LT3091IDE#PBF

Introduction

The LT3091IDE#PBF is an integrated high voltage flyback voltage regulator from Linear Technology. It integrates all of the components of a linear regulator, including the high and low voltage amplifier, rectifier and current sense components, to provide a low-cost, reliable solution to regulating a flyback power supply.

Applications

The LT3091IDE#PBF is designed for use in applications such as high voltage lighting controls and LED drivers, automotive and medical instrumentation, and power supplies up to 12 watts. It is suitable for use in applications such as power stairwell lighting and emerging sensor-based lighting controls and APIs.

Features

The LT3091IDE#PBF includes a wide range of features including: a unique triple comparator architecture that provides independent current sense, voltage sense and regulation threshold monitoring; a single-cycle internal voltage trip for fast current limit; a wide range of current limit voltages and trip points; error amplifier performance of greater than 40 dB; over-temperature protection and fault status reporting; and adjustable turn-on/off levels for smooth startup.

Working Principle

The LT3091IDE#PBF operates by monitoring the output voltage and sensing current draw to ensure that the voltage remains within a set range. The integrated voltage regulator will then adjust the output current to maintain the proper output voltage. The integrated current limit circuit begins to reduce the output current if the current draw exceeds the maximum allowable current. The current limit voltage is adjustable via an external resistor. The Integrated circuit can also look for fault conditions and report them back to the system.

Conclusion

The LT3091IDE#PBF is an integrated high voltage flyback voltage regulator designed for use in applications such as high voltage lighting controls and LED drivers, automotive and medical instrumentation, and power supplies up to 12 watts. It includes a wide range of features including current and voltage sensing, adjustable turn-on/off levels, and over-temperature protection. It operates by monitoring the output voltage and adjusting the output current to maintain the proper output voltage.