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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)：60V
- Voltage - Output (Min/Fixed)：1.244V
- Voltage - Output (Max)：75V (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 LT1171HVCQ#TRPBF is a monolithic high-power switching regulator from Analog Devices Inc., designed for versatile DC-DC conversion applications. It supports input voltages ranging from 3V to 60V and delivers an output current of 2.5A with up to 100W output power. The device operates at a fixed switching frequency of 100kHz and features an adjustable output voltage range starting from 1.244V. Packaged in a tape-and-reel format within a DDPAK-5 (TO-263) surface-mount housing, it functions as a synchronous step-down or step-up converter. The component is rated for operation across a temperature range of -40°C to +100°C junction temperature.
Feature Summary
- Integrates a high-current, high-efficiency internal switch with complete oscillator, control, and protection circuitry on a single die.
- Supports multiple standard switching configurations including buck, boost, flyback, forward, inverting, and Cuk topologies.
- Features external current limiting capability for enhanced protection and flexible design implementation.
Applications
- Positive buck converter circuits
- Negative buck converter circuits
- Boost converter implementations
- Flyback converter designs
Procurement Notes
Verify the specific suffix #TRPBF confirms the tape-and-reel packaging variant rather than tube packaging when sourcing. Confirm the HVCQ designation indicates the high-voltage compatible grade suitable for the specified 60V input range. Ensure compatibility with the DDPAK-5 footprint during PCB layout verification.
Selection Notes
Select this component for designs requiring a wide input voltage range up to 60V with moderate output current needs. The integrated switch simplifies bill of materials by reducing external component count. Consider thermal management requirements due to the 100W power capability in the DDPAK package. Verify that the 100kHz switching frequency aligns with electromagnetic interference constraints.
Part Context
This part belongs to the LT1170/LT1171/LT1172 family of high-efficiency switching regulators. While sharing core architecture with the LT1170 and LT1172, the LT1171 specifically targets 2.5A output current applications. The HVCQ variant denotes high-voltage tolerance, distinguishing it from standard voltage versions within the same series.
Replacement Considerations
LT1171HVIT#PBF serves as a pin-compatible through-hole alternative in a TO-220-5 package. LT1171HVIQ#PBF offers the same electrical specifications in a tube-packaged DDPAK-5 form factor. Cross-reference datasheets to confirm identical pinout and thermal characteristics before substitution.
