LT1372CS8#PBF

Overview

The LT1372CS8#PBF is a monolithic high-frequency switching regulator from Analog Devices Inc., housed in an 8-pin SOIC package. It supports multiple topologies including boost, buck, Cuk, flyback, forward, and SEPIC configurations. The device features a 1.5A internal switch, operates with an input voltage range of 2.7V to 30V, and delivers an adjustable output up to 35V. With a fixed 500kHz switching frequency, it enables the use of small external components. The IC includes integrated oscillator, control, and protection circuitry for efficient DC-DC conversion.

Feature Summary

• Supports versatile standard switching configurations including boost, buck, Cuk, flyback, forward, and SEPIC topologies
• Integrates a high-efficiency 1.5A power switch with complete oscillator and control circuitry on a single die
• Enables compact designs through high-frequency operation allowing for minimal external component size

Applications

• Boost converter applications such as 5V to 12V step-up regulation
• SEPIC converters for battery-powered systems like 2-cell Li-Ion to 5V or 3-cell to 3.3V
• Cuk converters requiring low ripple inversion, such as 5V to -3V generation
• Space-constrained systems utilizing all surface-mount solutions

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout and electrical characteristics match your design requirements. Ensure the 8-SOIC package dimensions align with your PCB footprint constraints. Cross-reference the datasheet revision history for any updates to thermal performance or marking information before finalizing procurement orders.

Selection Notes

Select this component when a single IC must support multiple converter topologies without changing parts. It is suitable for designs requiring an input range spanning 2.7V to 30V and needing up to 1.5A of switch current. Consider its 500kHz frequency for balancing efficiency and passive component size. Verify that the required output voltage does not exceed the 35V switch limit.

Part Context

This part belongs to the LT1372 family of monolithic high-frequency switching regulators. It shares core architecture with variants like LT1372IS8#PBF but differs in temperature grade and packaging specifications. The CS8 designation indicates a commercial temperature range variant in an 8-pin SOIC package, distinct from industrial or military options within the broader product line.

Replacement Considerations

LT1372IS8#PBF is a verified alternative offering similar functionality in the same package type but with extended temperature range capabilities.