The TPS61050 is a high-frequency synchronous boost converter with constant current control for driving single white LEDs. It can provide up to 1.2A of current. The device uses a small inductor and external components to minimize input ripple. The device also has a 250 mV LED feedback voltage to optimize efficiency. The TPS61050 can operate as either a constant current source or a standard voltage-boost regulator. This allows it to be used to power other high-power devices in the system, such as flashlights or flash cameras.
The TPS6105x family (TPS61050 and TPS61052) are 2‑MHz synchronous boost converters designed to drive high‑power white LEDs for camera flash/torch applications and other high‑voltage loads. The devices feature an I²C‑compatible interface for programming LED current or output voltage, a safety timer, and built‑in protections such as over‑temperature, LED open/short detection, and shutdown mode.
The devices are offered in 12‑pin NanoFree™ (CSP) and 10‑pin QFN packages, support up to 1200 mA LED current, and achieve up to 96 % efficiency. Detailed electrical characteristics, pin assignments, timing diagrams, and mechanical data are provided for system designers.
| Input voltage range | 2.5 V – 6.0 V |
|---|---|
| Output voltage range | 4.5 V / 5.0 V / 5.25 V |
| LED current range | 200 mA – 1200 mA |
| Switching frequency | 2 MHz |
| Efficiency | up to 96 % |
| Shutdown current (typical) | 0.3 µA |
| Package options | 12‑Pin NanoFree™ (CSP) and 10‑Pin QFN |
| I²C interface speed | up to 400 kbps |
| ADC resolution | 3 bits |
The shutdown current is typically 0.3 µA.
They operate at a 2 MHz switching frequency.
They can drive LED currents from 200 mA up to 1200 mA.
Both a 12‑pin NanoFree™ (CSP) and a 10‑pin QFN package are offered.