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Home > Embedded ICs > Embedded - Microcontroller Unit (MCU) > TPS54340BDDAR
Texas Instruments

TPS54340BDDAR

TPS54340BDDAR

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TPS54340BDDAR Overview

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Description

The TPS54340B is a42-V, 3.5-A, step-down regulator withan integrated high side MOSFET. Current mode control provides simple external compensation andflexible component selection. A low ripple pulse skip mode reduces the no-load supply current to146 μA. Shutdown supply current is reduced to 2 μA when the enable pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can be increased using the enablepin. The output voltage start-up ramp is internally controlled to provide a controlled start-up andeliminate overshoot.

A wide switching-frequency range allows either efficiency or external component size tobe optimized. Frequency foldback and thermal shutdown protect internal and external componentsduring an overload condition.

The TPS54340B is availablein an 8-pin thermally enhanced HSOIC PowerPAD?package.

Features

  • 4.5-Vto 42-V (45-V Abs Max)Input Range
  • 3.5-A Continuous Current, 4.5-A Minimum Peak Inductor CurrentLimit
  • Current Mode Control DC/DC Converter
  • 92-m? High-SideMOSFET
  • High Efficiency at Light Loads with Pulse SkippingEco-mode?
  • Low Dropout at Light Loads withIntegrated BOOT Recharge FET
  • 146-μA Operating QuiescentCurrent
  • 2-μA Shutdown Current
  • 100-kHz to 2.5-MHz FixedSwitching Frequency
  • Synchronizes to ExternalClock
  • Adjustable UVLO Voltage and Hysteresis
  • Internal SoftStart
  • Accurate Cycle-by-Cycle Current Limit
  • Thermal,Overvoltage, and Frequency Foldback Protection
  • 0.8 V 1% Internal VoltageReference
  • 8-Pin HSOIC with PowerPAD?Package
  • –40°C to 150°C TJ OperatingRange
  • Create a Custom Design using the TPS54340B with theWEBENCH?Power Designer

Specifications

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