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TPS53126
  • TPS53126
  • TPS53126

TPS53126

ACTIVE

4.5-V to 24-V, synchronous dual-D-CAP2 buck controller with selectable switching frequency

Texas Instruments TPS53126 Product Info

1 April 2026 4

Parameters

Rating

Catalog

Topology

Buck

Iout (max) (A)

15

Vin (max) (V)

24

Vin (min) (V)

4.5

Vout (max) (V)

5.5

Vout (min) (V)

0.76

Control mode

D-CAP2

Features

Enable, Prebias startup, Synchronous rectification

Duty cycle (max) (%)

89

Iq (typ) (A)

0.00045

Number of phases

1

Operating temperature range (°C)

-40 to 85

Package

TSSOP (PW)-24-49.92 mm² 7.8 x 6.4

Features

  • D-CAP2™ Mode Control
    • Fast Transient Response
    • No External Parts Required For Loop
      Compensation
    • Compatible with Ceramic Output Capacitors
  • High Initial Reference Accuracy (±1%)
  • Low Output Ripple
  • Wide Input Voltage Range: 4.5 V to 24 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Low-Side RDS(on) Loss-Less Current Sensing
  • Adaptive Gate Drivers with Integrated Boost Diode
  • Internal 1.2 ms Voltage-Servo Soft Start
  • Pre-Biased Soft Start
  • Selectable Switching Frequency: 350 kHz / 700
    kHz
  • Cycle-by-Cycle Over-Current Limiting Control
  • 30 mV to 300 mV OCP Threshold Voltage
  • Thermally Compensated OCP by 4000 ppm/C° at
    ITRIP
  • D-CAP2™ Mode Control
    • Fast Transient Response
    • No External Parts Required For Loop
      Compensation
    • Compatible with Ceramic Output Capacitors
  • High Initial Reference Accuracy (±1%)
  • Low Output Ripple
  • Wide Input Voltage Range: 4.5 V to 24 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Low-Side RDS(on) Loss-Less Current Sensing
  • Adaptive Gate Drivers with Integrated Boost Diode
  • Internal 1.2 ms Voltage-Servo Soft Start
  • Pre-Biased Soft Start
  • Selectable Switching Frequency: 350 kHz / 700
    kHz
  • Cycle-by-Cycle Over-Current Limiting Control
  • 30 mV to 300 mV OCP Threshold Voltage
  • Thermally Compensated OCP by 4000 ppm/C° at
    ITRIP

Description

The TPS53126 is a dual, adaptive on-time, D-CAP2™ mode synchronous Buck controller. The TPS53126 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low external component count, and low standby current solution. The main control loop for the TPS53126 uses the D-CAP2™ mode control which provides a very fast transient response with no external components. The TPS53126 also has a proprietary circuit that enables the device to adapt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device provides convenient and efficient operation with input voltages from 4.5 V to 24 V and output voltages from 0.76 V to 5.5 V.

The TPS53126 is available in 4mm × 4mm 24 pin VQFN (RGE) or 24 pin TSSOP (PW) packages and is specified from –40°C to 85°C ambient temperature range.

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