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Product Detailed Parameters
- Description：IC REG BUCK 3.3V 350MA 10MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：4.2V
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Current - Output：350mA
- Frequency - Switching：200kHz ~ 2.25MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°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 LT3970EMS-3.3#PBF is a monolithic buck switching regulator from Analog Devices Inc., housed in a 10-MSOP package with an exposed pad. It operates with an input voltage range of 8.5V to 16V and provides a fixed 3.3V output at up to 350mA. The device features an adjustable switching frequency between 200kHz and 2.25MHz, enabling optimization for efficiency or component size. It consumes only 2.5µA of quiescent current during standby mode.
Feature Summary
- Integrates a high-voltage switch capable of handling wide input voltage ranges up to 40V.
- Features ultra-low quiescent current consumption to maximize battery life in portable applications.
- Includes internal soft-start functionality to limit inrush current during startup.
Applications
- Battery-powered portable equipment requiring low standby power
- Industrial control systems with wide input voltage variations
- Distributed power supply architectures
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence before procurement. Confirm the EMS package variant matches your PCB footprint requirements. Ensure the fixed 3.3V output aligns with load specifications, as this part does not support external adjustment. Check for any recent manufacturing changes or material declarations via official distributor channels.
Selection Notes
Select this component when a fixed 3.3V rail is required with minimal external component count. It is suitable for designs prioritizing low quiescent current over maximum output current. Consider the 10-MSOP package constraints for thermal management. If higher output current or adjustable voltage is needed, evaluate alternative parts within the LT3970 family or related regulators.
Part Context
This part belongs to the LT3970 family of high-efficiency, low-noise step-down DC/DC converters. These devices are designed for applications demanding small solution sizes and high performance. The LT3970 series offers various output voltage options and package types to suit diverse design needs while maintaining consistent electrical characteristics across the family.
Replacement Considerations
Direct substitutes include other LT3970 variants with different fixed output voltages, such as LT3970EMS-5#PBF for 5V output. For adjustable output requirements, consider LT3970IMS#PBF. Verify pin compatibility and thermal performance when substituting packages like MSOP with TSSOP or DFN variants.
