The LM3553 is a fixed frequency, current mode step-up DC/DC converter with two regulated
current sinks. The device is capable of driving loads up to 1.2A from a single-cell Li-Ion battery.
The LM3553 includes a TX pin that forces Torch mode during a flash event allowing for
synchronization between the RF power amplifier and Flash/Torch modes. It also includes a
multi-function pin (M/F) that can serve as a GPIO and a hardware RESET pin.
The LM3553 is available in a 3mm by 3mm package.
View datasheet View product folder