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TPS54061
SLVSBB7E – MAY 2012 –...
Product Folder
Sample & Buy
Technical Documents
Tools & Software
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TPS54061
SLVSBB7E – MAY 2012 – REVISED NOVEMBER 2015
TPS54061 Wide Input 60-V, 200-mA Synchronous Step-Down DC-DC Converter With Low IQ
1 Features
1 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 50-kHz to 1100-kHz Adjustable Switching
Frequency Synchronizes to External Clock Internal Slow-Start 0.8 V ±1% Voltage Reference Stable With Ceramic Output Capacitors or Low-
Cost Aluminum Electrolytic Cycle-by-Cycle Current Limit, Thermal, OVP and
Frequency Foldback Protection VSON-8 Package, 3 mm × 3 mm With Thermal
Pad –40°C to 150°C Operating Junction Temperature
2 Applications
4 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
3 Description
The 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....