Datasheet > MAX17075_12

MAX17075_12

更新时间： 2022-11-17 18:35:06

品牌	Logo	应用领域
美信 - MAXIM		稳压器开关运算放大器泵
页数	文件大小	规格书
23页	601K
描述
Boost Regulator with Integrated Charge Pumps, Switch Control, and High-Current Op Amp

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MAX17075_12 数据手册

19-ꢀ353; Rev 1; 5ꢁ12

Boost Regulator with Integrated Charge Pumps,

Switch Control, and High-Current Op Amp

MAX1075

General Description

Features

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.

o 2.5V to 5.5V Input Operating Range

o Current Mode Step-Up Regulator

Fast-Transient Response

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

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.

Cycle-by-Cycle Current Limit

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

1.2MHz Switching Frequency

1% Output Voltage Regulation Accuracy

o High-Current 18V VCOM Buffer

500mA Output Short-Circuit Current

45V/µs Slew Rate

20MHz -3dB Bandwidth

Rail-to-Rail Output

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.

o Regulated Charge Pump for TFT Gate-On Supply

o Regulated Charge Pump for TFT Gate-Off Supply

o Logic-Controlled High-Voltage Switches with

The operational amplifier, typically used to drive the

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

cuit current ( 500mA), fast slew-rate (ꢀ5Vꢁ/s), wide

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

Adjustable Delay

o Soft-Start and Timed Delay Fault Latch for All

Outputs

The MAX17075 is available in a 2ꢀ-pin thin QFN pack-

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

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

ultra-thin LCD design. It operates over the -ꢀ0°C to

+85°C temperature range.

o Overload and Thermal Protection

Simplified Operating Circuit

MAIN

2.5V TO 5.5V

10Ω

Applications

Notebook Computer Displays

VCC

OUT

1µF

FROM

SYSTEM

3.3V

PGND

LCD Monitor Panels

LCD TVs

TO V

COM

COMP

AVDD

MAX17075

Ordering Information

BGND

RST

RSTIN

NEG

POS

REF

PART

TEMP RANGE

PIN-PACKAGE

DRN

MAX17075ETG+

-40°C to +85°C

24 TQFN-EP*

*EP = Exposed paddle.

+Denotes a lead(Pb)-freeꢁRoHS-compliant package.

COM

SRC

GON

AGND

FBN

DRVP

GOFF

DRVN

BGND

FBP

DEL

SUP CTL EP

FROM

TCON

Pin Configuration appears at end of data sheet.

________________________________________________________________ Maxim Integrated Products

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.

12 3 4 5 6 7...23

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