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Product Detailed Parameters
- Description：IC REG BUCK BOOST ADJ DL 20TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Up, Step-Down, Step-Up/Step-Down
- Output Configuration：Positive or Negative
- Topology：Buck, Boost, Flyback, SEPIC
- Output Type：Adjustable
- Number of Outputs：2
- Voltage - Input (Min)：2.6V
- Voltage - Input (Max)：50V
- Voltage - Output (Min/Fixed)：2.6V
- Voltage - Output (Max)：50V (Switch)
- Current - Output：1.35A (Switch), 2.1A (Switch)
- Frequency - Switching：100kHz ~ 2MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：20-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：20-TSSOP-EP
- Grade：-
- Qualification：-
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Overview
The LT8471IFE#PBF is a dual PWM DC/DC converter featuring two internal 2A, 50V switches and an additional 500mA switch. It supports multiple topologies including step-down, inverting, boost, and SEPIC configurations. The device operates with an input voltage range of 2.6V to 50V. Output voltages are adjustable from 0.789V to 50V. It provides dual outputs with current capabilities of 2A per main switch. The component is housed in a 20-pin TSSOP EP package and is qualified for automotive applications.
Feature Summary
- Dual multitopology DC/DC converter architecture supporting buck, boost, inverting, and SEPIC modes
- Integrated high-current switching capability with two 2A and one 500mA internal switches
- Programmable undervoltage lockout (UVLO) and overvoltage lockout (OVLO) thresholds
- Automotive-grade qualification ensuring reliability in vehicle environments
Applications
- Automotive power distribution systems
- Industrial control circuits requiring multiple voltage rails
- Battery-powered equipment with wide input voltage variations
- Inverter and converter stages in electric vehicle subsystems
Procurement Notes
Verify the specific suffix #PBF indicates tube packaging when reviewing distributor listings. Confirm that the automotive grade designation aligns with your system's environmental requirements. Ensure the 20-pin TSSOP EP footprint matches your PCB layout constraints. Cross-reference the manufacturer's latest datasheet revision to confirm pinout compatibility before finalizing procurement orders.
Selection Notes
Select this component when designing systems requiring independent positive and negative output rails from a single wide-range input source. The dual switch architecture allows for complex topology combinations within a single package. Consider the thermal performance of the exposed pad package for high-current applications. Verify that the programmable UVLO/OVLO features meet the specific protection requirements of the target application circuit.
Part Context
The LT8471 belongs to Analog Devices' portfolio of high-performance analog integrated circuits designed for power management. It complements other dual-channel converters by offering flexible multitopology support. The part is commonly used alongside passive components to create efficient power conversion stages. Its automotive qualification distinguishes it from standard industrial variants in the same family.
Replacement Considerations
Direct substitutes may include other dual-channel DC/DC converters from Analog Devices with similar current ratings. Verify pin-to-pin compatibility if replacing with parts from different manufacturers. Check if alternative packages offer improved thermal dissipation for the same electrical specifications.
