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LT3971-3.3 - 2MHz Step-Down Regulator

Download the LT3971-3.3 datasheet PDF. This datasheet also covers the LT3971 variant, as both devices belong to the same 2mhz step-down regulator family and are provided as variant models within a single manufacturer datasheet.

Description

The LT®3971 is an adjustable frequency monolithic buck switching regulator that accepts a wide input voltage range up to 38V.

Low quiescent current design consumes only 2.8µA of supply current while regulating with no load.

Features

  • n Ultralow Quiescent Current: 2.8µA IQ Regulating 12VIN to 3.3VOUT n Fixed Output Voltages: 3.3V, 5V, 2.1µA IQ Regulating 12VIN to 3.3VOUT n Low Ripple Burst Mode® Operation: Output Ripple < 15mVP-P n Wide Input Voltage Range: 4.3V to 38V n 1.2A Maximum Output Current n Adjustable Switching Frequency: 200kHz to 2MHz n Synchronizable Between 250kHz to 2MHz n Fast Transient Response n Accurate 1V Enable Pin Threshold n Low Shutdown Current: IQ = 700nA n Power Good Flag n Soft-Start Cap.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LT3971_LinearTechnology.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
LT3971 2MHz Step-Down Regulator Linear Technology
LT3970 350mA Step-Down Regulator Linear Technology
LT3970-3.3 350mA Step-Down Regulator Linear Technology
LT3970-3.42 350mA Step-Down Regulator Analog Devices
LT3970-5 350mA Step-Down Regulator Linear Technology

Other Datasheets by Linear Technology (Analog Devices)

Part Number Description
LT3971-5 2MHz Step-Down Regulator
LT3971A Step-Down Regulator
LT3971A-5 Step-Down Regulator
LT3973 Step-Down Regulator
LT3973-3.3 Step-Down Regulator

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
FEATURES n Ultralow Quiescent Current: 2.8µA IQ Regulating 12VIN to 3.3VOUT n Fixed Output Voltages: 3.3V, 5V, 2.1µA IQ Regulating 12VIN to 3.3VOUT n Low Ripple Burst Mode® Operation: Output Ripple < 15mVP-P n Wide Input Voltage Range: 4.3V to 38V n 1.2A Maximum Output Current n Adjustable Switching Frequency: 200kHz to 2MHz n Synchronizable Between 250kHz to 2MHz n Fast Transient Response n Accurate 1V Enable Pin Threshold n Low Shutdown Current: IQ = 700nA n Power Good Flag n Soft-Start Capability n Internal Compensation n Output Voltage: 1.19V to 30V n Small Thermally Enhanced 10-Lead MSOP, 16-Lead MSOP and (3mm × 3mm) DFN Packages APPLICATIONS n Automotive Battery Regulation n Power for Portable Products n Industrial Supplies LT3971/LT3971-3.3/LT3971-5 38V, 1.
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