Datasheet > LM3503SQX-25

LM3503SQX-25

更新时间： 2024-11-21 04:44:27

品牌	Logo	应用领域
美国国家半导体 - NSC		驱动器
页数	文件大小	规格书
20页	1062K
描述
Dual-Display Constant Current LED Driver with Analog Brightness Control

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LM3503SQX-25 数据手册

July 2005

LM3503

Dual-Display Constant Current LED Driver with Analog

Brightness Control

80% Peak Efficiency

General Description

n Output Voltage Protection Options: 16V, 25V, 35V & 44V

n Input Under-Voltage Protection

n Internal Soft Start Eliminates Inrush Current

n 1 MHz Constant-Switching Frequency

n Analog Brightness Control

The LM3503 is a white LED driver for lighting applications.

For dual display backlighting applications, the LM3503 pro-

vides a complete solution. The LM3503 contains two internal

white LED current bypass FET (Field Effect Transistor)

switches. The white LED current can be adjusted with a DC

voltage from a digital to analog converter or RC filtered PWM

(pulse-width-modulated) signal at the Cntrl pin.

n Wide Input Voltage Range: 2.5V to 5.5V

n Low Profile Packages: 1 mm Height

— 10 Bump MicroSMD

— 16 Pin LLP

With no external compensation, cycle-by-cycle current limit,

output over-voltage protection, input under-voltage protec-

tion, and dynamic white LED current control capability, the

LM3503 offers superior performance over other step-up

white LED drivers.

Applications

n Dual-Display Display Backlighting in Portable devices

n Cellular Phones and PDAs

Features

n Drives up to 4, 6, 8 or 10 White LEDs for Dual Display

Backlighting

Typical Application

20128662

DS201286

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与LM3503SQX-25相关器件

型号	品牌	获取价格	描述	数据表
LM3503SQX-25/NOPB	TI	获取价格	Dual-Display Constant Current LED Driver with Analog Brightness Control 16-WQFN -40 to 85
LM3503SQX-35	NSC	获取价格	Dual-Display Constant Current LED Driver with Analog Brightness Control
LM3503SQX-44	NSC	获取价格	Dual-Display Constant Current LED Driver with Analog Brightness Control
LM3508	NSC	获取价格	Synchronous Magnetic Constant Current White LED Driver
LM3508	TI	获取价格	同步磁性恒流白光 LED 驱动器
LM3508_08	NSC	获取价格	Synchronous Magnetic Constant Current White LED Driver
LM3508TL	NSC	获取价格	Synchronous Magnetic Constant Current White LED Driver
LM3508TL/NOPB	TI	获取价格	同步磁性恒流白光 LED 驱动器 \| YZR \| 9 \| -30 to 85
LM3508TLX	NSC	获取价格	Synchronous Magnetic Constant Current White LED Driver
LM3508TLX/NOPB	NSC	获取价格	IC LED DISPLAY DRIVER, PBGA9, 1.514 X 1.514 MM, 0.60 MMM HEIGHT, MICRO, LEAD FREE, SMD-9,