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TPS61291 Datasheet Low Iq Boost Converter

Manufacturer: Texas Instruments

Overview: Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS61291 SLVSBX9A – SEPTEMBER 2014 – REVISED SEPTEMBER 2014 TPS61291 Low Iq Boost Converter with Bypass Operation.

General Description

The TPS61291 is a boost converter with pin selectable output voltages and an integrated bypass mode.

In bypass operation, the device provides a direct path from the input to the system and allows a low power micro controller (MCU) such as the MSP430 to operate directly from a single 3V Li-MnO2 battery or dual alkaline battery cells.

In bypass mode the integrated feedback divider network for boost mode operation is disconnected from the output and the quiescent current consumption drops down to only 15nA (typical).

Key Features

  • 1 Input Voltage Range 0.9V to 5V.
  • Startup Voltage 1.5V at 20mA Load.
  • Pin Selectable Output Voltages: 3.3V, 3V, 2.5V.
  • 15nA typical Quiescent Current in Bypass Mode.
  • 5.7μA typical Quiescent Current in Boost Mode.
  • Bypass Switch from VIN to VOUT.
  • IOUT > 200mA at 3.3V VOUT, VIN = 1.8V.
  • Internal Feedback Divider Disconnect (Bypass Mode).
  • Controlled Bypass Transition Prevents Reverse Current into Battery.
  • Power-Sa.

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