T8322AD Datasheet, PDF (1/10 Pages) Taiwan Memory Technology – PWM Control 1500mA Step-Down Converter

tm TE
CH
Preliminary T8322AD
PWM Control 1500mA Step-Down Converter
FEATURES
• Wide Input Voltage Range: 4.5V to 30V
• LED Output Current Up to 1500mA
• Soft-start
• Single pin on/off and brightness control
using DC voltage or PWM
• High efficiency (up to 97%)
• Up to 1MHz switching frequency
• Typical 5% output current accuracy
•SOP-8 Lead-free Package
Applications
• LED/Display Back Light Driver
• Lightings
• Portable Communication Devices
• Handheld Electronics
GENERAL DESCRIPTION
The T8322AD is a continuous mode inductive
step-down converter, designed for driving
single or multiple series connected LEDs
efficiently from a voltage source higher than
the LED voltage. The device operates from an
input supply between 4.5V and 30V and
provides an externally adjustable output
current of up to 1500mA. Depending upon
supply voltage and external components, this
can provide up to 24 watts of output power.
The T8322AD includes the output switch and
a high-side output current sensing circuit,
which uses an external resistor to set the
nominal average output current. The T8322AD
is available in SOP-8 Lead-free package.
PART NUMBER EXAMPLES
PART NO.
T8322AD
PACKAGE
SOP-8
TM Technology, Inc. reserves the right
P. 1
to change products or specifications without notice.
Publication Date: Sep. 2014
Revision:C