Product details

Vin (Min) (V) 3 Vin (Max) (V) 16 Vout (Min) (V) 0.6 Vout (Max) (V) 7 Iout (Max) (A) 4 Iq (Typ) (uA) 100 Switching frequency (Min) (kHz) 600 Switching frequency (Max) (kHz) 600 Features Enable, Forced PWM, Power Good, Soft Start Fixed Rating Catalog Regulated outputs (#) 1 Control mode D-CAP Duty cycle (Max) (%) 93
Vin (Min) (V) 3 Vin (Max) (V) 16 Vout (Min) (V) 0.6 Vout (Max) (V) 7 Iout (Max) (A) 4 Iq (Typ) (uA) 100 Switching frequency (Min) (kHz) 600 Switching frequency (Max) (kHz) 600 Features Enable, Forced PWM, Power Good, Soft Start Fixed Rating Catalog Regulated outputs (#) 1 Control mode D-CAP Duty cycle (Max) (%) 93
SOT-5X3 (DRL) 6
  • Configured for a wide range of applications
    • 3-V to 16-V input voltage range
    • 0.6-V to 7-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
  • Configured for a wide range of applications
    • 3-V to 16-V input voltage range
    • 0.6-V to 7-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

The TPS56425x is a simple, easy-to-use, high efficiency, high power density, synchronous buck converter with input voltage ranging from 3-V to 16-V and supports up to 4-A continuous current at output voltages between 0.6 V and 7 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 16-V and supports up to 4-A continuous current at output voltages between 0.6 V and 7 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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Type Title Date
* Data sheet TPS56425x 3-V to 16-V Input, 4-A Synchronous Buck Converters in SOT-563 Package datasheet PDF | HTML 28 Dec 2022
Application note How to do Co-Layout Among Three Types of SOT-563 Packages PDF | HTML 05 Jan 2023
EVM User's guide TPS564252, TPS564255, and TPS564257 Step-Down Converter Evaluation Module PDF | HTML 20 Dec 2022
Application note How to do Co-Layout between SOT-563 Package and SOT-236 Package PDF | HTML 16 Dec 2022
Certificate TPS564257EVM EU RoHS Declaration of Conformity (DoC) 28 Nov 2022
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019

Design & development

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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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PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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