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EIGHT-CHANNEL CONSTANT CURRENT SINK WITH CURRENT MATCH AP3608E

Data Sheet

Mar. 2011 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

General Description

The AP3608E is an eight-channel constant current sink

with current match used for LED driver. It uses an

external resistor to set the current for eight LED strings

with an accuracy of ±1.5%. The full scale LED current

can be adjusted from 10mA to 100mA for each chan-

nel. The LED light can be adjusted by PWM dimming

function.

The device can keep working when LED opens with-

out damage. It features under voltage lockout protec-

tion and over temperature protection.

The AP3608E has four interface terminals (FB, SDB,

FBX and SDBX pins). The first two terminals allow

the device to work with a DC/DC converter to drive

LED arrays for good performance. And the other two

enable the device to be connected in parallel.

The AP3608E is available in QFN-4

×4-24, TSSOP-

20(EDP) and SOIC-20 packages.

Features

· Input Voltage Range: 4.2V to 5.5V

· Typical Output Current: 480mA (60mA/1V per

Channel)

· Maximum Output Current: 800mA (100mA/1.5V

per Channel)

· Current Match Accuracy: ±1.5%

· PWM Dimming Control

· Open LED Self-check and Protection

· Under Voltage Lockout Protection

· Over Temperature Protection

· FBX and SDBX Pins Enable Parallel Application

Applications

· Notebook

· LCD Display Modules

· LCD Monitor

· LCD TV

Figure 1. Package Types of AP3608E

QFN-4×4-24 TSSOP-20(EDP) SOIC-20

1 2 3 4 5 6 ... 14 15

Shrnutí obsahu

Strany 1 - Applications

EIGHT-CHANNEL CONSTANT CURRENT SINK WITH CURRENT MATCH AP3608E Data Sheet1Mar. 2011 Rev. 1. 5 BCD Semiconductor Manufacturing L

Strany 2 - Pin Configuration

EIGHT-CHANNEL CONSTANT CURRENT SINK WITH CURRENT MATCH AP3608E Data Sheet10Mar. 2011 Rev. 1. 5 BCD Semiconductor Manufacturing

Strany 3 - Pin Description

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Strany 4

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Strany 7 - Duty Cycle (%)

IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the

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Strany 9 - RV1941I /.=

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Strany 11 - Data Sheet

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