LT8708-1

RECOMMENDED FOR NEW DESIGNS

80V Synchronous 4-Switch Buck-Boost DC/DC Slave Controller for LT8708 Multiphase System

Analog Devices LT8708-1 Product Info

10 February 2026 6

Features

Slave Chip of LT8708 to Deliver Additional Power
Good Current Matching to the Average Output Current of LT8708 Through Current Regulation
Easily Paralleled with LT8708 Through Four Pins
Synchronized Start-Up with LT8708
Same Conduction Modes as LT8708

Synchronous Rectification: Up to 98% Efficiency
Frequency Range: 100kHz to 400kHz
Available in 40-Lead (5mm × 8mm) QFN with High Voltage Pin Spacing and 64-Lead (10mm × 10mm) eLQFP
AEC-Q100 Qualifed for Automotive Applications

Part details & applications

The LT8708-1 is a high performance buck-boost switching regulator controller that is paralleled with the LT8708 to add power and phases to an LT8708 system. The LT8708-1 always operates as a slave to the master LT8708 and has the capability of delivering as much current or power as the master. One or more slaves can be connected to a single master, proportionally increasing power and current capability of the system.

The LT8708-1 has the same conduction modes as LT8708, allowing the LT8708-1 to conduct current and power in the same direction(s) as the master. The master controls the overall current and voltage limits for an LT8708 multiphase system, and the slaves comply with these limits.

LT8708-1s can be easily paralleled with the LT8708 by connecting four signals together. Two additional current limits (forward V_IN current and reverse V_IN current) are available on each slave that can be set independently.

Applications

High Voltage Buck-Boost Converters
Bidirectional Charging Systems
Automotive 48V Systems

Subscribe to Welllinkchips !

Your Name

* Email