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T8302

PWM Control 1A Step-Down Converter

Taiwan Memory Technology 

tm TE

CH

FEATURES

• Wide Input Voltage Range: 6V to 60V

• LED Output Current Up to 1A

• 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

• SOT-89 and SOP-8 Lead-free Package

Applications

• LED/Display Back Light Driver

• Lightings

• Portable Communication Devices

• Handheld Electronics

T8302

PWM Control 1A Step-Down Converter

GENERAL DESCRIPTION

The T8302 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 6V and 60V and

provides an externally adjustable output

current of up to 1A. Depending upon supply

voltage and external components, this can

provide up to 58 watts of output power. The

T8302 includes the output switch and a high-

side output current sensing circuit, which uses

an external resistor to set the nominal average

output current. Output current can be adjusted

above, or below the set value, by applying an

external control signal to the 'ADJ' pin. The

ADJ pin will accept either a DC voltage or a

PWM waveform. Depending upon the control

frequency, this will provide either a continuous

or a gated output current. The PWM filter

components are contained within the chip. The

T8302 is available in SOT-89 and SOP-8

Lead-free package.

PART NUMBER EXAMPLES

PART NO.

T8302-AXG

T8302-CDG

PACKAGE

SOT-89

SOP-8

TM Technology, Inc. reserves the right

P. 1

to change products or specifications without notice.

Publication Date: April. 2014

Revision:E

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