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TPS564257

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

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Data sheet

TPS564257

ACTIVE
Data sheet Order now

Product details

Iout (max) (A) 4 Vin (min) (V) 3 Vin (max) (V) 17 Type Converter Switching frequency (min) (kHz) 600 Switching frequency (max) (kHz) 600
Iout (max) (A) 4 Vin (min) (V) 3 Vin (max) (V) 17 Type Converter Switching frequency (min) (kHz) 600 Switching frequency (max) (kHz) 600
SOT-5X3 (DRL) 6 2.56 mm² 1.6 x 1.6
  • 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

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.

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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Technical documentation

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* Data sheet TPS56425x 3-V to 17-V Input, 4-A, Synchronous Buck Converters in SOT-563 Package datasheet (Rev. A) 05 May 2023
Application note How to Co-Layout Three Common SOT-563 Package Pinouts (Rev. A) PDF | HTML 25 Jan 2024
Application note How to do Co-Layout Between SOT-563 Package and SOT-236 Package (Rev. A) PDF | HTML 10 Jul 2023
EVM User's guide TPS564252, TPS564255, and TPS564257 Step-Down Converter Evaluation Module (Rev. A) PDF | HTML 01 May 2023
Certificate TPS564257EVM EU RoHS Declaration of Conformity (DoC) 28 Nov 2022

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS564257EVM — TPS564257 evaluation module for 4-A, FCCM mode, synchronous step-down converter

TPS564257 evaluation module (EVM) is a simple, easy-to-use, 4 A synchronous step-down converter in SOT563 package. TPS564257EVM is a fully assembled and tested circuit for evaluating the TPS564257 step-down converter. This EVM operates from 3 V to 16 V input, 12 V nominal, and provides a 1.05 V (...)
User guide: PDF | HTML
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Simulation model

TPS564257 PSpice Transient Model (Rev. A)

SLUM857A.ZIP (256 KB) - PSpice Model
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Package Pins Download
SOT-5X3 (DRL) 6 View options
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