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TPS564257
  • TPS564257
  • TPS564257

TPS564257

ACTIVE

3-V to 17-V input voltage, 4-A FCCM mode, synchronous buck converter

Texas Instruments TPS564257 Product Info

1 April 2026 4

Parameters

Rating

Catalog

Topology

Buck

Iout (max) (A)

4

Vin (max) (V)

17

Vin (min) (V)

3

Vout (max) (V)

10

Vout (min) (V)

0.6

Features

Enable, Forced PWM, Power good, Soft Start Fixed

Control mode

D-CAP

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.0001

Duty cycle (max) (%)

93

Package

SOT-5X3 (DRL)-6-2.56 mm² 1.6 x 1.6

Features

  • Configured for a wide range of applications
    • 3-V to 17-V input voltage range
    • 0.6-V to 10-V output voltage range
    • 0.6-V reference voltage
    • ±1% reference accuracy at 25°C
    • ±1.5% reference accuracy at –40°C to 125°C
    • Integrated 55.0-mΩ and 24.3-mΩ MOSFETs
    • 100-µA low quiescent current
    • 600-kHz switching frequency
    • Maximum 97% large duty cycle operation
    • Precision EN threshold voltage
    • 1.6-ms fixed typical soft-start time
  • Ease of use and small solution size
    • TPS564252 Eco-mode, TPS564257 FCCM mode, TPS564255 OOA mode at light loading
    • D-CAP3™ control mode
    • Easy layout with integrated bootstrap capacitor
    • Support start-up with prebiased output
    • Open-drain power-good indicator
    • Non-latch for OV, OT, and UVLO protection
    • Hiccup mode for UV protection
    • Cycle-by-cycle OC and NOC protection
    • 1.6-mm × 1.6-mm SOT-563 package
  • Create a custom design using the TPS564252 with the WEBENCH Power Designer
  • Create a custom design using the TPS564255 with the WEBENCH Power Designer
  • Create a custom design using the TPS564257 with the WEBENCH Power Designer
  • Configured for a wide range of applications
    • 3-V to 17-V input voltage range
    • 0.6-V to 10-V output voltage range
    • 0.6-V reference voltage
    • ±1% reference accuracy at 25°C
    • ±1.5% reference accuracy at –40°C to 125°C
    • Integrated 55.0-mΩ and 24.3-mΩ MOSFETs
    • 100-µA low quiescent current
    • 600-kHz switching frequency
    • Maximum 97% large duty cycle operation
    • Precision EN threshold voltage
    • 1.6-ms fixed typical soft-start time
  • Ease of use and small solution size
    • TPS564252 Eco-mode, TPS564257 FCCM mode, TPS564255 OOA mode at light loading
    • D-CAP3™ control mode
    • Easy layout with integrated bootstrap capacitor
    • Support start-up with prebiased output
    • Open-drain power-good indicator
    • Non-latch for OV, OT, and UVLO protection
    • Hiccup mode for UV protection
    • Cycle-by-cycle OC and NOC protection
    • 1.6-mm × 1.6-mm SOT-563 package
  • Create a custom design using the TPS564252 with the WEBENCH Power Designer
  • Create a custom design using the TPS564255 with the WEBENCH Power Designer
  • Create a custom design using the TPS564257 with the WEBENCH Power Designer

Description

The TPS56425x is a simple, easy-to-use, high efficiency, high power density, synchronous buck converter with input voltage ranging from 3 V to 17 V and supports up to 4-A continuous current at output voltages between 0.6 V and 10 V.

The TPS56425x employs D-CAP3 control mode to provide a fast transient response and to support low-ESR output capacitors with no requirement for external compensation. The device can support up to 97% duty cycle operation. Integrated bootstrap capacitor helps achieve single layer PCB and can save total BOM cost.

The TPS564252 operates in Eco-mode, which maintains high efficiency during light loading. The TPS564257 operates in FCCM mode, which keeps the same frequency and lower output ripple during all load conditions. The TPS564255 operates in OOA mode, which prevents audio noise generation. The device integrates complete protection through OVP, OCP, UVLO, OTP, and UVP with hiccup.

The device is available in 1.6 mm × 1.6 mm SOT-563 package. The junction temperature is specified from –40°C to 125°C.

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