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Product Detailed Parameters
- Description：IC REG BUCK BST ADJ 1.25A 8PDIP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Up, Step-Down, Step-Up/Step-Down
- Output Configuration：Positive or Negative
- Topology：Buck, Boost, Cuk, Flyback, Forward Converter
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：3V
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：1.244V
- Voltage - Output (Max)：65V (Switch)
- Current - Output：1.25A (Switch)
- Frequency - Switching：100kHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 100°C (TJ)
- Mounting Type：Through Hole
- Package / Case：8-DIP (0.300", 7.62mm)
- Supplier Device Package：8-PDIP
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Overview
The LT1172IN8#PBF is a monolithic high-power switching regulator manufactured by Analog Devices Inc. It integrates a high-current, high-efficiency switch with all necessary oscillator, control, and protection circuitry on a single die. The device supports an input voltage range of 3V to 60V and delivers an output current of 1.25A with up to 100W output power. It operates at a switching frequency of 100kHz and is available in an 8-pin Narrow SOIC package.
Feature Summary
- Monolithic integration of high-current switch and control circuitry
- Supports multiple standard switching topologies including buck, boost, flyback, forward, inverting, and Cuk
- Wide input voltage capability for diverse power supply applications
Applications
- High efficiency 5V buck converter circuits
- Negative boost regulator configurations
- Forward converter designs
- Flyback and inverting power supplies
Procurement Notes
Verify the specific suffix IN8 corresponds to the industrial temperature grade and narrow SOIC package when sourcing. Confirm that the #PBF designation indicates lead-free compliance. Cross-reference the manufacturer datasheet for exact thermal characteristics and pinout definitions before finalizing procurement specifications.
Selection Notes
Select this component for applications requiring a versatile, high-power switching regulator capable of operating across various topologies. Ensure the design accommodates the 100kHz switching frequency and the 1.25A output current limit. Verify that the input voltage range of 3V to 60V aligns with the system's power source requirements.
Part Context
The LT1172 series represents a family of high-performance switching regulators designed for flexibility in power conversion architectures. The IN8 variant specifically denotes the industrial temperature range version housed in a compact 8-pin narrow SOIC package, suitable for space-constrained designs requiring robust performance.
Replacement Considerations
Check for direct pin-compatible alternatives within the same product family or from other manufacturers offering similar topology support and current ratings. Ensure thermal management solutions are compatible if substituting with components having different package thermal resistances.
