TPS564255

ACTIVE

3-V to 17-V input voltage, 4-A OOA mode, synchronous buck converter with PG

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 3 Vin (max) (V) 17 Switching frequency (min) (kHz) 600 Switching frequency (max) (kHz) 600 Features Enable, Light Load Efficiency, Power good, Soft Start Fixed Control mode D-CAP Vout (min) (V) 0.6 Vout (max) (V) 10 Iq (typ) (µA) 100 Duty cycle (max) (%) 93
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 3 Vin (max) (V) 17 Switching frequency (min) (kHz) 600 Switching frequency (max) (kHz) 600 Features Enable, Light Load Efficiency, Power good, Soft Start Fixed Control mode D-CAP Vout (min) (V) 0.6 Vout (max) (V) 10 Iq (typ) (µA) 100 Duty cycle (max) (%) 93
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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Type Title Date
* Data sheet TPS56425x 3-V to 17-V Input, 4-A, Synchronous Buck Converters in SOT-563 Package datasheet (Rev. A) 05 May 2023
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
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 TPS564255EVM EU RoHS Declaration of Conformity (DoC) 28 Nov 2022
Application note Understanding OOA Operation Mode 15 Feb 2019

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