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The LDS8621 is a high efficiency multi- mode fractional charge pump with ultra low feedback voltage that can drive up to two high- current LEDs.

The LDS8621 is parametrically identical to the LDS8620 except that its output configuration and LED current are controlled through a two-wire, dual-role logic interface. Its logic interface functions as both an IC enable and a PWM-mode flash LED brightness control. Its PWM1 input pin controls the operation of the LEDA output as its PWM2 input pin controls the operation of the LEDB output. Both PWM1 and PWM2 input signals can be controlled independently or connected together and driven by an application/baseband processor's GPIO interface.

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