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Product Detailed Parameters
- Description：IC REG BUCK BST ADJ 2.5A DDPAK-5
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- 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：2.5A (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 LT1171CQ#TRPBF is a monolithic high-power switching regulator manufactured by Analog Devices Inc. It supports Buck, Boost, Cuk, Flyback, and Forward converter topologies with adjustable output voltage ranging from 1.244V to 65V (switch). The device delivers up to 2.5A switch current with an input voltage range of 3V to 40V. Operating at a fixed 100kHz switching frequency, it features positive or negative output configuration in a TO-263-6 (D2PAK) package. The junction temperature range is 0°C to 100°C.
Feature Summary
- Supports multiple DC-DC conversion topologies including Buck, Boost, Cuk, Flyback, and Forward configurations.
- Provides adjustable output voltage capability for flexible power supply design.
- Integrates high-current switching capability suitable for demanding power applications.
Applications
- LCD contrast power supplies
- General-purpose DC-DC conversion systems
- Embedded power management circuits
Procurement Notes
Verify the specific suffix #TRPBF indicates tape-and-reel packaging versus the standard tube variant #PBF. Confirm the component status remains active as distribution data may vary. Ensure the ordering suffix matches the required packaging format for automated assembly processes. Cross-reference the manufacturer part number with distributor catalogs to confirm availability and lead times prior to procurement.
Selection Notes
Select this component when designing circuits requiring versatile topology support such as Buck, Boost, or Inverting configurations. The 2.5A current rating suits moderate power applications. Consider the D2PAK package for thermal performance. Verify that the 3V to 40V input range aligns with the system power source. Ensure the 100kHz frequency meets EMI requirements for the target application environment.
Part Context
The LT1171 series represents a family of high-efficiency switching regulators from Analog Devices. The LT1171CQ#TRPBF is a specific variant within this line, distinguished by its commercial temperature grade and tape-and-reel packaging. It shares core architectural features with other LT1171 models but differs in packaging and temperature specifications.
Replacement Considerations
LT1171IQ#PBF is documented as a parameter-equivalent substitute. Verify pin compatibility and electrical specifications before substitution. Ensure the replacement part meets the same thermal and packaging requirements for the design.
