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Product Detailed Parameters
- Description：IC REG BUCK ADJ 350MA 16MSOP
- 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)：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 ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Supplier Device Package：16-MSOP-EP
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Overview
The LT3990HMSE#TRPBF is a monolithic buck switching regulator from Analog Devices, housed in a 16-lead MSOP package with an exposed pad. It supports an input voltage range of 4V to 62V and delivers up to 350mA output current. The device features adjustable switching frequencies up to 2.3MHz and ultra-low quiescent current consumption of 2.5µA. Operating temperatures span from -40°C to +125°C.
Feature Summary
- Ultra-low quiescent current consumption for extended battery life
- Wide input voltage range supporting high-voltage sources
- Adjustable switching frequency for optimization of external component size
- Integrated bootstrap diode simplifies circuit design
Applications
- Battery-powered instrumentation systems
- Industrial process control power supplies
- Automotive electronics requiring wide input ranges
- Portable test equipment
Procurement Notes
Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm the exact operating temperature grade matches your environmental requirements. Ensure the 16-lead MSOP footprint aligns with your PCB layout constraints. Cross-reference the datasheet for any recent manufacturing changes or material declarations.
Selection Notes
Select this part for applications requiring high input voltages up to 62V with minimal standby power draw. The adjustable frequency allows trade-offs between efficiency and passive component size. Consider thermal performance due to the small package size under load. Verify that the required output voltage falls within the supported regulation range.
Part Context
This component belongs to the LT3990 family of high-voltage step-down converters. It shares core architecture with other variants like the LT3990EMSE but differs in packaging and reel configuration. The HMSE designation specifies the commercial/industrial temperature range and MSOP form factor.
Replacement Considerations
LT3990EMSE#TRPBF offers identical electrical specifications with equivalent pinout compatibility. LT3990HMSE#PBF provides the same functionality in tube packaging instead of tape-and-reel. Verify thermal resistance differences if transitioning between packaging types.
