LTC3633AIFE-1#TRPBF

Voltage Regulators - DC DC Switching Regulators Overview

The LTC3633AIFE-1#TRPBF is a dual-channel monolithic synchronous step-down regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3.6 V to 20 V and provides two adjustable output voltages between 1.5 V and 12 V. Each channel delivers up to 3 A of output current. The device features a fixed switching frequency of 4 MHz, resulting in a total operating frequency range of 500 kHz to 4 MHz. It utilizes a 28-TSSOP-EP package and supports a shutdown function. The quiescent current is specified at 500 uA, and the load regulation is rated at 0.05%. The component functions within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates two independent synchronous buck converters in a single compact package for space-constrained designs.
• Supports high-frequency operation up to 4 MHz to minimize external passive component size.
• Includes a dedicated shutdown pin to reduce power consumption during standby modes.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable equipment requiring multiple low-voltage rails from a higher bus voltage
• Industrial control systems needing efficient DC-DC conversion
• Embedded computing platforms utilizing single-input multi-output power architectures

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix #TRPBF confirms tape-and-reel packaging rather than tube packaging when sourcing. Confirm the -1 suffix indicates the correct output voltage configuration for your design requirements. Ensure compatibility with the 28-TSSOP-EP thermal pad footprint during PCB layout. Cross-reference the manufacturer's latest datasheet for any recent material or epoxy changes that may affect long-term reliability.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a dual-output solution is required from a single input source within the 3.6 V to 20 V range. The 4 MHz switching frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Ensure the thermal design accommodates the TSSOP-EP package for adequate heat dissipation at full 3 A loads. Verify that the 1.5 V minimum output voltage meets the lowest rail requirement of the target system.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LTC3633A series of dual-channel synchronous buck regulators. It shares core topology and performance characteristics with other variants in the family, such as the LTC3633AIFE-3#PBF, which differs primarily in output voltage specifications. The series is designed for applications requiring high efficiency and compact power solutions in portable and industrial electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LTC3633AIFE-3#PBF serves as a functional substitute within the same series, offering identical dual-channel architecture and package type but with different output voltage ranges. Designers must verify that the alternative part's voltage limits align with their specific circuit requirements before substitution.