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TJ9910

Home > Products > Converter & Controller > TJ9910

UNIVERSAL HIGH BRIGHTNESS LED DRIVER

	FEATURES
	- Over 90% Efficiency - 8V to 450V Input Range - Applications from a few mA to more than 1A output - LED String From One to Hundreds of Diodes - Linear and PWM Dimming Capability - Protection from short circuit at output - Temperature protection

DESCRIPTION

The TJ9910 is a PWM high-efficiency LED driver control IC.
It allows efficient operation of high-brightness(HB) LEDs from voltage sources ranging from 8VDC up to 450VDC.
TJ9910 controls an external MOSFET at fixed switching frequencies up to 300 kHz. The frequency can be programmed using a single resistor.
The LED string is driven at a constant current rather than a constant voltage, thus providing a constant light output and an enhanced reliability. The output current can be programmed between a few milliamps and up to more than 1.0A. TJ9910 uses a rugged high-voltage junction isolated process that can withstand an input voltage surge up to 450V. The output current to a LED string can be programmed to any value between zero and its maximum value by applying an external control voltage at the linear dimming control input of TJ9910. TJ9910 provides a low-frequency PWM dimming input that can accept an external control signal with a duty ratio of 0-100% and a frequency of up to a few kHz.

TJ9910

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