4.5-V to 18-V, synchronous buck controller with advanced sequencing and output margining


Product details


Vin (Min) (V) 4.5 Vin (Max) (V) 18 Vout (Min) (V) 0.69 Vout (Max) (V) 5.5 Iout (Max) (A) 20 Iq (Typ) (uA) 1800 Switching frequency (Min) (kHz) 100 Switching frequency (Max) (kHz) 1000 Features Dynamic Voltage Scaling, Frequency Synchronization, Power Good, Remote Sense, Synchronous Rectification, Tracking Operating temperature range (C) -40 to 85 Regulated outputs (#) 1 Number of phases 1 Rating Catalog open-in-new Find other Buck controllers (external switch)

Package | Pins | Size

VQFN (RGE) 24 16 mm² 4 x 4 open-in-new Find other Buck controllers (external switch)


  • Operation over 4.5 V to 18 V Input Range
  • 100 kHz to 1 MHz Voltage Mode Control
  • Output Voltage Range From 0.69 V to 5.5 V
  • Simultaneous, Ratiometric and Sequential Startup Sequencing
  • Remote Sensing (Via Separate GND/PGND)
  • 24-Pin QFN Package
  • Thermal Shutdown
  • Programmable Overcurrent Protection
  • Power Good Indicator
  • 1%, 690-mV Reference
  • Output Margining, 3% and 5%
  • Programmable UVLO and Hysteresis
  • Frequency Synchronization
    • Servers
    • Networking Equipment
    • Telecommunications Equipment
    • Power Supply Modules

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The TPS40101 is a wide-input synchronous, step-down controller that offers programmable closed loop soft-start, programmable UVLO and hysteresis, programmable current limit with hiccup recovery and can be synchronized to other timebases. The TPS40101 incorporates MOSFET gate drivers for external N-channel MOSFETs. Gate drive logic incorporates adaptive anti-cross conduction circuitry for improved efficiency, reducing diode conduction in the rectifier MOSFET.

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Technical documentation

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Type Title Date
* Data sheet Midrange Input Synchronous Buck Controller With Advanced Sequencing and Output M datasheet Sep. 28, 2006
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018

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VQFN (RGE) 24 View options

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