LT8685S Series

42V Quad, Gangable, Synchronous, Monolithic Step-Down Regulator

Manufacturer: Analog Devices Inc./Maxim Integrated

Catalog

42V Quad, Gangable, Synchronous, Monolithic Step-Down Regulator

Part	Voltage - Output (Min/Fixed)	Topology	Function	Qualification	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]	Current - Output	Grade	Number of Outputs	Frequency - Switching [Min]	Frequency - Switching [Max]	Mounting Type	Output Type	Output Configuration	Voltage - Input (Min)	Voltage - Input (Max) [Max]	Package / Case	Voltage - Output (Max)
Analog Devices Inc./Maxim Integrated LT8685SRV#TRPBF	0.7 V 0.8 V	Buck	Step-Down	AEC-Q100	36-LQFN (5x6)	-40 °C	150 °C	2.5 A 4 A	Automotive	4	350 kHz	3 MHz	Surface Mount	Adjustable	Positive	2.8 V 3 V	8 V 42 V	36-TFQFN Exposed Pad	8 V 42 V
Analog Devices Inc./Maxim Integrated LT8685SRV#WPBF	0.7 V 0.8 V	Buck	Step-Down	AEC-Q100	36-LQFN (5x6)	-40 °C	150 °C	2.5 A 4 A	Automotive	4	350 kHz	3 MHz	Surface Mount	Adjustable	Positive	2.8 V 3 V	8 V 42 V	36-TFQFN Exposed Pad	8 V 42 V
Analog Devices Inc./Maxim Integrated LT8685SRV#PBF	0.7 V 0.8 V	Buck	Step-Down	AEC-Q100	36-LQFN (5x6)	-40 °C	150 °C	2.5 A 4 A	Automotive	4	350 kHz	3 MHz	Surface Mount	Adjustable	Positive	2.8 V 3 V	8 V 42 V	36-TFQFN Exposed Pad	8 V 42 V

Catalog

42V Quad, Gangable, Synchronous, Monolithic Step-Down Regulator

Description

The LT8685S is a highly flexible, four channel, current mode, monolithic regulator able to power a wide range of automotive and industrial applications while occupying minimal board space.The LT8685S combines two 42V capable 2.5A buck regulators with two 8V capable 4A buck regulators. The two 42V regulators may be combined to provide up to 5A of output current using a single inductor. Similarly, the two 8V regulators may be combined to provide up to 8A of output current using a single inductor. Individual channel enable, track/soft-start and power good pins provide flexible power supply sequencing and control. The LT8685S features a Silent Switcher 2 architecture, plus selectable spread spectrum mode, to provide ultralow EMI/EMC emissions while delivering high efficiency at high switching frequencies.The LT8685S incorporates thermal shutdown and individual channel cycle-by-cycle current limit for short circuit protection and robust operation.APPLICATIONSAutomotive SystemsIndustrial Controls and Power Supplies