OCP8132A
Overview
- Input Voltage Range : 2.7V to 4.8V synchronous boost converter, optimized for maximum
- Dual Channel Output
- 7A camera flash application and maximum 800mA
- Drives up to 1.7A Regulated Output Current movie mode applications using high-current white (0.85A per Channel) LEDs in all single cell Li-ion powered products. An
- High Efficiency PWM Boost Converter adaptive regulation method ensures the current for each LED remains in regulation and maximizes efficiency. M Two simple logic control inputs (ENM and ENF) enable and disable flash and movie mode operation of O the OCP8132A. Movie-mode and Flash-mode current levels are independently fixed by two separate .C resistors (RM and RF). For Flash mode, a default timer can be used either to terminate a flash event or as a safety flash timer. One or two LEDs can be connected to the OCP8132A; in the case of two LEDs the output P current is matched between each diode. I Thermal regulation is integrated in Flash mode to limit the IC’s temperature and continuously provide the H maximum allowed output current. The OCP8132A contain a thermal management -C system to protect the device; a internal over-voltage protection (OVP) circuitry prevents damaged to the OCP8132A from open LED or open circuit conditions; and a cycle-by-cycle current limit prevents damage to T the OCP8132A. Built-in circuitry prevents excessive inrush current during start-up. The shutdown feature N reduces quiescent current to less than 1.0μA. The 2MHz switching frequency allow for the use of E tiny, low profile (1uH or 2.2uH) inductors and 4.7uF I ceramic capacitors. The device is available in 14-pin 2mmX3mm DFN package and is rated over the -40°C to 85°C.
- 2.0MHz Fixed Switching Frequency
- Up to 97% Efficiency with Small Inductor 1uH
- Integrated Soft-Start Eliminates
