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Texas Instruments TPS6125x High Efficiency Step-Up Converters

Texas Instruments TPS6125x High-Efficiency Step-Up Converters provide a power supply solution for battery-powered portable applications. Intended for low-power applications, the TPS6125x supports up to 800mA load current from a battery discharged as low as 2.65V 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 with an extended voltage range. Different fixed voltage output versions are available from 3.15V to 5.0V. The Texas Instruments TPS6125x operates at a regulated 3.5MHz switching frequency and enters power-save mode operation at light load currents to maintain high efficiency over the entire load current range. The PFM mode extends the battery life by reducing the quiescent current to 37µA (typ.) during a light load operation.

Features

  • 93% efficiency at 3.5MHz operation
  • 21µA quiescent current in standby mode
  • 37µA quiescent current in normal operation
  • Wide VIN range from 2.3V to 5.5V
  • VIN ≥ VOUT operation
  • IOUT ≥ 800mA at VOUT= 4.5V, VIN ≥ 2.65V
  • IOUT ≥ 1000mA at VOUT = 5.0V, VIN ≥ 3.3V
  • IOUT ≥ 1500mA (Peak) at VOUT = 5.0V, VIN ≥ 3.3V
  • ±2% total DC voltage accuracy
  • Light-load PFM mode
  • Selectable standby mode or true load
  • Disconnect during shutdown
  • Thermal shutdown and overload protection
  • Only three surface-mount external components required
  • Total solution size < 25mm2
  • 9-pin NanoFree™ (CSP) packaging

Applications

  • Cell phones, smartphones
  • Mono and stereo APA applications
  • USB charging ports (5V)

Functional Block Diagram

Block Diagram - Texas Instruments TPS6125x High Efficiency Step-Up Converters
Publié le: 2017-03-03 | Mis à jour le: 2023-11-03