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TLE 4309 G Power LED Driver Adjustable Linear Constant Current Source up to 500mA

Infineon Technologies

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Product Description:
T H E T L E 4 3 0 9 G drives LEDs with constant current resulting in constant
brightness and extended lifetimes. The TLE 4309 G is fully capable to withstand
harsh requirements due to its internal protection circuits against overload, short
circuit and reverse polarity.
A Chip temperature monitoring circuit shuts off the circuit and prevents the IC from
destruction or damage due to over temperature.
With the PWM input the LED brightness can be regulated via duty cycle. Also
PWM = Low sets the TLE 4309 G in sleep mode resulting in a very low current
consumption of < 1 μA typ. Due to the high impedance of the PWM input the PWM
pin can thus also be used as an enable input.

Industrial Applications for LED Driver
■ Traffic Lights
■ Street marker lights
■ Displays
■ General Lighting
■ LED signage

Product Specifications:
■ Adjustable Constant Current:
up to 500 mA
■ Pulse width modulation input (PWM)
for brightness control
■ 1 μA current consumption in sleep
■ Fully Suitable for use in automotive
and industrial applications
Over-Temperature Protection
Reverse Polarity Proof
■ Operating Input Voltage Range
from 4.5 V up to 24 V
■ Short circuit Protection to GND and VCC
■ Low Drop Voltage:
Full brightness at low battery voltage
■ Temperature Range
40C to 150C
■ Power Package PG-TO263-7

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