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Product Detailed Parameters
- Description：IC REG BUCK ADJ 700MA 16MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：3.6V
- Voltage - Input (Max)：36V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：36V
- Current - Output：700mA
- Frequency - Switching：500kHz ~ 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 LT3689IMSE#PBF is a synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3.4 V to 38 V and delivers a fixed 5 V output at up to 700 mA. The device integrates a power-on reset generator and a watchdog timer for system protection. It functions within a temperature range of -40°C to +125°C and utilizes a 16-lead MSOP package.
Feature Summary
- Integrates a power-on reset generator and a watchdog timer for enhanced system reliability
- Synchronous buck topology provides efficient step-down conversion from high input voltages
- Operates over an extended industrial temperature range suitable for demanding environments
Applications
- Industrial control systems requiring robust power management
- Embedded systems needing integrated fault protection features
- High-voltage input applications converting to standard logic levels
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence. Confirm the MSOP-16 package dimensions match your PCB footprint requirements. Ensure the fixed 5V output aligns with your load specifications, as this variant does not offer adjustable voltage options.
Selection Notes
Select this component when a fixed 5V rail is required alongside integrated reset and watchdog functionalities. It is suitable for designs where board space is limited but system reliability features are critical. Consider the 700mA current limit against peak load demands to ensure adequate headroom.
Part Context
This part belongs to the LT3689 family of synchronous buck regulators. Unlike the LT3680 which offers adjustable output and higher current, the LT3689 focuses on lower current applications with added supervisory features. It serves as a compact solution for systems needing clean power from higher voltage sources.
Replacement Considerations
Direct replacements may include other Analog Devices synchronous buck regulators with similar current ratings and package types. Verify pin compatibility and electrical parameters before substitution. Cross-reference datasheets for equivalent reset and watchdog configurations.
