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Product Detailed Parameters
- Description：IC REG BUCK ADJ 350MA 10DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- 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 ~ 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 LT3970IDDB#TRPBF is a monolithic buck switching regulator from Analog Devices, housed in a 10-lead DFN package. It accepts an input voltage range of 4.2V to 40V and delivers up to 350mA output current. The device features an adjustable switching frequency from 200kHz to 2.2MHz and consumes only 1.8µA of quiescent current. It includes a 2.5A quick charge capability and integrates internal diodes for efficient step-down conversion.
Feature Summary
- Adjustable switching frequency allows optimization for efficiency or component size
- Ultra-low quiescent current supports extended battery life in portable applications
- Integrated high-current switch and synchronous rectification simplify design
Applications
- Battery-powered portable equipment
- Industrial control systems
- Automotive electronics
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the IDDB package variant matches your PCB footprint requirements. Check current availability status as supply may be limited. Ensure the operating temperature range meets your environmental specifications before finalizing procurement.
Selection Notes
Select this part for designs requiring wide input voltage tolerance and low standby power consumption. The adjustable frequency feature enables flexibility in external component selection. Consider thermal performance within the DFN package for high-load applications. Verify that the 350mA output current aligns with the target load requirements.
Part Context
This component belongs to the LT3970 family of high-efficiency buck regulators. It shares core architecture with other variants like the LT3970EMS and LT3970IMS, differing primarily in package type and pinout configuration. The IDDB package offers a compact solution suitable for space-constrained designs requiring robust power management capabilities.
Replacement Considerations
LT3970EMS-5#TRPBF: Similar electrical characteristics but in MSOP-10 package; verify pin compatibility. LT3970IMS#PBF: Available in TFSOP/MSOP packages; check thermal dissipation differences.
