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Product Detailed Parameters
- Description：IC REG BUCK 3.42V 350MA 10DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- 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)：3.42V
- 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-WFDFN Exposed Pad
- Supplier Device Package：10-DFN (3x2)
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Overview
The LT3970EDDB-3.42#TRMPBF is a micropower synchronous step-down DC/DC converter manufactured by Analog Devices Inc. It operates with an input voltage range of 4.2V to 40V and provides a fixed output voltage of 3.42V at up to 350mA. The device features a switch frequency adjustable from 200kHz to 2.2MHz and draws only 1.8µA in quiescent current. Packaged in a 10-lead DFN, it supports operation between -40°C and +125°C.
Feature Summary
- Integrates a 350mA power switch and synchronous rectification for high efficiency
- Features ultra-low quiescent current consumption for extended battery life
- Includes internal boost diode to support low output voltages
- Offers flexible switching frequency adjustment to optimize external component size
Applications
- Battery-powered portable instrumentation
- Industrial control systems
- Automotive electronics
- Point-of-load regulation modules
Procurement Notes
Verify the specific suffix #TRMPBF indicates tape and reel packaging when sourcing. Confirm the manufacturer is Analog Devices Inc. Ensure the part number matches the exact 3.42V output variant. Check RoHS compliance status via official documentation before integration.
Selection Notes
Select this component for applications requiring wide input voltage ranges and low standby power. The fixed 3.42V output eliminates the need for external feedback resistors. Consider the DFN package for space-constrained designs. Verify thermal performance requirements against the operating temperature range.
Part Context
This part belongs to the LT3970 family of micropower synchronous buck regulators. It shares core architecture with variants offering different fixed output voltages or packages. The series is designed for high-efficiency power conversion in compact form factors suitable for modern electronic devices.
Replacement Considerations
LT3970EDDB-3.3#TRMPBF offers a similar 3.42V class output profile but with a 3.3V nominal setting. LT3970IMS-5#PBF provides a 5V output in an MSOP package. Verify pin compatibility and thermal characteristics when substituting.
