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TPS51386

ACTIVE

4.5-V to 24-V input, 8-A synchronous buck converter 

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Data sheet

TPS51386

ACTIVE
Data sheet Order now

Product details

Rating Catalog Topology Buck Iout (max) (A) 8 Vin (max) (V) 24 Vin (min) (V) 4.5 Vout (max) (V) 5.5 Vout (min) (V) 0.6 Features Adjustable soft start, Enable, Light-load efficiency, Overcurrent protection, Power good, Prebias startup, UVLO fixed Control mode D-CAP3 Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000084 Duty cycle (max) (%) 88.6 Sector Test & measurement
Rating Catalog Topology Buck Iout (max) (A) 8 Vin (max) (V) 24 Vin (min) (V) 4.5 Vout (max) (V) 5.5 Vout (min) (V) 0.6 Features Adjustable soft start, Enable, Light-load efficiency, Overcurrent protection, Power good, Prebias startup, UVLO fixed Control mode D-CAP3 Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000084 Duty cycle (max) (%) 88.6 Sector Test & measurement
VQFN-HR (RJN) 12 6 mm² (3 mm × 2 mm)
  • 4.5-V to 24-V input voltage range
  • 0.6-V to 5.5-V output voltage range
  • Integrated 22-mΩ and 11-mΩ MOSFETs
  • Support 8-A continuous I OUT
  • 84-µA low quiescent current
  • ±1% reference voltage (0.6 V) at 25°C
  • ±1.5% reference voltage (0.6 V) at –40°C to 125°C
  • 600-kHz switching frequency
  • D-CAP3™ control mode for fast transient response
  • Supports POSCAP and all MLCC output capacitor
  • Adjustable soft start and internal 1-ms soft start
  • Selectable PSM and Out-of-Audio™ (OOA) mode under light load and supports on-the-fly change
  • Large duty operation support
  • Power-good indicator to monitor output voltage
  • Latched output OV and UV protection
  • Non-latched UVLO and OT protection
  • Cycle-by-cycle overcurrent protection
  • Built-in output discharge feature
  • Small 2.00-mm × 3.00-mm HotRod™ QFN package
  • 4.5-V to 24-V input voltage range
  • 0.6-V to 5.5-V output voltage range
  • Integrated 22-mΩ and 11-mΩ MOSFETs
  • Support 8-A continuous I OUT
  • 84-µA low quiescent current
  • ±1% reference voltage (0.6 V) at 25°C
  • ±1.5% reference voltage (0.6 V) at –40°C to 125°C
  • 600-kHz switching frequency
  • D-CAP3™ control mode for fast transient response
  • Supports POSCAP and all MLCC output capacitor
  • Adjustable soft start and internal 1-ms soft start
  • Selectable PSM and Out-of-Audio™ (OOA) mode under light load and supports on-the-fly change
  • Large duty operation support
  • Power-good indicator to monitor output voltage
  • Latched output OV and UV protection
  • Non-latched UVLO and OT protection
  • Cycle-by-cycle overcurrent protection
  • Built-in output discharge feature
  • Small 2.00-mm × 3.00-mm HotRod™ QFN package

The TPS51386 is a monolithic, 8-A, synchronous buck converter with adaptive on-time D-CAP3 control mode. Integrated low R DS(on) power MOSFETs enable high efficiency and offer ease-of-use with minimum external component count for space-constrained power systems. Features include an accurate reference voltage, fast load transient response, auto-skip mode operation for light load efficiency, OOA light load operation with > 25-kHz switching frequency, D-CAP3 control mode with good line, load regulation, and does not require external compensation.

The TPS51386 provides complete protection OVP, UVP, OCP, OTP, and UVLO. The device is a combined power-good signal and output discharge function.

The TPS51386 supports both internal and external soft-start time option. The device has the internal fixed soft-start time 1 ms. If the application needs longer soft-start time, the external SS pin can be used to achieve longer soft-start time by connecting the external capacitor.

The TPS51386 are available in a thermally enhanced 12-pin QFN package and are designed to operate from –40°C to 125°C junction temperature.

The TPS51386 is a monolithic, 8-A, synchronous buck converter with adaptive on-time D-CAP3 control mode. Integrated low R DS(on) power MOSFETs enable high efficiency and offer ease-of-use with minimum external component count for space-constrained power systems. Features include an accurate reference voltage, fast load transient response, auto-skip mode operation for light load efficiency, OOA light load operation with > 25-kHz switching frequency, D-CAP3 control mode with good line, load regulation, and does not require external compensation.

The TPS51386 provides complete protection OVP, UVP, OCP, OTP, and UVLO. The device is a combined power-good signal and output discharge function.

The TPS51386 supports both internal and external soft-start time option. The device has the internal fixed soft-start time 1 ms. If the application needs longer soft-start time, the external SS pin can be used to achieve longer soft-start time by connecting the external capacitor.

The TPS51386 are available in a thermally enhanced 12-pin QFN package and are designed to operate from –40°C to 125°C junction temperature.
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Technical documentation

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* Data sheet TPS51386 4.5-V to 24-V Input, 8-A Synchronous Buck Converter With Latched OVP/UVP, Adjustable Soft Start, and PSM/OOA Modes datasheet PDF | HTML Aug 21, 2023
Application brief Suggested DC/DC Converters and PMIC for Powering DDR5, LPDDR5, and LPDDR5X Memory PDF | HTML Feb 17, 2026
Application note D-CAP2 and D-CAP3 Loop Analysis With Hybrid Output Capacitors PDF | HTML Dec 22, 2023
Application note Non-Isolated DC/DC Designs for Raptor Lake in Notebook Computing Applications PDF | HTML Aug 16, 2023
Certificate TPS51386EVM EU RoHS Declaration of Conformity (DoC) Aug 18, 2022

Design & development

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Evaluation board

TPS51386EVM — 4.5-V to 24-V input, 8-A synchronous step-down converter evaluation module

The TPS51386 is a single, D-CAP3™ mode, synchronous buck converter requiring a very low external component count. TPS51386 provides an adjustable 0.6 V to 5.5 V 8 A maximum output. Integrated low RDS(ON) power MOSFETs enable high efficiency and offer ease of use with a minimal external (...)

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Simulation model

TPS51386 PSPICE Model

SLUM842.ZIP (401 KB) - PSpice model
Supported products & hardware
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VQFN-HR (RJN) 12 Ultra Librarian
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