MAX17112 Maxim Integrated Products, MAX17112 Datasheet

MAX17112

Manufacturer Part Number

MAX17112

Description

DC-DC Converter

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX17112.pdf (12 pages)

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The MAX17112 is a high-performance, step-up, DC-DC

converter that provides a regulated supply voltage for

active-matrix thin-film transistor (TFT) liquid-crystal dis-

plays (LCDs). The MAX17112 incorporates current-

mode, fixed-frequency (1MHz), pulse-width modulation

(PWM) circuitry with a built-in, n-channel power MOSFET

to achieve high efficiency and fast-transient response.

The input overvoltage protection (OVP) function pre-

vents damage to the MAX17112 from an input surge

voltage (up to 24V).

The high switching frequency (1MHz) allows the use of

ultra-small inductors and low-ESR ceramic capacitors.

The current-mode architecture provides fast-transient

response to pulsed loads. A compensation pin (COMP)

gives users flexibility in adjusting loop dynamics. The

internal MOSFET can generate output voltages up to

20V from an input voltage between 2.6V and 5.5V.

Soft-start slowly ramps the input current and is pro-

grammable with an external capacitor. The MAX17112

is available in a 10-pin TDFN package.

19-4393; Rev 0; 12/08

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.

2.6V TO 5.5V

High-Performance, Step-Up, DC-DC Converter

Notebook Computer Displays

LCD Monitor Panels

Simplified Operating Circuit

________________________________________________________________ Maxim Integrated Products

SHDN

General Description

MAX17112

GND

COMP

Applications

GND

OUT

o Input Overvoltage Protection

o Adjustable Output from V

o 2.6V to 5.5V Input Supply Range

o Input Supply Undervoltage Lockout

o 1MHz Fixed Switching Frequency

o Programmable Soft-Start

o Small 10-Pin, TDFN Package

o Thermal-Overload Protection

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

* EP = Exposed pad.

MAX17112ETB+

TOP VIEW

PART

*EXPOSED PAD

COMP

GND

Ordering Information

-40°C to +85°C

TEMP RANGE

3mm × 3mm

MAX17112

TDFN

Pin Configuration

to 20V

*EP

PIN-PACKAGE

Features

10 TDFN-EP*

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