LT1170HVCT#PBF

Overview

The LT1170HVCT#PBF is a monolithic high-power switching regulator from Analog Devices Inc. It operates with an input voltage range of 3 V to 60 V and delivers up to 5 A output current, supporting a maximum output power of 100 W. The device supports multiple topologies including buck, boost, flyback, forward, inverting, and Cuk configurations. It features a fixed switching frequency of 100 kHz and adjustable output voltage starting from 1.244 V. Packaged in a TO-220-5 (5+Tab) format, it integrates a high-current switch, oscillator, control circuitry, and protection mechanisms on a single die.

Feature Summary

• Integrates a high-current, high-efficiency power switch with complete oscillator, control, and protection circuitry on a single monolithic die.
• Supports versatile operation across all standard switching configurations, including buck, boost, flyback, forward, inverting, and Cuk topologies.
• Designed for high-power applications with integrated thermal management capabilities suitable for through-hole mounting.

Applications

• 5V/5A Boost Converter circuits
• 5V/5A High Efficiency Buck Converter designs
• Offline applications driving high-voltage FETs
• LCD contrast power supplies requiring negative voltage generation

Procurement Notes

Verify the specific suffix designation when sourcing components, as variations exist within the LT1170 family. Confirm that the requested part matches the exact pinout and thermal pad configuration required for your PCB layout. Cross-reference the manufacturer's latest datasheet to ensure compliance with current RoHS standards and environmental regulations before finalizing procurement orders.

Selection Notes

Select this component for designs requiring a single-chip solution for high-power DC-DC conversion across various topologies. It is suitable for applications needing robust internal protection and high efficiency without external discrete switching elements. Consider the TO-220 package for its thermal performance in space-constrained but high-power scenarios where through-hole assembly is preferred over surface-mount alternatives.

Part Context

The LT1170 series represents Analog Devices' high-power switching regulator line, designed for versatility in industrial and commercial power supplies. The HV variant specifically addresses higher input voltage requirements, extending the operational range beyond standard low-voltage regulators. This family allows engineers to implement complex power architectures using a unified control platform, simplifying design validation and supply chain management.

Replacement Considerations

LT1170HVCT#PBF