Texas Instruments TPS61305YFFR

Description
The TPS6130x device is a high-frequency synchronous boost topology with constant current sinks to drive up to three white LEDs in parallel. It operates as a regulated current source and a standard voltage boost regulator, keeping the output voltage regulated even when the input voltage exceeds the nominal output voltage. The device enters power-save mode operation at light load currents to maintain high efficiency over the entire load current range. To simplify flashlight synchronization with the camera module, the device offers a trigger pin (FLASH_SYNC) for zero latency LED turn-on time.

Features
Four operational modes: DC Light and Flashlight, Voltage Regulated Converter: 3.8V...5.7V, Standby: 2μA (typ.), Storage Capacitor Friendly Solution
Automatic VF and ESR Calibration
Power-Save Mode for Improved Efficiency at Low Output Power, Up to 95% Efficiency
Output Voltage Remains Regulated When Input Voltage Exceeds Nominal Output Voltage
I²C Compatible Interface up to 3.4Mbits/s
Zero Latency Tx-Masking Input
Hardware Voltage Mode Selection Input (TPS61300, TPS61301)
DC Light Mode Selection Input (TPS61300, TPS61306)
Hardware Reset Input (TPS61301, TPS61305)
LED Temperature Monitoring (TPS61305)
Privacy Indicator LED Output
Integrated LED Safety Timer
Total Solution Size of Less Than 25 mm² (<1mm height)
Available in a 20-Pin NanoFree™ (CSP)

Applications
Single/Dual/Triple White LED Flashlight Supply for Cell Phones and Smart-Phones
LED Based Xenon "Killer" Flashlight
Audio Amplifier Power Supply