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LT3970 - 350mA Step-Down Regulator

Description

The LT®3970 is an adjustable frequency monolithic buck switching regulator that accepts a wide input voltage range up to 40V, and consumes only 2.5µA of quiescent current.

Features

  • n Low Ripple Burst Mode® Operation n 2.5µA IQ at 12VIN to 3.3VOUT n Output Ripple < 5mVP-P n Wide Input Voltage Range: 4.2V to 40V Operating n Adjustable Switching Frequency: 200kHz to 2.2MHz n Integrated Boost and Catch Diodes n 350mA Output Current n Fixed Output Voltages: 3.3V, 3.42V, 5V 1.8µA IQ at 12VIN n Accurate 1V Enable Pin Threshold n Low Shutdown Current: IQ = 0.7µA n Internal Sense Limits Catch Diode Current n Power Good Flag n Output Voltage: 1.21V to 25V n Internal Compensation n.

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Full PDF Text Transcription

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LT3970 Series 40V, 350mA Step-Down Regulator with 2.5µA Quiescent Current and Integrated Diodes FEATURES n Low Ripple Burst Mode® Operation n 2.5µA IQ at 12VIN to 3.3VOUT n Output Ripple < 5mVP-P n Wide Input Voltage Range: 4.2V to 40V Operating n Adjustable Switching Frequency: 200kHz to 2.2MHz n Integrated Boost and Catch Diodes n 350mA Output Current n Fixed Output Voltages: 3.3V, 3.42V, 5V 1.8µA IQ at 12VIN n Accurate 1V Enable Pin Threshold n Low Shutdown Current: IQ = 0.7µA n Internal Sense Limits Catch Diode Current n Power Good Flag n Output Voltage: 1.
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