TPS55340 Switching Regulator



Texas Instruments' integrated 5 A, 40 V, wide input range boost/SEPIC/flyback DC-DC Regulator


Texas Instruments TPS55340 Switching Regulator Texas Instruments' TPS55340 is a monolithic non-synchronous switching regulator with integrated 5 A, 40 V power switch. It can be configured in several standard switching-regulator topologies, including boost, SEPIC and isolated flyback. The device has a wide input voltage range to support applications with input voltage from multi-cell batteries or regulated 3.3 V, 5 V, 12 V, and 24 V power rails. The TPS55340 regulates the output voltage with current mode PWM (pulse width modulation) control, and has an internal oscillator. The switching frequency of PWM is set by either an external resistor or by synchronizing to an external clock signal. The user can program the switching frequency from 100 kHz to 1.2 MHz.   TPS55340 Datasheet

  Features   Applications
  • Internal 5 A, 40 V low-side MOSFET switch
  • 2.9 V to 32 V input voltage range
  • ±0.7% reference voltage
  • 0.5 mA Operating Quiescent Current
  • 2.7 µA shutdown supply current
  • 3.3 V, 5 V, 12 V, 24 V power conversion
  • Boost, SEPIC, and flyback topologies
  • Thunderbolt port
  • Power docking for tablets and portable PCs
  • Industrial power systems
  • ADSL modems

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Texas Instruments
Part Number
Digi-Key
Part Number
Packaging Description  
TPS55340RTET 296-30530-2-ND Tape & Reel IC REG BST FLYBACK ADJ 5A 16WQFN TPS55340 Datasheet
296-30530-1-ND Cut Tape
296-30530-6-ND Digi-Reel®