STCF03I

更新时间： 2024-09-24 04:01:59

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		驱动器
页数	文件大小	规格书
33页	451K
描述
High power white LED driver with I2CTM interface

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STCF03I 数据手册

STCF03I

High power white LED driver with I²C™ interface

Features

■ Buck-boost DC/DC converter

■ Drives one power white led up to:

800 mA between 3.3 V to 5.5 V

600 mA between 2.7 V to 5.5 V

■ Efficiency up to 92%

TFBGA25 (3x3)

■ Output current control

■ 1.8 MHz typ fixed frequency PWM

■ Synchronous rectification

Applications

■ Full I C control

■ Operational modes:

■ Cell phone and smart phones

■ Camera flashes/strobe

Shutdown mode

■ Ready mode + auxiliary red led

Ready mode + NTC

■ PDAs and digital still cameras

Flash mode: up to 800 mA

Torch mode: up to 200 mA

Description

■ Soft and hard triggering of flash

The STCF03I is a high efficiency power supply

solution to drive a single flash LED in camera

phone, PDAs and other hand-held devices. It is a

buck - boost converter to guarantee a proper LED

current control over all possible conditions of

battery voltage and output voltage; the output

current control ensures a good current regulation

over the forward voltage spread characteristics of

the Flash LED.

■ Flash and torch dimming with 16 exponential

values

■ Dimmable red led indicator auxiliary output

■ Internally or externally timed flash operation

■ Digitally programmable safety time-out in flash

mode

■ LED overtemperature detection and protection

with external NTC resistor

Thanks to the high efficiency of the converter, the

input current taken from the battery remains

under 1.5 A. All the functions of the device are

■ Opened and shorted led failure detection and

protection

controlled through the I C bus which helps to

■ Chip over temperature detection and protection

■ < 1 µA Shutdown current

reduce logic pins on the package and to save

PCB tracks on the board. (See continuous

description)

■ Package (3x3 mm) TFBGA25

Table 1. Device summary

Order code

Package

TFBGA25 (3x3 mm)

Packaging

STCF03ITBR

3000 parts per reel

September 2007

Rev. 4

1/33

www.st.com

12 3 4 5 6 7...33

中文翻译

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