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Product Detailed Parameters
- Description：IC REG BUCK 3.3V 1A 16MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：3.6V
- Voltage - Input (Max)：36V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Current - Output：1A
- Frequency - Switching：250kHz ~ 2.2MHz
- 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 LT3695IMSE-3.3#PBF is a micropower step-down switching regulator manufactured by Analog Devices Inc., housed in a 16-lead MSOP package with exposed pad. It operates from an input voltage range of 3.6V to 36V and provides a fixed 3.3V output at up to 1A load current. The device features a typical quiescent current of 35µA and supports adjustable switching frequencies between 250kHz and 2.2MHz. It functions within a temperature range of -40°C to +125°C.
Feature Summary
- Fault-tolerant operation allows the device to withstand short circuits on the output without damage.
- Micropower architecture ensures low standby power consumption suitable for battery-operated applications.
- Integrated synchronous rectification improves conversion efficiency across various load conditions.
Applications
- Portable instrumentation powered by single-cell lithium batteries
- Industrial control systems requiring isolated or non-isolated DC-DC conversion
- Automotive electronics operating within wide input voltage ranges
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and tube packaging when ordering. Confirm the IMSE variant matches the required thermal performance and pinout for your PCB layout. Cross-reference the datasheet revision to ensure compatibility with existing design files. Check availability status as supply may be limited for certain manufacturing lots.
Selection Notes
Select this component when a fixed 3.3V rail is needed from a high-voltage source up to 36V. The 1A output capability suits moderate load requirements without external pass transistors. Consider the MSOP-16 package constraints for thermal dissipation in compact designs. Evaluate the 250kHz to 2.2MHz frequency range against EMI requirements and inductor size preferences.
Part Context
This part belongs to the LT3695 family of fault-tolerant buck regulators designed for demanding environments. It shares architectural similarities with other ADI micropower converters but offers specific fault protection features. The IMSE package provides a balance between thermal performance and board space efficiency for surface-mount assembly.
Replacement Considerations
LT3695IMSE-5#PBF serves as a functional substitute if a 5V output is acceptable instead of 3.3V. Other members of the LT3695 series may replace this unit provided the output voltage and package type align with system requirements.
