LT1172HVCQ#PBF

Overview

The LT1172HVCQ#PBF is a high-efficiency switching voltage regulator from Analog Devices, designed for versatile DC-DC conversion applications. It supports multiple topologies including Buck, Boost, Cuk, Flyback, Forward, and Inverting configurations. The device operates with an input voltage range of 3 V to 60 V and delivers an adjustable output voltage starting from 1.244 V up to the input limit. It features a fixed switching frequency of 100 kHz and provides an output current capability of 1.25 A. The component functions within a temperature range of -40°C to +100°C and utilizes a DDPAK-5 surface-mount package.

Feature Summary

• Supports comprehensive switching converter topologies including Buck, Boost, Cuk, Flyback, Forward, and Inverting circuits.
• Operates over a wide input voltage range from 3 V to 60 V with adjustable output capabilities.
• Maintains high efficiency through optimized internal switching architecture at 100 kHz frequency.

Applications

• Buck and Boost converter designs requiring wide input voltage tolerance
• Inverting power supply circuits for negative rail generation
• Flyback and Forward isolated converter implementations
• Cuk converter applications for specific voltage inversion requirements

Procurement Notes

Verify the exact suffix against official Analog Devices documentation to confirm thermal grade and packaging specifications. Ensure the DDPAK-5 footprint matches the target PCB layout. Confirm RoHS compliance status via the manufacturer's latest datasheet revision. Cross-reference the part number with authorized distributors to avoid counterfeit components. Validate that the selected variant meets the required operating temperature range for the intended application environment.

Selection Notes

Select this component when a single IC must support multiple converter topologies such as Buck, Boost, or Inverting configurations. It is suitable for designs requiring a wide input voltage range up to 60 V. Consider the 1.25 A output current limit and 100 kHz switching frequency for inductor and capacitor selection. Ensure the thermal performance of the DDPAK-5 package aligns with the system's heat dissipation constraints.

Part Context

The LT1172 series represents a family of high-power monolithic switching regulators known for their flexibility across various standard converter topologies. The HVCQ designation indicates a specific thermal and electrical grade within the LT1172 lineup, optimized for robust operation in demanding industrial environments. This part integrates the necessary control logic and power switches to simplify design complexity compared to discrete solutions.

Replacement Considerations

LT1172HVIQ#PBF is a documented substitute within the same product family offering similar functional characteristics and topology support.