ST1208 Datasheet, PDF (1/12 Pages) Sitronix Technology Co., Ltd. – 3-Channel White LED Driver

ST
Sitronix
! Features
" High Efficiency Operation ( PLEDs / PBATT )
-- Extends battery life
-- Peak efficiency over 88 %
" 1 / 1.5x Fractional Charge Pump Circuits
-- extends voltage operate range
" Range of LED Driver Power
-- 2.7 to 5.0V
" Drivability 30 mA/LED with Li-Ion Battery
Operating Range
" Shutdown Mode Draws Less Than 1 uA
" Regulated to ± 3 % Output Current Matching
" Soft-Start Function To Limit Inrush Current
" Dimming Control by Logic or PWM
" No external Schottky Diode and Inductor
Required
" Low Input Ripple and EMI
! Description
The ST1208 is a versatile change pump designed
for use in battery operated power supply application.
The wide input range is matched for Li-Ion battery
applications.
The ST1208 LED drivers feature a fractional
change pump implementation with efficiency
comparable to a switching regulator without costly
inductors. Only four tiny ceramic capacitors are
required, and no external inductor is required for
! Applications
" Cellular phones
" PDAs
" Portable communication devices
" LED/Display backlight driver
" Digital Cameras
" Handheld Electronics
" Flash LED driver
ST1208
3-Channel White LED Driver
" Short Circuit and Over-Temperature Protection
" 2KV ESD Rating
" Thin QFN ( 4 mm X 4 mm ), Small TSSOP-16L
Packages and Bare Chip
! Ordering Information
Ordering No.
ST1208-Q
ST1208-T
ST1208-B
Package
QFN-16
TSSOP-16L
Bare Chip
operation that provides a reduced-EMI solution.
Proprietary low noise mode switching circuit and
constant output current allow the use of extremely
small input and output capacitor.
The ST1208 contains a thermal management circuit to
protect the device under continuous output short circuit
condition.
V1.1
1/12
2004/10/27