LT8315HFE#PBF

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Analog Devices Inc./Maxim Integrated

560VINMICROPOWER NO-OPTO ISOLATED FLYBACK CONVERTER WITH 630V/300MA SWITCH

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LT8315HFE#PBF

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Analog Devices Inc./Maxim Integrated

560VINMICROPOWER NO-OPTO ISOLATED FLYBACK CONVERTER WITH 630V/300MA SWITCH

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT8315 Series

The LT8315 is a high voltage flyback converter with integrated 630V/300mA switch. No opto-isolator is needed for regulation. The device samples the output voltage from the isolated flyback waveform appearing across a third winding on the transformer. Quasi-resonant boundary mode operation improves load regulation, reduces transformer size, and maintains high efficiency.At start-up, the LT8315 charges its INTVCCcapacitor via a current source attached to the DRAIN pin. During normal operation, the current source turns off and the device draws its power from a third winding on the transformer.The LT8315 operates from a wide range of input supply voltages and can deliver up to 15W of power. It is available in a thermally enhanced 20-pin TSSOP package with four pins removed for high-voltage spacing.ApplicationsIsolated Telecom, Automotive, Industrial, Medical Power SuppliesIsolated Off Line Housekeeping Power SuppliesElectric Vehicles and Battery Stacks

Technical Specifications

Parameters and characteristics for this part

Specification	LT8315HFE#PBF

Current - Output	800 mA
Frequency - Switching (Max)	140 kHz
Frequency - Switching (Min)	220 Hz
Function	Step-Up/Step-Down, Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	150 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive, Isolation Capable
Output Type	Fixed
Package Features	16 Leads, Exposed Pad
Package Length	0.173 in
Package Name	20-TSSOP-EP, 20-TSSOP
Package Width	4.4 mm
Synchronous Rectifier	No
Topology	Flyback
Voltage - Input (Max)	560 V
Voltage - Input (Min)	18 V

LT8315 Series

560VINMicropower No-Opto Isolated Flyback Converter with 630V/300mA Switch

Part	Frequency - Switching (Min)	Frequency - Switching (Max)	Current - Output	Topology	Number of Outputs	Synchronous Rectifier	Output Type	Output Configuration	Voltage - Input (Min)	Function	Mounting Type	Package Width	Package Features	Package Name	Package Length	Operating Temperature (Min)	Operating Temperature (Max)	Voltage - Input (Max)
Analog Devices Inc./Maxim Integrated LT8315HFE#TRPBF	220 Hz	140 kHz	800 mA	Flyback	1	No	Fixed	Isolation Capable Positive	18 V	Step-Down Step-Up/Step-Down	Surface Mount	4.4 mm	16 Leads Exposed Pad	20-TSSOP 20-TSSOP-EP	0.173 in	-40 °C	150 °C	560 V
Analog Devices Inc./Maxim Integrated LT8315EFE#TRPBF	220 Hz	140 kHz	800 mA	Flyback	1	No	Fixed	Isolation Capable Positive	18 V	Step-Down Step-Up/Step-Down	Surface Mount	4.4 mm	16 Leads Exposed Pad	20-TSSOP 20-TSSOP-EP	0.173 in	-40 °C	125 °C	560 V
Analog Devices Inc./Maxim Integrated LT8315HFE#PBF	220 Hz	140 kHz	800 mA	Flyback	1	No	Fixed	Isolation Capable Positive	18 V	Step-Down Step-Up/Step-Down	Surface Mount	4.4 mm	16 Leads Exposed Pad	20-TSSOP 20-TSSOP-EP	0.173 in	-40 °C	150 °C	560 V
Analog Devices Inc./Maxim Integrated LT8315EFE#PBF	220 Hz	140 kHz	800 mA	Flyback	1	No	Fixed	Isolation Capable Positive	18 V	Step-Down Step-Up/Step-Down	Surface Mount	4.4 mm	16 Leads Exposed Pad	20-TSSOP 20-TSSOP-EP	0.173 in	-40 °C	125 °C	560 V
Analog Devices Inc./Maxim Integrated LT8315IFE#PBF	220 Hz	140 kHz	800 mA	Flyback	1	No	Fixed	Isolation Capable Positive	18 V	Step-Down Step-Up/Step-Down	Surface Mount	4.4 mm	16 Leads Exposed Pad	20-TSSOP 20-TSSOP-EP	0.173 in	-40 °C	125 °C	560 V
Analog Devices Inc./Maxim Integrated LT8315IFE#TRPBF	220 Hz	140 kHz	800 mA	Flyback	1	No	Fixed	Isolation Capable Positive	18 V	Step-Down Step-Up/Step-Down	Surface Mount	4.4 mm	16 Leads Exposed Pad	20-TSSOP 20-TSSOP-EP	0.173 in	-40 °C	125 °C	560 V

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

R570 Reliability Data

LT8315: 560VIN Micropower No-Opto Isolated Flyback Converter with 630V/300mA Switch Data Sheet