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TPS51383

ACTIVE

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

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Data sheet

TPS51383

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) 3.36 Vout (min) (V) 3.36 Features Enable, Fixed Output, Light-load efficiency, Overcurrent protection, Power good, Prebias startup, Soft-start fixed, UVLO Fixed Control mode D-CAP3 Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00008 Duty cycle (max) (%) 97
Rating Catalog Topology Buck Iout (max) (A) 8 Vin (max) (V) 24 Vin (min) (V) 4.5 Vout (max) (V) 3.36 Vout (min) (V) 3.36 Features Enable, Fixed Output, Light-load efficiency, Overcurrent protection, Power good, Prebias startup, Soft-start fixed, UVLO Fixed Control mode D-CAP3 Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00008 Duty cycle (max) (%) 97
VQFN-HR (RJN) 12 6 mm² 3 x 2
  • 4.5-V to 24-V input voltage range
  • 3.36-V output voltage (TPS51383)
  • 3.3-V, 100-mA LDO with switch over (TPS51383)
  • 1.82-V output voltage (TPS51384)
  • 1.8-V, 100-mA LDO with switch over (TPS51384)
  • Integrated 22-mΩ and 11-mΩ MOSFETs
  • Support 8-A continuous IOUT
  • 80-µA low quiescent current
  • ±1% reference voltage at 25°C
  • ±1.5% reference voltage at -40°C to 125°C
  • D-CAP3™ control mode for fast transient response
  • Support POSCAP and all MLCC output capacitor
  • Output discharge function
  • Selectable PSM and OOA mode under light load
  • 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
  • 3.36-V output voltage (TPS51383)
  • 3.3-V, 100-mA LDO with switch over (TPS51383)
  • 1.82-V output voltage (TPS51384)
  • 1.8-V, 100-mA LDO with switch over (TPS51384)
  • Integrated 22-mΩ and 11-mΩ MOSFETs
  • Support 8-A continuous IOUT
  • 80-µA low quiescent current
  • ±1% reference voltage at 25°C
  • ±1.5% reference voltage at -40°C to 125°C
  • D-CAP3™ control mode for fast transient response
  • Support POSCAP and all MLCC output capacitor
  • Output discharge function
  • Selectable PSM and OOA mode under light load
  • 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 TPS51383 and TPS51384 are monolithic 8-A synchronous buck converters with adaptive on-time D-CAP3 control mode. Integrated low RDS(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 TPS51383 provides a fixed 3.36-V 8-AMAX output and a 3.3-V, 100-mAMAX LDO output with switch-over functionality. The TPS51384 provides a fixed 1.82-V 8-AMAX output and a 1.8-V, 100-mAMAX LDO with switch-over functionality. Both the TPS51383 and TPS51384 have ultra-low quiescent current function for long battery life in system standby mode.

The TPS5138x are available in a thermally enhanced 12-pin QFN package and are designed to operate from –40°C to 125°C junction temperature.

The TPS51383 and TPS51384 are monolithic 8-A synchronous buck converters with adaptive on-time D-CAP3 control mode. Integrated low RDS(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 TPS51383 provides a fixed 3.36-V 8-AMAX output and a 3.3-V, 100-mAMAX LDO output with switch-over functionality. The TPS51384 provides a fixed 1.82-V 8-AMAX output and a 1.8-V, 100-mAMAX LDO with switch-over functionality. Both the TPS51383 and TPS51384 have ultra-low quiescent current function for long battery life in system standby mode.

The TPS5138x 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 TPS51383 and TPS51384 4.5-V to 24-V Input, 8-A Synchronous Buck Converters With 100-mA LDO PSM/OOA Modes datasheet PDF | HTML 06 Sep 2022
Application note D-CAP2 and D-CAP3 Loop Analysis With Hybrid Output Capacitors PDF | HTML 22 Dec 2023
Application note Non-Isolated DC/DC Designs for Raptor Lake in Notebook Computing Applications PDF | HTML 16 Aug 2023
Certificate TPS51383EVM EU RoHS Declaration of Conformity (DoC) 18 Aug 2022

Design & development

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Evaluation board

TPS51383EVM — 4.5-V to 24-V input, 8-A synchronous step-down converter evaluation module

The TPS51383 and TPS51384 are the single, D-CAP3™ mode, synchronous buck converters requiring a very low external component count. The TPS51383 provides a fixed 3.36-V 8-A maximum output along with a separate 3.3-V, 100-mA maximum LDO. The TPS51384 provides a fixed 1.82-V 8-A maximum output along (...)
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Simulation model

TPS51383 PSPICE Model

SLUM843.ZIP (215 KB) - PSpice Model
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VQFN-HR (RJN) 12 Ultra Librarian
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