LT8471

RECOMMENDED FOR NEW DESIGNS

Dual Multitopology DC/DC Converters with 2A Switches and Synchronization

Data Sheet Product Selection Table
Part Models
10
1ku List Price
Starting From $4.48
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Part Details

  • Dual 2A and One 500mA, 50V Internal Power Switch Channels
  • 2A Primary Channels Can Be Buck, Boost, SEPIC, ZETA, Flyback or Inverting DC/DC Converter
  • 500mA Skyhook Channel Efficiently Generates Boosted Input Voltage
  • Wide Input Voltage Range of 2.6V to 50V
  • UVLO and OVLO Programmable on OV/UV Pin
  • Soft-Start Programmable for Each Channel
  • Fixed Frequency PWM (Set by RT Pin or Synchronized to External Clock)
  • Anti-Phase Switching Reduces Input Ripple
  • 20-Lead TSSOP and 28-Lead QFN Packages
LT8471
Dual Multitopology DC/DC Converters with 2A Switches and Synchronization
6V to 32V to ±5V, Dual DC/DC Converter Efficiency and Power Loss Load from VOUT1 to VOUT2 Product Package 1 LT8471 Video Product Brief - Video Poster Image Product Package 2
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Technical Articles 2

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LT4363
RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper with Current Limit
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LT8471
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC1854A

LT8471EFE Demo Board | Dual Buck/Inverting, 6V ≤ VIN ≤ 32V, VOUT1 = 5V @ 1.4A, VOUT2 = -5V @ 0.8A

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Product Details

DC1854A is a dual output buck and inverting converter. It provides 5V and –5V power from 6V to 32V input. The 5V output can source up to 1.4A load current and the –5V output can source up to 800mA load current. See the load current versus input voltage figures inside this demo manual for more information. The internal skyhook supply is used to provide voltage to the internal npn switch and can be used for various topologies. Although they are assembled as a single inductor buck and a single inductor inverting converter on DC1854A, the two DC/DC converters can be altered for different topologies.
DC1854A
LT8471EFE Demo Board | Dual Buck/Inverting, 6V ≤ VIN ≤ 32V, VOUT1 = 5V @ 1.4A, VOUT2 = -5V @ 0.8A
DC1854 Demo Board DC1854 Demo Board DC1854 Demo Board DC1854 Demo Board DC1854A - Schematic

Latest Discussions

15 Weeks Ago
LT8471 delivers no output voltage in BUCK configuration
18 Weeks Ago
About p.30 Figure 10a of the LT8471 datasheet
18 Weeks Ago
Please elaborate on the role of capacitor C7 in the LT8471 datasheet p.30 Figure 10a.
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