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Product Detailed Parameters
- Description：IC REG BUCK ADJ 350MA 10MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：4.2V
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：1.21V
- Voltage - Output (Max)：25V
- Current - Output：350mA
- Frequency - Switching：200kHz ~ 2.25MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Supplier Device Package：10-MSOP
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Overview
The LT3970HMS#TRPBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It accepts an input voltage range from 4.2V to 40V and delivers up to 350mA of output current. The device features an adjustable switching frequency ranging from 200kHz to 2.25MHz, allowing for optimization of efficiency and component size. It operates with a low quiescent current of 2.5µA and supports an output voltage range from 1.21V to 25V. The component is housed in a 10-lead MSOP package and is rated for operation between -40°C and 125°C.
Feature Summary
- Integrates a high-voltage switch capable of handling wide input voltage ranges up to 40V
- Features adjustable switching frequency to optimize performance across various load conditions
- Provides ultra-low quiescent current consumption for enhanced battery life in standby modes
Applications
- Battery-powered portable equipment requiring extended runtime
- Industrial control systems with wide input voltage variations
- Distributed power supply architectures in embedded applications
Procurement Notes
Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing components. Confirm that the manufacturer designation matches Analog Devices Inc. to ensure authenticity. Check RoHS compliance status against current regulatory requirements for your region. Ensure the operating temperature range meets the environmental specifications of the final assembly.
Selection Notes
Select this regulator when designing circuits that require a wide input voltage range combined with low static current consumption. The adjustable frequency feature allows designers to balance electromagnetic interference (EMI) concerns against passive component size. Consider the thermal performance of the MSOP package for high ambient temperature environments.
Part Context
The LT3970 belongs to a family of high-voltage buck regulators designed for efficiency and compactness. It serves as a solution for applications where standard low-voltage regulators cannot accommodate higher input rails. The device integrates necessary protection features and control logic into a small footprint.
Replacement Considerations
LT3970IMS#PBF
FAQ
What is the minimum output voltage supported by the LT3970?
The minimum adjustable output voltage for the LT3970 is 1.21V.
Does the LT3970 include internal soft-start functionality?
Yes, the LT3970 includes an internal soft-start feature to limit inrush current during startup.
