Specification	LT8708ILWE#WPBF

Clock Sync	True
Control Features	Enable
Duty Cycle (Max) [Max]	80 %
Frequency - Switching [Max]	400 kHz
Frequency - Switching [Min]	100 kHz
Function	Step-Up/Step-Down
Grade	Automotive
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 C
Output Configuration	Positive
Output Phases	2
Output Type	Transistor Driver
Package / Case	64-LQFP Exposed Pad
Qualification	AEC-Q100
Supplier Device Package	64-LQFP-EP (10x10)
Synchronous Rectifier	True
Topology	Buck-Boost
Voltage - Supply (Vcc/Vdd) [Max]	80 V
Voltage - Supply (Vcc/Vdd) [Min]	2.8 V

LT8708 Series

Part	Topology	Supplier Device Package	Output Type	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Function	Output Configuration	Number of Outputs	Output Phases	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Duty Cycle (Max) [Max]	Mounting Type	Frequency - Switching [Min]	Frequency - Switching [Max]	Control Features	Grade	Qualification
Analog Devices Inc./Maxim Integrated LT8708EUHG#PBF	Buck-Boost	40-QFN (5x8)	Transistor Driver	80 V	2.8 V	Step-Up/Step-Down	Positive	1	2	40-WFQFN Exposed Pad	125 °C	-40 C	80 %	Surface Mount	100 kHz	400 kHz
Analog Devices Inc./Maxim Integrated LT8708IUHG#PBF	Buck-Boost	40-QFN (5x8)	Transistor Driver	80 V	2.8 V	Step-Up/Step-Down	Positive	1	2	40-WFQFN Exposed Pad	125 °C	-40 C	80 %	Surface Mount	100 kHz	400 kHz
Analog Devices Inc./Maxim Integrated LT8708HUHG#PBF	Buck-Boost	40-QFN (5x8)	Transistor Driver	80 V	2.8 V	Step-Up/Step-Down	Positive	1	2	40-WFQFN Exposed Pad	150 °C	-40 C	80 %	Surface Mount	100 kHz	400 kHz
Analog Devices Inc./Maxim Integrated LT8708ELWE#PBF	Buck-Boost	64-LQFP-EP (10x10)	Transistor Driver	80 V	2.8 V	Step-Up/Step-Down	Positive	1	2	64-LQFP Exposed Pad	125 °C	-40 C	80 %	Surface Mount	100 kHz	400 kHz	Enable
Analog Devices Inc./Maxim Integrated LT8708HUHG#TRPBF	Buck-Boost	40-QFN (5x8)	Transistor Driver	80 V	2.8 V	Step-Up/Step-Down	Positive	1	2	40-WFQFN Exposed Pad	150 °C	-40 C	80 %	Surface Mount	100 kHz	400 kHz
Analog Devices Inc./Maxim Integrated LT8708ILWE#WPBF	Buck-Boost	64-LQFP-EP (10x10)	Transistor Driver	80 V	2.8 V	Step-Up/Step-Down	Positive	1	2	64-LQFP Exposed Pad	125 °C	-40 C	80 %	Surface Mount	100 kHz	400 kHz	Enable	Automotive	AEC-Q100
Analog Devices Inc./Maxim Integrated LT8708EUHG#TRPBF	Buck-Boost	40-QFN (5x8)	Transistor Driver	80 V	2.8 V	Step-Up/Step-Down	Positive	1	2	40-WFQFN Exposed Pad	125 °C	-40 C	80 %	Surface Mount	100 kHz	400 kHz
Analog Devices Inc./Maxim Integrated LT8708IUHG#TRPBF	Buck-Boost	40-QFN (5x8)	Transistor Driver	80 V	2.8 V	Step-Up/Step-Down	Positive	1	2	40-WFQFN Exposed Pad	125 °C	-40 C	80 %	Surface Mount	100 kHz	400 kHz
Analog Devices Inc./Maxim Integrated LT8708HLWE#PBF	Buck-Boost	64-LQFP-EP (10x10)	Transistor Driver	60 V	2.8 V	Step-Up/Step-Down	Positive	1	2	64-LQFP Exposed Pad	150 °C	-40 °C	80 %	Surface Mount	100 kHz	400 kHz	Enable
Analog Devices Inc./Maxim Integrated LT8708ILWE#PBF	Buck-Boost	64-LQFP-EP (10x10)	Transistor Driver	80 V	2.8 V	Step-Up/Step-Down	Positive	1	2	64-LQFP Exposed Pad	125 °C	-40 C	80 %	Surface Mount	100 kHz	400 kHz	Enable

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$	Updated

Digikey	N/A	0	$ 3.95	1m+

Description

General part information

LT8708 Series

The LT8708 is a high performance buck-boost switching regulator controller that operates from an input voltage that can be above, below or equal to the output voltage. Features are included to simplify bidirectional power conversion in battery/capacitor backup systems and other applications that may need regulation of VOUT, VIN, IOUT, and/or IIN. Forward and reverse current can be monitored and limited for the input and output sides of the converter. All four current limits (forward input, reverse input, forward output and reverse output) can be set independently using four resistors on the PCB.The MODE pin can select between discontinuous conduction mode (DCM), continuous conduction mode (CCM), hybrid conduction mode (HCM) and Burst Mode®operation. In combination with the DIR (direction) pin, the chip can be configured to process power only from VINto VOUTor only from VOUTto VIN. With a wide 2.8V to 80V input and 1.3V to 80V output range, the LT8708 is compatible with most solar, automotive, telecom and battery-powered systems.APPLICATIONSHigh Voltage Buck-Boost ConvertersBidirectional Charging SystemAutomotive 48V Systems

Documents

Technical documentation and resources

LT8708: 80V Synchronous 4-Switch Buck-Boost DC/DC Controller with Bidirectional Capability Data Sheet (Rev.D)

Data Sheet