Texas Instruments TPS54061-Q1

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 zero.

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-Q1 enables small designs by integrating the MOSFETs and boot recharge diode, and by minimizing the IC footprint with a small 3-mm × 3-mm thermally enhanced VSON package.

Features

• 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 Low-Cost Aluminum Electrolytic
• Cycle-by-Cycle Current Limit, Thermal, OVP and Frequency Foldback Protection
• 3-mm × 3-mm With Thermal Pad
• –40°C to 150°C Operating Junction Temperature

Typical applications

• High-Efficiency Replacement for High-Voltage Linear Regulators
• Low-Power Standby or Bias Voltage Supplies

More information

• Datasheet
• IC product information