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LT8471IFE#PBF

ADILT8471IFE#PBF

Analog Devices Inc.
Buck, Boost, Flyback, SEPIC Switching Regulator IC Positive or Negative Adjustable 2.6V 2 Output 1.35A (Switch), 2.1A (Switch) 20-TSSOP (0.173", 4.40mm Width) Exposed Pad
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Overview

The LT8471IFE#PBF is a versatile dual-channel DC/DC converter capable of operating across a wide 2.6V to 50V input range. Each channel features independent power switches rated at 1.35A and 2.1A, allowing for the simultaneous generation of positive and negative rails from a single input source.

Why Choose This Part

The primary advantage is its flexibility; it can be configured for Buck, Boost, SEPIC, or Flyback topologies on either channel. Its wide input range and integrated power switches reduce component count and PCB area compared to using multiple discrete controllers.

Applications

Bipolar Power Supplies
Ideal for creating symmetric +/- 12V or +/- 15V rails for operational amplifiers and data converters from a single 5V or 12V bus.
Industrial Control Systems
Provides flexible voltage conversion in environments with noisy or widely varying 24V supply rails due to its high 50V maximum input rating.
SEPIC and Flyback Converters
Utilizes its unique switch configuration to support non-isolated and isolated topologies where the output voltage can be higher or lower than the input.

Key Specifications

Function Step-Up, Step-Down, Step-Up/Step-Down
Topology Buck, Boost, Flyback, SEPIC
Output Type Adjustable
Mounting Type Surface Mount
Package / Case 20-TSSOP (0.173", 4.40mm Width) Exposed Pad
Current - Output 1.35A (Switch), 2.1A (Switch)
Number of Outputs 2
Output Configuration Positive or Negative
Frequency - Switching 100kHz ~ 2MHz
Operating Temperature -40degC ~ 125degC (TJ)
Synchronous Rectifier No
Voltage - Input (Max) 50V
Voltage - Input (Min) 2.6V
Voltage - Output (Max) 50V (Switch)
Supplier Device Package 20-TSSOP-EP
Voltage - Output (Min/Fixed) 2.6V

Getting Started

Start by using Analog Devices LTspice to simulate your specific topology and verify stability across the load range. For hardware evaluation, the DC1880A demonstration circuit provides a reference layout for a typical dual-output configuration.