TPS61050

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS61050, TPS61052 SLUS525A – MARCH 2007 – REVISED SEPTEMBER 2015 TPS6105x 1.2-A High-Power White LED Driver 2-MHz Synchronous Boost Converter With I2C Compatible Interface 1 Features 1 Four Operational Modes – Torch and Flash up to ILED = 1200 mA – 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-Compatible 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 NanoFree™ (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 mH CIN P P I2C I/F TPS61050 SW SW AVIN VOUT LED SCL SDA GPIO FLASH_SYNC AGND PGND PGND COUT 10 mF P 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 components, minimizing input ripple current. The 2-MHz switching frequency allows the use of small an...