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TPS61281D
  • TPS61281D
  • TPS61281D

TPS61281D

ACTIVE

2.3MHz 3A synchronous boost converter with pass-through mode

Texas Instruments TPS61281D Product Info

1 April 2026 2

Parameters

Rating

Catalog

Topology

Boost

Vin (max) (V)

4.85

Vin (min) (V)

2.3

Vout (max) (V)

4.4

Vout (min) (V)

3.15

Switch current limit (typ) (A)

3

Features

Pass-through mode, Synchronous rectification

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.000015

Duty cycle (max) (%)

90

Package

DSBGA (YFF)-16-3.24 mm² 1.8 x 1.8

Features

  • 95% efficiency at 2.3 MHz operation
  • 3-µA quiescent current in low I Q pass-through mode
  • Wide V IN range from 2.3 V To 4.8 V
  • I OUT ≥ 4-A (Peak) at V OUT = 3.35 V, V IN ≥ 2.65 V
  • Integrated pass-through mode (35 mΩ)
  • Programmable valley inductor current limit and output voltage
  • True pass-through mode during shutdown
  • Best-in-class line and load transient
  • Low-ripple light-load PFM mode
  • In-Situ customization with On-Chip E 2PROM (write protection)
  • Two interface options:
    • I 2C compatible I/F up to 3.4 Mbps (TPS61280D/E)
    • Simple I/O logic control interface
  • Thermal shutdown and overload protection
  • Total solution size < 20 mm 2, sub 1-mm profile
  • 95% efficiency at 2.3 MHz operation
  • 3-µA quiescent current in low I Q pass-through mode
  • Wide V IN range from 2.3 V To 4.8 V
  • I OUT ≥ 4-A (Peak) at V OUT = 3.35 V, V IN ≥ 2.65 V
  • Integrated pass-through mode (35 mΩ)
  • Programmable valley inductor current limit and output voltage
  • True pass-through mode during shutdown
  • Best-in-class line and load transient
  • Low-ripple light-load PFM mode
  • In-Situ customization with On-Chip E 2PROM (write protection)
  • Two interface options:
    • I 2C compatible I/F up to 3.4 Mbps (TPS61280D/E)
    • Simple I/O logic control interface
  • Thermal shutdown and overload protection
  • Total solution size < 20 mm 2, sub 1-mm profile

Description

The TPS6128xD/E device provides a power supply solution for products powered by either by a Li-Ion, Nickel-Rich, Silicon Anode, Li-Ion or LiFePO4 battery. The voltage range is optimized for single-cell portable applications like in smart-phones or tablet PCs.

Used as a high-power pre-regulator, the TPS6128xD/E extends the battery run-time and overcomes input current- and voltage limitations of the powered system.

While in shutdown, the TPS6128xD/E operates in a true pass-through mode with only 3-µA quiescent consumption for longest battery shelf life.

During operation, when the battery is at a good state-of-charge, a low-ohmic, high-efficient integrated pass-through path connects the battery to the powered system.

If the battery gets to a lower state of charge and its voltage becomes lower than the desired minimum system voltage, the device seamlessly transits into boost mode to uses the full battery capacity.

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