1 Introduction

The TPS92633-Q1 three channel LED driver includes an unique thermal management design to reduce temperature rising on the device. This device can output full current loads up to 150mA per channel and each channel can be independently controlled. External shunt resistors are used to share the output current and power dissipation of the device. Both SUPPLY control and EN/PWM control are supported by this device to turn LED on or off. TPS92633-Q1 also has full diagnostic capabilities, including LED short-to-GND, LED open-circuit, single-LED-short and auto-recovery function. See Figure 1-1.

Figure 1-1 Functional Block Diagram

This device can output full current loads up to 150mA per channel and each channel can be independently controlled. If there is a higher current requirement for the LED string, it is easy to achieve that by connecting all output channels together and making all channels perform the same signals . See Figure 1-2

Figure 1-2 TPS92633-Q1 Typical Schematic for Higher Output Current