TPS61256CYFFR

The TPS61256xC device provides a power solution optimized for battery-powered portable applications. Supporting up to 800mA load current from a single cell (discharge voltage as low as 2.65V), the TPS61256xC is designed for low-power applications and allows the use of low-cost chip inductors and capacitors. With a wide input voltage range of 2.3V to 5.5V, the device supports applications powered by Li-ion batteries of various voltages. Multiple fixed output voltage versions are available between 3.15V and 5.0V. The TPS61256xC operates at a regulated switching frequency of 3.5MHz and enters power-save mode at light load currents to maintain high efficiency across the full load current range. PFM mode reduces quiescent current to 37μA (typical) during light-load operation, extending battery life. In addition, the TPS61256xC device supports pass-through mode by pulling EN low. In this mode, the output voltage follows the input voltage, with voltage drop determined by the resistance of the inductor and high-side FET. The TPS61256xC minimizes the number of external components, resulting in a very compact solution size. It supports the use of small inductors and input capacitors to achieve a small solution footprint.

Applications

• NFC PA power supply
• Mobile phones, smartphones
• Mono and stereo APA applications
• USB charging ports

Key features

• 93% efficiency at 3.5MHz
• 37μA quiescent current during normal operation
• Wide input voltage range: 2.3V to 5.5V
• Supports VIN≥VOUT operation
• DC output voltage total accuracy ±2%
• Light-load pulse frequency modulation (PFM) mode
• Pass-through mode via EN pull-low
• Thermal shutdown and overload protection
• Only three SMT external components required
• Total solution size <25mm²
• 9-pin NanoFree™ (CSP) package