Data Brief

October 2005

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4

For further information contact your local STMicroelectronics sales office..

Rev. 1

STCF02

High Power White Led Driver

Features

Up To 600mA Between 2.7 To 5.5V

Range

Shutdown Mode

Shutdown Mode With NTC

Flash Mode: Up To 600 mA

Medium Flash Mode

Torch Mode: Up To 250 mA

Shutdown Mode

Mode

Applications

Description

The STCF02 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

the

battery

voltage

(particularly in the case, that the output voltage is

lower than the input voltage); the output current

control ensure a good current regulation over the

forward voltage spread characteristics of the

Flash LED.

Three logic input signal can select 5 modes of

operation: shutdown mode (quiescent current less

than 1µA typ), shutdown mode with NTC active,

torch mode (Drive the led up to 250 mA), flash

mode (up to 600 mA) and medium flash mode that

reduce the flash current.

The high efficiency of the converter allows having

the input current taken from the battery lower than

1.5A and the peak inductor current is limited to 2.3

Amps typical. Other features include softstart

control, thermal shutdown, short circuit protection,

over voltage protection and LED temperature

protection.

Alternatively

to

LED

temperature

protection, a safety flash time out can be easily

implemented. The device is packaged in a QFN

20 leads with a dimension of 4x4 mm and a height

of less than 1mm.

www.st.com

QFN20

Order Codes

Type

Package

Comments

STCF02PMR

QFN20 (4x4 mm)

4500 parts per reel