TPS54061QDRBRQ1

• Qualified for Automotive Applications

• AEC-Q100 Qualified With the Following Results:

  – Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range

  – Device HBM ESD Classification Level H2

  – Device CDM ESD Classification Level C3B

• Integrated High-Side and Low-Side MOSFETs

• Diode Emulation for Light-Load Efficiency

• Peak-Current Mode Control

• 90-µA Operating Quiescent Current

• 1.4-µA Shutdown Supply Current

• 50-kHz to 1.1-MHz Adjustable Switching Frequency

• Synchronizes to External Clock

• 0.8 V ±1% Voltage Reference

• Stable With Ceramic Output Capacitors or LowCost Aluminum Electrolytic

• Cycle-by-Cycle Current Limit, Thermal, OVP, and Frequency Foldback Protection

• 3-mm x 3-mm, 8-Pin SON Package With Thermal Pad

• –40°C to 150°C Operating Junction Temperature

Applications

• Low-Power Standby or Bias Voltage Supplies

• High-Efficiency Replacement for High-Voltage Linear Regulators

Description


The TPS54061-Q1 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 reduces the shutdown supply current to 1.4 μA.
To increase light-load efficiency,the low-side MOSFET emulates a diode when the inductor current reaches zer0.
The internal undervoltage lockout setting is 4.5 V, but using two resistors on the enable pin can increase the setting. The internal slow-start time controls the output-voltage start-up ramp.
The adjustable switching-frequency range allows optimization of efficiency and external component size. Frequency foldback and thermal shutdown protect the part during an overload condition.
The TPS54061-Q1enables smal designs by integrating the MOSFETs and boot recharge diode, and by minimizing the IC footprint with a small 3-mm ×3-mm thermally-enhanced SON package.
The TPS54061-Q1 is supported in the WEBENCHm Designer at www.ti.com.

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