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DC/DC Cntrlr Single-OUT Step Down/Step Up 400kHz Automotive 31-Pin TSSOP EP T/R

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LT8705AEFE#TRPBF General Description

The LT8705A is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The part has integrated input current, input voltage, output current and output voltage feedback loops. With a wide 2.8V to 80V input and 1.3V to 80V output range, the LT8705A is compatible with most solar, automotive, telecom and battery-powered systems. The LT8705A is an improved pin compatible version of the LT8705 and is recommended for new designs. See LT8705A vs LT8705 in the Applications Information section for more information.

The LT8705A includes a MODE pin to select among Burst Mode® operation, discontinuous or continuous conduction mode at light loads. Additional features include a 3.3V/12mA LDO, a synchronizable fixed operating frequency, and onboard gate drivers.

LT8705LT8705AImproved, pin-to-pin compatible version of LT8705.Recommended for all new designs

Analog Devices, Inc Inventory

Key Features

  • Single Inductor Allows VIN Above, Below, or Equal to Regulated VOUT
  • VIN Range 2.8V (Need EXTVCC > 6.4V) to 80V
  • VOUT Range: 1.3V to 80V
  • Quad N-Channel MOSFET Gate Drivers
  • Synchronous Rectification: Up to 98% Efficiency
  • Input and Output Current Monitor Pins
  • Synchronizable Fixed Frequency: 100kHz to 400kHz
  • Integrated Input Current, Input Voltage, Output Current and Output Voltage Feedback Loops
  • Improved Light Load Transition from DCM to FCM
  • Improved IMON_OUT, IMON_IN Offset When Cold
  • Clock Output Usable To Monitor Die Temperature
Analog Devices, Inc Original Stock


  • High Voltage Buck-Boost Converters
  • Input or Output Current Limited Converters
Analog Devices, Inc Inventory


model LT8705AEFE#TRPBF package 38-Lead TSSOP w/ EP
packingQty Reel,2000 packingOption Reel
packageType 05-08-1865 rohs roHSY
lifeCycle production tempRange -40 to 125C
Manufacturer Analog Devices Inc. Product Category Switching Voltage Regulators
RoHS Details Output Voltage 1.3 V to 80 V
Output Current 10 A Input Voltage, Max 80 V
Number of Outputs 1 Output Topology Buck, Buck-Boost
Package / Case TSSOP-38 Mounting Style SMD/SMT
Switching Frequency 400 kHz Quiescent Current 2.65 mA
Minimum Operating Temperature - 40 C Maximum Operating Temperature + 125 C
Series LT8705A Input Voltage, Min 2.8 V
Brand Analog Devices Input Voltage 2.85 V to 80 V
Operating Supply Current 2.65 mA Product Type Switching Voltage Regulators
Shutdown Shutdown Factory Pack Quantity 2000
Subcategory PMIC - Power Management ICs Supply Voltage - Min 2.85 V
Type Switching Regulator


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The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

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Checks and other instruments are not supported to pay for orders and customers are required to pay all possible fees, including sales tax,
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Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
  • ESD


  • Tape and Reel

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Buying Guide

  • What is the lifespan of LT8705AEFE#TRPBF?

    The lifespan of LT8705AEFE#TRPBF depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.

  • Where can I find the full specification of LT8705AEFE#TRPBF?

    You can find it with PDF Datasheet for LT8705AEFE#TRPBF on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.

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