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Product Detailed Parameters
- Description：IC REG BUCK 3.3V 350MA 16MSOP
- 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)：62V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- 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-3.3#TRPBF is a monolithic buck switching regulator manufactured by Analog Devices Inc., housed in a 16-TFSOP package with an exposed pad. It provides a fixed output voltage of 3.3V at a maximum current of 350mA. The device accepts an input voltage range from 4.2V to 62V and features an adjustable switching frequency between 210kHz and 2.3MHz. It operates within a junction temperature range of -40°C to 125°C and consumes only 2.5µA of quiescent current.
Feature Summary
- Accepts wide input voltage range up to 62V
- Adjustable switching frequency for optimization
- Ultra-low quiescent current consumption
- Fixed 3.3V output configuration
Applications
- 3.3V step-down converter designs
- High voltage input power systems
- Battery-powered equipment requiring low standby current
- Industrial control power supplies
Procurement Notes
Verify the complete part number including the suffix #TRPBF to ensure correct tape and reel packaging. Confirm the HMSE grade matches required thermal and electrical specifications. Cross-reference the manufacturer's latest datasheet for any recent pinout or material declaration updates before finalizing procurement orders.
Selection Notes
Select this component when a fixed 3.3V output is required from high input voltages up to 62V. The adjustable frequency feature allows designers to optimize for efficiency or external component size. Ensure the application load does not exceed the 350mA continuous output current limit and that the operating temperature remains within the specified industrial range.
Part Context
This part belongs to the LT3990 family of synchronous buck regulators designed for high-voltage applications. The 'H' indicates a specific temperature grade, while 'MSE' denotes the 16-lead MSOP package with an exposed pad for thermal management. The '#TRPBF' suffix specifies the lead-free tape and reel packaging format for automated assembly.
Replacement Considerations
LT3990EMSE-3.3#TRPBF: Same function with different temperature grade. LT3990IMSE-3.3#TRPBF: Same function with different temperature grade. Verify pin compatibility and thermal performance differences before substitution.
