Datasheet Texas Instruments TL4242 — 数据表

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SLVS641B – APRIL 2008 – REVISED MARCH 2015 TL4242 500-mA, Adjustable, Constant-Current LED Driver
1 Features 3 Description The TL4242 device is an integrated, adjustable,
constant-current source that can drive loads up to
500 mA. The output current level can be adjusted
through an external resistor. The device is designed
to supply high-power LEDs. The TL4242 is provided
in the DRJ (WSON) package. Protection circuits
prevent damage to the device in case of overload,
short circuit, reverse polarity, and overtemperature.
The connected LEDs are protected against reverse
polarity as well as excess voltages up to 45 V. 1 Adjustable Constant Current up to 500 mA (В±5%)
PWM Brightness Regulation
Wide Input Voltage Range up to 42 V
Low Drop Voltage
Open-Load Detection
Overtemperature Protection
Short-Circuit Proof …