LTC3633AEFE-1#TRPBF

Voltage Regulators - DC DC Switching Regulators Overview

The LTC3633AEFE-1#TRPBF is a synchronous step-down DC/DC controller featuring an integrated high-side N-channel power MOSFET. It operates from input voltages between 2.7V and 5.5V, delivering output currents up to 3A with adjustable switching frequencies from 300kHz to 2.2MHz. The device incorporates Power Path Management for battery charging applications, supporting single-cell Li-Ion/Li-Polymer batteries. Key electrical parameters include a quiescent current of 45µA during operation and 2µA in shutdown mode. Output voltage regulation is precise within 1% accuracy.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side N-channel power MOSFET eliminates external gate drive requirements
• Power Path Management enables simultaneous system power and battery charging
• Adjustable switching frequency allows optimization for efficiency or component size
• Low quiescent current design supports extended battery life in portable devices

Voltage Regulators - DC DC Switching Regulators Applications

• Smartphones and mobile phones
• Personal digital assistants (PDAs)
• Portable medical instruments
• GPS navigation systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix #TRPBF indicates tape and reel packaging with lead-free finish. Confirm the AEFE grade meets automotive temperature specifications if required. Ensure the order quantity matches the reel size specified in the distributor catalog. Cross-reference the manufacturer's latest datasheet for any pinout or functional revisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when input voltage is limited to 5.5V maximum and integrated MOSFET simplification is desired. Consider the fixed 1MHz frequency option if external inductor selection is constrained. Evaluate thermal performance based on PCB copper area and ambient conditions. Verify compatibility with single-cell battery charging profiles for target application.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to Analog Devices' LTC3633 family of synchronous buck controllers designed for low-voltage, high-current applications. The FE package denotes a thermally enhanced 20-lead QFN footprint suitable for space-constrained designs. The -1 suffix typically indicates a specific internal resistor network configuration for fixed output voltage settings.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements may include other Analog Devices synchronous buck controllers with similar input ranges and integrated MOSFETs. Verify pin-to-pin compatibility before substitution. Check if alternative parts support the same Power Path Management functionality. Ensure switching frequency ranges overlap with existing design constraints.