Datasheet > MAX17114ETM+TCB2

MAX17114ETM+TCB2

更新时间： 2024-11-28 09:01:47

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
33页	2662K
描述
Switching Regulator,

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数据手册

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MAX17114ETM+TCB2 数据手册

19-4820; Rev 0; 7/09

Multi-Output Power Supply with VCOM Amplifier

and High-Voltage Gamma Reference for LCD TVs

General Description

Features

S 8.0V to 16.5V IN Supply-Voltage Range

The MAX17114 generates all the supply rails for thin-film

transistor liquid-crystal display (TFT LCD) TV panels

operating from a regulated 12V input. It includes a step-

down and a step-up regulator, a positive and a negative

charge pump, an operational amplifier, a high-accuracy,

high-voltage gamma reference, and a high-voltage

switch control block. The MAX17114 can operate from

input voltages from 8V to 16.5V and is optimized for an

LCD TV panel running directly from 12V supplies.

S Selectable Frequency (500kHz/750kHz)

S Current-Mode Step-Up Regulator

Fast Load-Transient Response

High-Accuracy Output Voltage (1.0%)

Built-In 20V, 3.5A, 100mI MOSFET

High Efficiency

Adjustable Soft-Start

Adjustable Current Limit

The step-up and step-down switching regulators feature

internal power MOSFETs and high-frequency opera-

tion allowing the use of small inductors and capacitors,

resulting in a compact solution. The step-up regulator

provides TFT source driver supply voltage, while the

step-down regulator provides the system with logic sup-

ply voltage. Both regulators use fixed-frequency current-

mode control architectures, providing fast load-transient

response and easy compensation. A current-limit func-

tion for internal switches and output-fault shutdown pro-

tects the step-up and step-down power supplies against

fault conditions. The MAX17114 provides soft-start func-

tions to limit inrush current during startup. In addition,

the MAX17114 integrates a control block that can drive

an external p-channel MOSFET to sequence power to

source drivers.

Low Duty-Cycle Operation (13.2V - 13.5V AVDD)

S Current-Mode Step-Down Regulator

Fast Load-Transient Response

Built-In 20V, 3.2A, 120mI MOSFET

High Efficiency

3ms Internal Soft-Start

S Adjustable Positive Charge-Pump Regulator

S Adjustable Negative Charge-Pump Regulator

S Integrated High-Voltage Switch with Adjustable

Turn-On Delay

S High-Speed Operational Amplifier

200mA Short-Circuit Current

45V/µs Slew Rate

S High-Accuracy Reference for Gamma Buffer

0.5% Feedback Voltage

The positive and negative charge-pump regulators pro-

vide TFT gate-driver supply voltages. Both output volt-

ages can be adjusted with external resistive voltage-

dividers. A logic-controlled, high-voltage switch block

allows the manipulation of the positive gate-driver supply.

Up to 30mA Load Current

Low-Dropout Voltage 0.5V at 60mA

S External p-Channel Gate Control for AVDD

Sequencing

The MAX17114 includes one high-current operational

amplifier designed to drive the LCD backplane (VCOM).

The amplifier features high output current (Q200mA), fast

slew rate (45V/Fs), wide bandwidth (20MHz), and rail-to-

rail outputs.

S XAO Comparator

S Input Undervoltage-Lockout and Thermal-

Overload Protection

S 48-Pin, 7mm x 7mm, Thin QFN Package

Also featured in the MAX17114 is a high-accuracy, high-

voltage adjustable reference for gamma correction.

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

The MAX17114 is available in a small (7mm x 7mm),

ultra-thin (0.8mm), 48-pin, TQFN-EP package and oper-

ates over the -40NC to +85NC temperature range.

MAX17114ETM+

-40NC to +85NC

48 TQFN-EP*

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

*EP = Exposed pad.

Applications

Pin Configuration and Simplified Operating Circuit appear

at end of data sheet.

LCD TV Panels

_______________________________________________________________ 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...33

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与MAX17114ETM+TCB2相关器件

型号	品牌	获取价格	描述	数据表
MAX17114EVKIT	MAXIM	获取价格	Fully Assembled and Tested
MAX17114EVKIT+	MAXIM	获取价格	Fully Assembled and Tested
MAX17115	MAXIM	获取价格	Adjustable Output Voltages (External Resistors)
MAX17115ETJ+	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, 5 X 5 MM, 0.75 MM HEIGHT, ROHS COMPLIANT, WHHD-2, TQFN-32
MAX17115ETJ+C32	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, 5 X 5 MM, ROHS COMPLIANT, TQFN-32
MAX17115ETJ+CH3	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, 5 X 5 MM, ROHS COMPLIANT, TQFN-32
MAX17115ETJ+TCH3	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, 5 X 5 MM, ROHS COMPLIANT, TQFN-32
MAX17115EVKIT	MAXIM	获取价格	Adjustable Output Voltages (External Resistors)
MAX17115EVKIT+	MAXIM	获取价格	Adjustable Output Voltages (External Resistors)
MAX17116ETG+	MAXIM	获取价格	Switching Regulator, Current-mode, 0.2A, 1610kHz Switching Freq-Max, BICMOS, 4 X 4 MM, 0.7

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