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Product Detailed Parameters
- Description：IC REG BUCK ADJ 350MA 16MSOP
- 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：16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Supplier Device Package：16-MSOP-EP
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Overview
The LT3990EMSE#TRPBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range from 4.2V to 62V and provides a single adjustable output voltage between 1.21V and 25V. The device delivers up to 350mA of output current and features an adjustable switching frequency ranging from 210kHz to 2.3MHz. It utilizes a 16-TFSOP package with an exposed pad for thermal management and supports operation across a junction temperature range of -40°C to 125°C.
Feature Summary
- Supports wide input voltage ranges up to 62V for flexible power supply integration
- Features low quiescent current consumption to enhance efficiency in battery-powered applications
- Includes adjustable switching frequency to optimize external component size and performance
- Integrates under-voltage lockout for reliable startup and shutdown protection
Applications
- Industrial control systems requiring high-voltage step-down conversion
- Battery-operated equipment needing extended runtime through low standby current
- Embedded systems utilizing adjustable frequency for EMI optimization
- Automotive electronics compatible with wide input voltage variations
Procurement Notes
Verify the exact part number suffix TRPBF indicates tape and reel packaging when ordering. Confirm the manufacturer is Analog Devices Inc. to ensure authenticity. Check the datasheet for specific thermal requirements associated with the exposed pad design. Ensure compatibility with the intended operating temperature range before finalizing procurement decisions.
Selection Notes
Select this component when a wide input voltage range up to 62V is required. Choose it for applications demanding low quiescent current to preserve battery life. Consider the adjustable frequency feature if minimizing passive component size is critical. Ensure the load current does not exceed 350mA and the output voltage falls within the specified adjustable range.
Part Context
This part belongs to the LT3990 family of synchronous buck regulators designed for high-voltage, low-current applications. It shares core architecture with other variants in the series but differs in packaging and specific electrical characteristics. The EMSE designation refers to the specific MSOP-16 package variant suitable for surface-mount assembly.
Replacement Considerations
Consult official Analog Devices documentation for verified substitute part numbers. Cross-reference pinouts and electrical specifications carefully. Ensure any replacement maintains the same input voltage range and output current capabilities.
