LTC3787EGN#TRPBF | PolyPhase Synchronous Boost Controller | Wide VIN 4.5–38 V

Product Overview

     The LTC3787EGN#TRPBF is a high-performance PolyPhase® synchronous boost converter controller that drives two N-channel power MOSFET stages out of phase to achieve high efficiency and reduced input/output capacitance requirements. It provides a programmable switching frequency and supports operation over a wide input voltage range from 4.5 V to 38 V, enabling flexible design for high power boost applications. Synchronous rectification increases conversion efficiency and reduces thermal stress, making it suitable for automotive, industrial, and battery-powered systems that require efficient step-up voltage regulation.

Key Features

• PolyPhase® synchronous boost controller for high-efficiency step-up conversion
• Drives dual N-channel MOSFET out-of-phase for reduced component stress
• Wide input voltage range: 4.5 V – 38 V (40 V abs max)
• Programmable switching frequency: 50 kHz – 900 kHz
• Synchronous rectification for high efficiency and low power loss
• Low quiescent current (~135 µA)
• Enable, soft-start, power-good and current limit features
• Supports high output voltage up to ~60 V using external MOSFETs
• Low shutdown current (< 8 µA)
• Compact 28-pin SSOP surface-mount package
• Operating temperature: –40 °C to +125 °C

Applications

• High power boost converters in industrial systems
• Automotive DC/DC step-up supplies
• Battery-powered and energy storage systems
• Telecom and networking power rails
• Distributed power systems with high step-up ratios
• Portable applications requiring efficient voltage boosting

Electrical Characteristics