Datasheet > TPS7510X

TPS7510X

更新时间： 2024-09-22 04:27:27

品牌	Logo	应用领域
德州仪器 - TI		驱动器
页数	文件大小	规格书
15页	364K
描述
Low Dropout, Two-Bank LED Driver with PWM Brightness Control

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TPS7510X 数据手册

TPS7510x

www.ti.com

SBVS080C–SEPTEMBER 2006–REVISED MARCH 2007

Low Dropout, Two-Bank LED Driver with PWM Brightness Control

FEATURES

DESCRIPTION

•

Regulated Output Current with 2%

LED-to-LED Matching

The TPS7510x linear low dropout (LDO) matching

LED current source is optimized for low power

keypad and navigation pad LED backlighting

applications. The device provides a constant current

to up to four unmatched LEDs organized in two

banks of two LEDs each in a common-cathode

topology. Without an external resistor, the current

source defaults to factory-programmable, preset

current level with ±0.5% accuracy (typical). An

optional external resistor can be used to set initial

brightness to user-programmable values with higher

accuracy. Brightness can be varied from off to full

brightness by inputting a pulse width modulation

(PWM) signal on each Enable pin. Each bank has

independent enable and brightness control, but

current matching is done to all four channels

concurrently. The input supply range is ideally suited

for single-cell Li-Ion battery supplies and the

TPS7510x can provide up to 25mA per LED.

Drives up to Four LEDs at 25mA Each in a

Common Cathode Topology

28mV Typical Dropout Voltage Extends

Usable Supply Range in Li-Ion Battery

Applications

•

Brightness Control Using PWM Signals

Two 2-LED Banks with Independent Enable

and PWM Brightness Control per Bank

•

No Internal Switching Signals—Eliminates EMI

Default LED Current Eliminates External

Components

–

Default values from 3mA to 10mA (in 1mA

increments) available using innovative

factory EEPROM programming

–

Optional external resistor can be used for

high-accuracy, user-programmable current

No internal switching signals are used, eliminating

troublesome electromagnetic interference (EMI). The

TPS7510x is offered in an ultra-small, 9-ball, 0.4mm

ball-pitch wafer chip-scale package (WCSP) and a

3mm × 3mm QFN package, yielding a very compact

total solution size ideal for mobile handsets and

portable backlighting applications. The device is fully

specified over T_J= –40°C to +85°C.

•

Over-Current and Over-Temperature

Protection

Available in Wafer Chip-Scale Package

APPLICATIONS

•

Keypad and Display Backlighting

White and Color LEDs

Cellular Handsets

PDAs and Smartphones

V_BATT

TPS7510x

TPS7510x YFF

9-Ball WCSP

(Top View)

V_IN

D1A

V_ENA

V_ENB

ENA

ENB

D2A

A3 B3

A2 B2

A1 B1

D1B

D2B

I_SET

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...15

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与TPS7510X相关器件

型号	品牌	获取价格	描述	数据表
TPS7510X_08	TI	获取价格	Low Dropout, Two-Bank LED Driver with PWM Brightness Control
TPS7510XYYYZ	TI	获取价格	Low Dropout, Two-Bank LED Driver with PWM Brightness Control
TPS75115	ETC	获取价格	Fast-Transient-Response 1.5-A LDO Voltage Regulator
TPS75115Q	TI	获取价格	FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
TPS75115QPWP	TI	获取价格	FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
TPS75115QPWPG4	TI	获取价格	FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
TPS75115QPWPR	TI	获取价格	FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
TPS75115QPWPREP	TI	获取价格	FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
TPS75115QPWPREPR	TI	获取价格	FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
TPS75115QPWPRG4	TI	获取价格	FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS

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