LT1579CS-3.3#TRPBF

Battery Management Overview

The LT1579CS-3.3#TRPBF is a dual-input, single-output low dropout regulator manufactured by Analog Devices Inc. It provides a fixed 3.3V output with a maximum current of 300mA. The device accepts an input voltage range from 2.7V to 20V and features a typical dropout voltage of 400mV. It offers high power supply rejection ratio (PSRR) of 70dB and operates within a temperature range of 0°C to +125°C. The part is housed in a 16-lead SOIC package and includes internal circuitry for smooth automatic switching between two independent input sources.

Battery Management Feature Summary

• Dual-input architecture designed for uninterruptible output voltage from two independent sources
• Integrated automatic switching circuitry ensures smooth transitions between inputs
• Low dropout performance supporting operation with minimal voltage difference
• High power supply rejection ratio for effective noise filtering

Battery Management Applications

• Smart battery backup systems requiring seamless source switching
• Applications demanding uninterrupted power from multiple input sources
• Systems prioritizing one input while maintaining backup capability
• Portable electronics utilizing dual power supply configurations

Battery Management Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm that the manufacturer designation matches Analog Devices Inc. to ensure authenticity. Check RoHS compliance status as required by project specifications. Ensure the operating temperature range meets the environmental requirements of the target application before finalizing procurement decisions.

Battery Management Selection Notes

Select this regulator when dual-input redundancy is required for critical loads. The fixed 3.3V output suits digital logic and microcontroller supplies. Consider the 300mA current limit for load capacity planning. The wide input range allows compatibility with various battery or primary supply voltages. Evaluate thermal dissipation needs based on the dropout voltage and load current conditions.

Battery Management Part Context

This component belongs to the LT1579 series of smart battery backup regulators. It is distinct from standard LDOs due to its dual-input priority switching functionality. The part integrates protection features and control logic typically found in dedicated power management ICs. It serves as a solution for maintaining system uptime during input source failures.

Battery Management FAQ

How does the LT1579 handle switching between two input sources?

The device incorporates internal circuitry that automatically and smoothly switches between the two inputs based on priority, ensuring no interruption to the output voltage.

What is the maximum output current capability of this regulator?

The LT1579CS-3.3#TRPBF supports a maximum output current of 300mA.