The TPS61060DRBR is a high-frequency synchronous Boost Converter with constant current output to drive up to 5 white LEDs. For maximum safety, the device features integrated over-voltage and an advanced short-circuit protection when the output is shorted to ground. The device operates with 1MHz fixed switching frequency to allow for the use of small external components and to simplify possible EMI problems. The device comes with three different over-voltage protection thresholds (14/18/23V) to allow inexpensive and small-output capacitors with lower voltage ratings. The LED current is initially set with the external sense resistor Rs and the feedback voltage is regulated to 500 or 250mV, depending on the ILED pin configuration. Digital brightness control is implemented by applying a simple digital signal to the ILED pin. Alternatively, a PWM signal up to 1kHz can be applied to the enable pin to control the LED brightness.
Integrated over-voltage and short-circuit protection
PWM brightness control on enable
Digital brightness control on ILED
LEDs disconnected during shutdown
Operates with small-output capacitors down to 220nF
(EN)
