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Product Detailed Parameters
- Description：IC REG BUCK ADJ 350MA 10MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- 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#PBF is a monolithic buck switching regulator from Analog Devices Inc. It accepts an input voltage range of 4.2V to 40V and delivers up to 350mA output current. The device features adjustable switching frequency from 200kHz to 2.25MHz and consumes only 2.5µA quiescent current. It operates within a junction temperature range of -40°C to +125°C. The component is housed in a 10-lead MSOP package measuring 3mm x 3mm x 0.86mm.
Feature Summary
- Adjustable switching frequency allows optimization for efficiency or external component size
- Ultra-low quiescent current consumption enhances battery life in portable applications
- Wide input voltage range supports various power supply architectures
Applications
- Battery-powered instrumentation
- Portable medical devices
- Industrial control systems
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and RoHS status. Confirm the MSOP package variant matches design constraints. Check manufacturer documentation for latest revision history and application notes related to thermal management in small packages.
Selection Notes
Select this part when low static current is critical alongside moderate output current requirements. Ensure the chosen switching frequency aligns with available inductor values. Verify that the 40V maximum input rating exceeds peak line voltages in the target system.
Part Context
This component belongs to the LT3970 family of high-voltage step-down converters. It shares core architecture with variants like LT3970IMS#PBF but differs in package type. The family targets applications requiring wide input ranges and low standby power consumption.
Replacement Considerations
LT3970IMS#PBF offers identical electrical performance in a different package. LT3970EMS#PBF provides alternative packaging options. Verify pinout compatibility and thermal characteristics before substitution.
