TPS54061 Step-Down DC-DC Converter

TPS54061 Step-Down DC-DC Converter

Texas Instruments' TPS54061 device is a 60 V, 200 mA, synchronous step-down DC-DC converter with integrated high side and low side MOSFETs. Current mode control provides simple external compensation and flexible component selection. The non-switching supply current is 90 µA. Using the enable pin, shutdown supply current is reduced to 1.4 µA. To increase light load efficiency, the low side MOSFET emulates a diode when the inductor current reaches zero. Under voltage lockout is internally set at 4.5 V, but can be increased using two resistors on the enable pin.

Features
  • Integrated high side and low side MOSFET
  • Diode emulation for improved light load efficiency
  • Peak current mode control
  • 90 µA operating quiescent current
  • 1.4 µA shutdown supply current
Applications
  • 4 mA to 20 mA current-loop powered sensors
  • Low power standby or bias voltage supplies
  • Industrial process control, metering, and security systems
  • High efficiency replacement for high voltage linear regulators

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