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Product Detailed Parameters
- Description：IC REG BUCK ADJ 350MA 10DFN
- 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)：62V
- Voltage - Output (Min/Fixed)：1.21V
- Voltage - Output (Max)：25V
- Current - Output：350mA
- Frequency - Switching：210kHz ~ 2.3MHz
- 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 (3x3)
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Overview
The LT3990IDD#TRPBF is a monolithic buck switching regulator from Analog Devices Inc. It accepts an input voltage range of 4.2V to 62V and delivers up to 350mA output current. The device features adjustable switching frequency and consumes only 2.5µA of quiescent current. It utilizes a DFN-10 package and operates within a temperature range of -40°C to +125°C.
Feature Summary
- Integrates internal power switches and synchronous rectification diodes for high efficiency
- Supports adjustable switching frequencies to optimize external component size
- Maintains ultra-low quiescent current during standby operations
Applications
- Battery-powered portable instrumentation
- Industrial control systems with wide input ranges
- Automotive electronics requiring high voltage tolerance
Procurement Notes
Verify the specific suffix IDD#TRPBF against official Analog Devices documentation to confirm the DFN-10 package and tape-and-reel delivery format. Ensure compatibility with required thermal management solutions for the operating environment. Cross-reference part numbers carefully as suffixes define critical physical and packaging attributes.
Selection Notes
Select this component when designing circuits requiring a wide input voltage span up to 62V with minimal standby power consumption. The integrated synchronous design reduces external component count compared to non-synchronous alternatives. Evaluate thermal performance requirements based on the DFN-10 package limitations under maximum load conditions.
Part Context
This part belongs to the LT3990 family of step-down regulators designed for high-voltage, low-quiescent-current applications. The series emphasizes efficiency and compactness by integrating necessary power stages. It serves as a solution for systems needing reliable regulation from varying or high-voltage sources.
Replacement Considerations
LT3990EMSE-5#PBF offers similar electrical characteristics in an MSOP-16 package. Verify pinout compatibility and thermal dissipation differences before substitution.
