

Overtemperature

Package

INPUT

12V

DS-ON

PGOOD

PART

LDO Undervoltage Lockout

Low-Side Power Switches

Typical Operating Circuit

TEMP RANGE

-40°C to +85°C 16 TQFN-EP*

PGOOD

DS-ON

MAX15041

Ordering Information

SGND

COMP

High-Side and 105mΩ

PGND

BST

www.DataSheet4U.com

PACKAGE

PIN-

Features

1.8V AT 3A

OUTPUT

MARK

TOP

AGV

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