Datasheet > SE3362

SE3362

更新时间： 2024-01-10 15:11:15

品牌	Logo	应用领域
思旺 - SEAWARD		驱动器泵
页数	文件大小	规格书
8页	324K
描述
4-Channel Regulated Charge Pump White LED Driver

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中文翻译

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数据手册

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SE3362 数据手册

Description

Features

The SE3362 is a charge pump operating in either

1x mode or 2x fractional mode regulating current

through each of the 4 LED pins. Operation at a fixed

high frequency of 1MHz typical allows the use of

very small value ceramic capacitors.

Drives individually up to 4 LEDs

Output current up to 30mA per LED

Digital control On/Off of each LED

Compatible with supply voltage of 2.85V to 5.5V

Power efficiency up to 90%

The SE3362 drives white light-emitting diodes

(LED’s) connected in parallel and provides tightly

matched regulated current to achieve uniformity of

brightness in LCD backlighting applications. An

external resistor RSET controls the output current

level. LED currents of up to 30mA are supported

over a range of input supply voltages from 2.85V to

5.5V, making the device ideal for battery-powered

applications.

2 modes of operation 1x and 2x

Automatic short circuit detect/disable

High-frequency Operation at 1MHz

Low value ceramic capacitors

Automatically switch to power save mode if no

LED is deteted to be connected to the IC

Thin QFN 16-lead package, 3×3mm

100% Lead (Pb)-Free

LED dimming can be accomplished by several

methods including using a resistor Rset (the exact

Application

Color LCD and keypad Backlighting

formula will

be provided in the Application

Cellular Phones

Handheld Devices

Digital Cameras

PDAs

Section) to set the RSET pin current, applying a

PWM signal on the Control signals, or adding a

switched resistor in parallel with Rset. The Enable

input pin allows the device to be placed in

power-down mode with close to "zero” quiescent

current. The SE3362 features short circuit and Over

Temperature Protection (OTP). The device is

available in a 16- lead thin QFN package with a max

height of 0.8mm.

Portable MP3 players

Application Diagram

Revision 12/4/2008

Preliminary and all contents are subject to change without prior notice

12 3 4 5 6 7 8

中文翻译

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