LT3471

PRODUCTION

Dual 1.3A, 1.2MHz Boost/Inverter in 3mm × 3mm DFN

Data Sheet Product Selection Table
Part Models
2
1ku List Price
Starting From $3.75
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Part Details

  • 1.2MHz Switching Frequency
  • Low VCESAT Switches: 330mV at 1.3A
  • High Output Voltage: Up to 40V
  • Wide Input Range: 2.4V to 16V
  • Inverting Capability
  • 5V at 630mA from 3.3V Input
  • 12V at 320mA from 5V Input
  • –12V at 200mA from 5V Input
  • Uses Tiny Surface Mount Components
  • Low Shutdown Current: <1µA
  • Low Profile (0.75mm) 10-Lead 3mm × 3mm DFN Package
LT3471
Dual 1.3A, 1.2MHz Boost/Inverter in 3mm × 3mm DFN
OLED Driver OLED Driver Efficiency Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 2

Design Note 1

Technical Articles 2

Data Sheet

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

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Hardware Ecosystem

Parts Product Life Cycle Description
Current Source-Sink D/A Converters 1
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PRODUCTION Dual Fan Controller with 2-Wire Interface
Digital Temperature Sensors 1
LTC2991
RECOMMENDED FOR NEW DESIGNS Octal I2C Voltage, Current, and Temperature Monitor
Multichannel Voltage Output D/A Converters 1
LTC2633
PRODUCTION Dual 12-/10-/8-Bit I2C VOUT DACs with 10ppm/°C Reference
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LT3471
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
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AD-PAARRAY3552R-SL

RF Front-end GaN Power Amplifier Biasing, Protection, and Control Reference Design

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Features and Benefits

  • Designed to cover full Tx signal chains with integrated MCU and user-friendly GUI for faster and easier integration
  • Supports fault event protection - overvoltage (OV), overcurrent (OC), and overtemperature (OT)
  • Supports ultrafast sub-µs GaN gate voltage switching ~ (<1 µs)
  • Supports ultrafast (<10 µs) fault event protection from detection up to GaN gate pinch-off
  • Wide range of gate bias voltages from -10 V to +10 V
  • Configurable power-up and power-down sequence

Product Details

The AD-PAARRAY3552R-SL reference design provides control, protection, and proper biasing sequence for GaN power amplifier (PA) arrays. The design incorporates the AD3553R high-speed, dual-channel, 16-bit DAC to support the ultrafast sub-µs voltage settling time of GaN gates.

Key fault events, including overvoltage, overcurrent, and overtemperature, are effectively managed by the LTC7000, a static switch driver responsible for system fault protection.

The on-board MAX32666 ultralow-power ARM® Cortex®-M4 microprocessor provides essential debug and programming features for a comprehensive software development experience with the system. The system's firmware is built on ADI's open-source no-OS framework and includes a user-friendly graphical interface (GUI) for evaluation. Updates are easily applied through an SWD UART bootloader, streamlining prototyping.

The system can be powered by an external +48 V supply, requiring high current capabilities.

APPLICATIONS

  • 5G massive MIMOs
  • Macro base stations
Specifications
Fault Events
Fault Default Limit
Overvoltage +55 V
Overcurrent 3.5 A
Overtemperature 75°C
Output Ports
Port Name No. of ports
GaN gate ports 6
+48 V Gan drain ports 4
+5 V ports 5
Enable ports 2
Power Supply
External +48 V DC at 5 A
Operating Conditions
Temperature Range 45°C to +75°C

eval board
schematic 5
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SCP-LT3471-EVALZ

LT3471 Signal Chain Evaluation Board | Dual Boost/Inverting Converter

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Product Details

Demonstration circuit SCP-LT3471-EVALZ is a dual output converter featuring the LT3471EDD in boost and inverter configurations. Both converters are powered from the same 4.5V to 10V input source. The Boost converter puts out 12V at 300mA and the Inverter –12V at 200mA.

Like all boards in the Signal Chain Power series, this board is designed to be easily plugged into other SCP boards to form a complete signal chain power system, enabling fast evaluation of low power signal chains. To evaluate this board, some universal SCP hardware is required, namely:

  • SCP-INPUT-EVALZ
  • SCP-OUTPUT-EVALZ
  • SCP-1X5BKOUT-EVALZ
  • SCP-THRUBRD-EVALZ
  • SCP-FILTER-EVALZ
  • SCP-1X2BKOUT-EVALZ
  • SCP-5X1-EVALZ

 

To properly evaluate SCP series demo boards, you will need the SCP Configurator companion software. SCP Configurator can help you choose the right board and topology for your design.

Note that the Demo Manual does not cover details important to the operation and configuration regarding the LT3471. Please refer to the LT3471 data sheet for a complete description of the part.

eval board
schematic 8
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DC1280A

LT3471EDD Demo Board | Dual 12 VOUT @ 300mA & -12 VOUT @ 200mA Boost/Inverter in 3 × 3 DFN

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Product Details

Demonstration circuit 1280A is a dual output converter featuring the LT3471EDD in Boost and Inverter configurations. Both converters are powered from the same 4.5V to 10V input source. The Boost converter puts out 12V at 300mA and the Inverter -12V at 200mA. The demo circuit demonstrates small size and low component count. The LT3471 operates with inputs as high as 16V but in this demo board the input is limited by the magnitude of the Boost output. In a Boost converter the input needs to be less than the output. The DC1280A is designed so that the Inverting converter can easily be configured as a Boost. Instructions are included in the schematic. Both circuits are designed to demonstrate the soft start feature, advantages of the 1.2MHz switching frequency and the internal 42V/1.3A switches.
AD-PAARRAY3552R-SL
RF Front-end GaN Power Amplifier Biasing, Protection, and Control Reference Design
AD-PAARRAY3552R-SL Block Diagram AD-PAARRAY3552R-SL Board Photo Angle View AD-PAARRAY3552R-SL Board Photo Top View AD-PAARRAY3552R-SL Board Photo Bottom View
SCP-LT3471-EVALZ
LT3471 Signal Chain Evaluation Board | Dual Boost/Inverting Converter
LT3471 Signal Chain Evaluation Board LT3471 Signal Chain Evaluation Board - Top View LT3471 Signal Chain Evaluation Board - Bottom View
DC1280A
LT3471EDD Demo Board | Dual 12 VOUT @ 300mA & -12 VOUT @ 200mA Boost/Inverter in 3 × 3 DFN
DC1280A Demo Board DC1280A Demo Board DC1280A Demo Board DC1280A Demo Board DC1280A - Schematic

Reference Designs

EVAL-CN0531-PMDZ Simplified Block Diagram
EVAL-CN0531-PMDZ Simplified Block Diagram
CN0531 Circuits from the lab

Programmable 20-Bit, Linear, Precision, Bipolar ± 5V DC Voltage Source

View Detailed Reference Design

Features and Benefits

  • +/-5V Output Range
  • 20-Bit Signal Generation Control
  • On board precision 5V Reference
  • All Power Rails Generated Using a Single 3.3V Source

Part Used

Resources

Design & Integration Tools

Videos

  • lazy blur
    VIDEO · 2021-09-09 01:00
    ADI's CN0531: Programmable 20-Bit Precision DC Voltage Source
  • lazy blur
    VIDEO · 2022-03-23 02:09
    Precision Narrow Bandwidth Signal Chain Solutions
CN0531
Programmable 20-Bit, Linear, Precision, Bipolar ± 5V DC Voltage Source
EVAL-CN0531-PMDZ Simplified Block Diagram

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