TPS54334DRCT Part Information

Details for TPS54334DRCT by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

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Part Description

The TPS54334 is a 28-V, 3-A, low quiescent supply current (IQ), synchronous monolithic buck converter with integrated MOSFETs. The TPS54334 enables small designs by integrating the MOSFETs and implementing current mode control to reduce external component count. Efficiency is maximized through the integrated 128mΩ/84mΩ MOSFETs, low quiescent supply current and pulse skipping at light loads. Using the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode. The TPS54334 provides accurate regulation for a variety of loads with an accurate 1.5% voltage reference over temperature. Cycle by cycle current limiting on the high-side fet protects the TPS54334 in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. There is also a low-side sinking current limit which turns off the low-side MOSFET to prevent excessive reverse current. Hiccup protection will be triggered if the overcurrent condition has persisted for longer than the preset time. Thermal hiccup protection disables the part when die temperature exceeds thermal shutdown temperature and enables the part again after the built-in thermal hiccup time.

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Part Features

  • 0.8 V Internal Voltage Reference with u00b11.5% Accuracy Over Temperature
  • Available in Easy-to-Use 8-Pin SOIC PowerPADu2122 and 10-Pin SON
  • Fixed-Frequency Current Mode Control
  • Low 2 u00b5A Shutdown Quiescent Current
  • Monotonic Start-Up into Pre-biased Outputs
  • Overcurrent Protection for Both MOSFETs with Hiccup Mode for Severe Fault Conditions
  • Power Good
  • Pulse Skipping Boosts Efficiency at Light Loads
  • Thermal and Overvoltage Transient Protection
  • Two 128mu03a9/84mu03a9 MOSFETs for 3A Continuous Output Current

Part Specifications

Topology Synchronous Buck (Step Down)
Input Voltage Min 4.2V
Input Voltage Max 28V
No. of Outputs 1Outputs
DC / DC Converter IC Case VSON
No. of Pins 10Pins
Output Current 3A
Output Voltage Min 800mV
Output Voltage Max 24V
Switching Frequency 570kHz
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 2 - 1 year
SVHC No SVHC (27-Jun-2018)
RoHS Compliant

Alternative Part Descriptions

  • DC/DC CONV, SYNC BUCK, 570KHZ, VSON-10; Topology:Synchronous Buck (Step Down); Input Voltage Min:4.2V; Input Voltage Max:28V; No. of Outputs:1Outputs; DC / DC Converter IC Case:VSON; No. of Pins:10Pins; Output Current:3A; Output RoHS Compliant: Yes | Newark Electronics
  • 4.2V to 28V Input voltage, 3A Output current Synchronous buck Converter with 570kHz fixed frequency | Texas Instruments

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