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Product Detailed Parameters
- Description：IC REG BCK BST ADJ 1.25A DDPAK-5
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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：Surface Mount
- Package / Case：TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Supplier Device Package：DDPAK-5
- Grade：-
- Qualification：-
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Overview
The LT1172CQ#TRPBF is a monolithic high-power switching regulator manufactured by Analog Devices Inc. It operates within 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 typical quiescent current of 6 mA. The component is housed in a DDPAK-5 surface-mount package and functions reliably across an operating temperature range from 0°C to +100°C.
Feature Summary
- Integrates a high-current, high-efficiency power switch with complete oscillator, control, and protection circuitry on a single die.
- Capable of operation in all standard switching configurations, including buck, boost, flyback, forward, inverting, and Cuk topologies.
- Designed for high efficiency performance within a wide input voltage range.
Applications
- Positive buck converter circuits
- Forward converter designs
- General-purpose DC to DC power supply systems
Procurement Notes
Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm availability status as distribution channels may list limited stock or special order requirements. Ensure the DDPAK-5 package footprint matches the target PCB layout. Validate RoHS compliance documentation prior to final procurement decisions.
Selection Notes
Select this component for applications requiring versatile topology support and high input voltage tolerance up to 60 V. The integrated switch eliminates external transistor requirements, simplifying design complexity. Consider the 1.25 A output limit and 100 kHz switching frequency when determining thermal management needs and passive component sizes for the intended power level.
Part Context
This part belongs to the LT1172 series of monolithic high-power switching regulators. The family includes variants such as LT1172CN8 and LT1172HVCT, which share core functional characteristics but differ in package types and specific operational ratings. The series is characterized by its ability to function across diverse standard switching configurations while maintaining high efficiency.
Replacement Considerations
LT1172CQ#PBF is a verified substitute offering identical electrical specifications and functionality. Both parts utilize the DDPAK-5 package and support the same multi-topology operations. Verify that the reel versus tube packaging difference does not impact the assembly process before substitution.
