TPS61050 Datasheet | Texas Instruments

Features - 1 Four Operational Modes - Torch and Flash up to ILED = 1200 m A - Voltage-Regulated Boost Converter: 4.5 V, 5 V, and 5.25 V - Shutdown: 0.3 μA (Typical) - Total Solution Circuit Area < 25 mm2 - Up to 96% Efficiency - I2C-patible Interface up to 400 kbps - Integrated LED Turnon Safety Timer - Zero Latency TX-Masking Input (TPS61050) - Hardware Voltage Mode Selection Input (TPS61052) - Integrated ADC for LED VF Monitoring - Integrated Low Light Dimming Mode - LED Disconnect During Shutdown - Open and Shorted LED Protection - Overtemperature Protection - Available in a 12-Pin Nano Free™ (CSP) and 10-Pin QFN Packaging 2 Applications - Camera White LED Torch/Flash for Cell Phones, Smart-Phones and PDAs - Audio Amplifier Power Supply Typical Application Schematic L 2.2 m H I2C I/F SW SW AVIN VOUT SCL SDA GPIO FLASH_SYNC AGND PGND PGND COUT 10 m F P 3 Description The TPS6105x device is based on a high-frequency synchronous-boost topology with constant current sink to drive single white LEDs. The device uses an inductive fixed-frequency PWM control scheme using small external ponents, minimizing input ripple current. The 2-MHz switching frequency allows the use of small and low profile 2.2-μH inductors. To optimize overall efficiency, the device operates with only a 250-m V LED feedback...