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Product Detailed Parameters
- Description：IC REG BCK BST ADJ 1.25A TO220-5
- 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：0°C ~ 100°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-220-5
- Supplier Device Package：TO-220-5
- Grade：-
- Qualification：-
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Overview
The LT1172CT#PBF is a monolithic high-power switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3 V to 60 V and provides an adjustable output voltage with a maximum output current of 1.25 A. The device supports multiple topologies including buck, boost, flyback, forward, inverting, and Cuk configurations. It features a fixed switching frequency of 100 kHz and a quiescent current of 6 mA. The component is housed in an SOIC-16 package and is rated for operation between 0°C and +100°C.
Feature Summary
- Monolithic integration of high-current switch, oscillator, control circuitry, and protection mechanisms on a single die.
- Versatile topology support enabling operation in standard switching configurations such as buck, boost, flyback, forward, inverting, and Cuk.
- High efficiency performance characterized by integrated high-current switching capability.
Applications
- 5V/1.25A Forward Converter
- 1.25A High Efficiency Constant Current Charger
- 5V/1.25A High Efficiency Buck Converter
Procurement Notes
Verify the specific suffix CT against the official Analog Devices datasheet to confirm package type and temperature rating. Ensure compatibility with the required thermal management for the SOIC-16 package. Cross-reference the manufacturer part number LT1172CT#PBF with authorized distributors to confirm current availability and authenticity. Check for any recent product change notifications regarding pinout or electrical characteristics.
Selection Notes
Select this component when a versatile, high-power switching solution is required across various DC-DC topologies. The wide input voltage range up to 60 V suits applications with varying supply conditions. The 1.25 A output current capability makes it suitable for moderate power levels. Consider the 100 kHz switching frequency for balancing component size and efficiency. Verify that the operating temperature range meets the environmental requirements of the target application.
Part Context
The LT1172 series comprises monolithic high-power switching regulators designed for flexibility and efficiency. The LT1172CT#PBF represents a specific variant within this family, distinguished by its commercial temperature grade and SOIC-16 packaging. This series integrates all necessary control and protection functions, reducing external component count compared to discrete solutions.
Replacement Considerations
Consult the Analog Devices LT1172 datasheet for direct pin-to-pin compatible alternatives within the same family, such as LT1172CN8 or LT1172IS8, depending on required temperature range and package style.
