TPS54494RSAT

Voltage Regulators - DC DC Switching Regulators Overview

The TPS54494RSAT is a dual-channel synchronous step-down converter manufactured by Texas Instruments. It operates with an input voltage range of 4.5 V to 18 V and provides two adjustable output voltages between 760 mV and 7 V. Each channel supports up to 4 A of output current, utilizing a fixed 700 kHz switching frequency. The device features a low quiescent current of 15 uA and operates within a temperature range of -40°C to +85°C. It is housed in a 16-pin QFN package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual independent buck channels for simultaneous power rail generation
• Integrated synchronous rectification for high efficiency
• Fixed internal switching frequency simplifies external component selection
• Low standby current consumption for battery-powered applications

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial equipment requiring multiple regulated voltage rails
• Point-of-load regulation for digital logic circuits
• Embedded systems with single-supply architectures
• Communication infrastructure power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix RSAT corresponds to the 16-QFN package configuration during ordering. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure ESD handling protocols are followed due to the moisture sensitivity level associated with this surface-mount device type.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when dual isolated outputs are required from a single input source. Evaluate thermal performance based on the total 8 A combined current capability within the QFN footprint. Consider the 700 kHz frequency trade-off between component size and efficiency. Verify input voltage stability remains within the 4.5 V to 18 V operational window.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the TPS54494 family of dual-channel DC-DC converters. It shares core control architecture with variants like TPS54494PWPR but differs in packaging. The RSAT designation specifically identifies the lead-free QFN variant intended for high-density surface mount assembly processes.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

TPS54494PWPR offers identical electrical specifications in a PowerTSSOP package. Cross-reference pinouts carefully as package dimensions differ significantly between QFN and HTSSOP form factors.