SP7680EB Datasheet

IC型號：
SP7680EB
PDF描述：
Complete Backlight Solution
文件大?。?/label>
445.59KB
PDF頁數(shù)：
16頁
芯片廠家：
SIPEX

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Solved by

SP7680

Complete Backlight Solution

LED 2

LED 5

LED 4

FEATURES

Complete Backlight Solution

Separate control for 4 main, 2 sub, and keypad LEDs

Built-in 6-bit DAC for precise current setting

I C serial interface

Data is stored in shutdown

1x and 1.5x mode operation with automatic switchover

Very low dropout: 200mV typ

Very low 31碌A(chǔ) current (LSB)

2MHz switching frequency reduces external components

Power-saving shutdown mode of 1碌A(chǔ)

Built-in over-temperature protection

Available in Lead Free, RoHS compliant package:

Small 16-pin 3x3 QFN

LED 6

LED 7

SDA

SCL

LED 3

LED 1

GND

C2+

C2-

The SP7680 is a complete backlight display solution that is designed to independently control LEDs for

main and auxiliary displays as well as the keypad. A two line I C serial interface allows a simple way to

adjust each current individually in order to provide ultimate flexibility in driving LEDs. The data is loaded

into internal registers upon power up and stored while in shutdown. When the chip is enabled the stored

values set the LED currents. Extra low 33碌A(chǔ) LSB allows trickle current through the LEDs for non-

reflecting LCD displays. The SP7680 automatically detects 1x or 1.5x operation for optimal efficiency.

TYPICAL APPLICATION CIRCUIT

MAIN

SUB

AUX

OUT

C1-

C1+

DESCRIPTION

VIN

2.2碌F

SDA

SCL

VIN

SP7680

VOUT

1碌F

0.47碌F

June 21-07 revH

SP7680: Complete Backlight Solution

錚?/div>

2007 Sipex Corporation

Page 1

制造商
Exar
產(chǎn)品種類
LED 照明開發(fā)工具
核心
SP7680
用于
Backlight White LEDs
產(chǎn)品
Evaluation Boards
電源電壓
2.7 V to 5.5 V

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