Datasheet > FSP3303

FSP3303

更新时间： 2024-11-02 07:00:19

品牌	Logo	应用领域
FOSLINK		泵
页数	文件大小	规格书
10页	373K
描述
4 & 6 CHANNEL CHARGE PUMPS FOR WHITE LED BIAS

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中文翻译

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数据手册

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FSP3303 数据手册

4 & 6 CHANNEL CHARGE PUMPS FOR WHITE LED BIAS

FSP3302/FSP3303

FEATURES

GENERAL DESCRIPTION

Two LED Configurations Available:

The FSP3302/FSP3303 are high performance, white

LED bias generators for systems consisting of multiple

white LEDs. The FSP3302/FSP3303 are identical

FSP3302: Up to 4 LEDs

FSP3303: Up to 6 LEDs

High Efficiency Proprietary Charge Pump

Automatic 1x/1.5x Mode-Switching

Ensures Maximum Efficiency

except for the number of LEDs they drive; FSP3302

supports up to four LEDs, while FSP3303 can supply up

to six LEDs.

Wide 2.7V to 5.2V Input Voltage Range

0.3% White LED Brightness Matching

Digitally Programmed 1dB Brightness Steps

Up to 44mA per LED

These devices integrate proprietary constant-frequency

charge pump circuitry that includes automatic

mode-switching to maximize efficiency with accurate,

matched current sources that drive the white LEDs.

Current matching is better than 0.3%, resulting in highly

uniform brightness across different LED channels.

The FSP3302/FSP3303 feature adjustable LED bias

currents, which are programmable through a simple

serial interface. Charge pump operation at 1.2MHz

allows the use of small capacitors and minimizes ripple.

The devices also feature soft-start circuitry to limit

inrush current during startup, and thermal shutdown

protection.

Automatic Programming Finish Detection

1.2MHz Operation for Low Ripple

Simple Serial Interface

Thermal Shutdown Protection

Tiny QFN16L and µQFN16L Packages

APPLICATIONS

Cell Phones

Portable Devices

The FSP3302/FSP3303 are available in space saving

QFN16L and µQFN16L packages.

PIN CONFIGURATION

(Top View)

2007-4-10

1/10

12 3 4 5 6 7...10

中文翻译

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