MAX17075 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

View to exact match

MAX17075

Boost Regulator with Integrated Charge Pumps, Switch Control, and High-Current Op Amp

Maxim Integrated 

EVALUATION KIT AVAILABLE

MAX17075

Boost Regulator with Integrated Charge Pumps,

Switch Control, and High-Current Op Amp

General Description

The MAX17075 includes a high-voltage boost regulator,

one high-current operational amplifier, two regulated

charge pumps, and one MLG block for gate-driver

supply modulation.

The step-up DC-DC converter is a 1.2MHz current-

mode boost regulator with a built-in power MOSFET. It

provides fast load-transient response to pulsed loads

while producing efficiencies over 85%. The built-in

160mΩ (typ) power MOSFET allows output voltages as

high as 18V boosted from inputs ranging from 2.5V to

5.5V. A built-in 7-bit digital soft-start function controls

startup inrush currents.

The gate-on and gate-off charge pumps provide regu-

lated TFT gate-on and gate-off supplies. Both output

voltages can be adjusted with external resistive

voltage-dividers.

The operational amplifier, typically used to drive the

LCD backplane (VCOM), features high-output short-cir-

cuit current (±500mA), fast slew-rate (45V/µs), wide

bandwidth (20MHz), and rail-to-rail outputs.

The MAX17075 is available in a 24-pin thin QFN pack-

age with 0.5mm lead spacing. The package is a square

(4mm x 4mm) with a maximum thickness of 0.8mm for

ultra-thin LCD design. It operates over the -40°C to

+105°C temperature range.

Applications

Notebook Computer Displays

LCD Monitor Panels

LCD TVs

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX17075ETG+

-40°C to +85°C

24 TQFN-EP*

MAX17075GTG/V+ -40°C to +105°C

24 TQFN-EP*

*EP = Exposed pad.

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

/V denotes an automotive qualified part.

Features

♦ 2.5V to 5.5V Input Operating Range

♦ Current Mode Step-Up Regulator

Fast-Transient Response

Built-In 20V, 3A, 0.16Ω n-Channel Power MOSFET

Cycle-by-Cycle Current Limit

87% Efficiency (5V Input to 13V Output)

1.2MHz Switching Frequency

±1% Output Voltage Regulation Accuracy

♦ High-Current 18V VCOM Buffer

±500mA Output Short-Circuit Current

45V/µs Slew Rate

20MHz -3dB Bandwidth

Rail-to-Rail Output

♦ Regulated Charge Pump for TFT Gate-On Supply

♦ Regulated Charge Pump for TFT Gate-Off Supply

♦ Logic-Controlled High-Voltage Switches with

Adjustable Delay

♦ Soft-Start and Timed Delay Fault Latch for All

Outputs

♦ Overload and Thermal Protection

Simplified Operating Circuit

VIN

2.5V TO 5.5V

R1

10Ω

C5

1µF

TO VCOM

VAVDD

BGND

VCC

LX

PGND

FB

OUT

COMP

MAX17075

NEG

POS

REF

AGND

RST

RSTIN

DRN

COM

SRC

VMAIN

FROM

SYSTEM

3.3V

VIN

VGON

VGOFF

FBN

DRVN

DRVP

BGND

FBP

SUP CTL EP DEL

FROM

Pin Configuration appears at end of data sheet.

TCON

For pricing, delivery, and ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

19-4353; Rev 2; 12/12

Share Link: