LT8708EUHG#TRPBF

$14.03

Description：80V SYNCHRONOUS 4-SWITCH BUCK-BO
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:f4bddc9a5835 Category: DC DC Switching Controllers Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：80V SYNCHRONOUS 4-SWITCH BUCK-BO
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Output Type：Transistor Driver
Function：Step-Up/Step-Down
Output Configuration：Positive
Topology：Buck-Boost
Number of Outputs：1
Output Phases：2
Voltage - Supply (Vcc/Vdd)：2.8V ~ 80V
Frequency - Switching：100kHz ~ 400kHz
Duty Cycle (Max)：80%
Synchronous Rectifier：Yes
Clock Sync：Yes
Serial Interfaces：-
Control Features：-
Operating Temperature：-40°C ~ 125°C
Mounting Type：Surface Mount
Package / Case：40-WFQFN Exposed Pad
Supplier Device Package：40-QFN (5x8)

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LT8708EUHG#TRPBF

Overview

The LT8708EUHG#TRPBF is a synchronous four-switch buck-boost DC/DC controller from Analog Devices, designed for bidirectional power transfer. It supports input voltages (VIN) ranging from 2.8V to 80V and output voltages (VOUT) from 1.3V to 80V, provided EXTVCC exceeds 6.4V. The device operates at switching frequencies between 100kHz and 400kHz with a maximum duty cycle of 80%. It features six independent regulation modes for VIN/VOUT voltage and forward/reverse current control. The component is housed in a 40-pin QFN package (5mm × 8mm) and is rated for industrial temperatures (-40°C to +125°C).

Feature Summary

Bidirectional power transfer capability allowing energy flow from VIN to VOUT or vice versa.
Six independent regulation modes for precise control of input/output voltages and currents.
Flexible conduction mode support including DCM, CCM, HCM, and Burst Mode®.
Integrated high-voltage pin spacing within a compact 40-pin QFN package.

Applications

Automotive 48V systems
Battery and capacitor backup systems
Humanoid robot dual-battery energy storage
Servo braking energy recovery

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm that the EXTVCC supply requirement is met by the system design, as the controller requires this auxiliary voltage above 6.4V for proper operation. Ensure the application environment falls within the specified -40°C to +125°C industrial temperature range for the EUHG variant.

Selection Notes

Select this controller for applications requiring true bidirectional energy flow where input voltage may be higher, lower, or equal to the output voltage. It is suitable for designs needing independent current limiting on both input and output sides. Consider the 40-pin QFN package for space-constrained PCB layouts. Verify compatibility with external N-MOSFETs for the four-switch topology.

Part Context

This part belongs to the LT8708 series of high-performance buck-boost switching regulator controllers. The series includes variants like LT8708IUHG and LT8708HUHG, which share core electrical specifications but differ in temperature ratings and automotive certification levels. The EUHG variant represents the standard industrial grade option within this family.