Boost LED driver with six regulated channels
The TPS61187RTJT is a 6-channel DC-DC boost regulator from Texas Instruments, designed for LED backlight applications. Each channel delivers 30 mA with PWM dimming control, and the integrated switch simplifies the external component count. Switching at 1 MHz allows the use of small inductors and ceramic capacitors, shrinking the overall footprint on the board. The input supply range spans 4.5 V to 24 V, and the boost output can reach 38 V, covering common LCD panel backlight strings.
Parametric fit for backlight designs
Six independent current sinks at 30 mA each give a total LED drive capacity of 180 mA — enough for a typical 6- to 10-inch display backlight. The PWM dimming input accepts an external signal for brightness control without audible noise from the inductor.
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