LT3752HFE-1#PBF

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Analog Devices Inc./Maxim Integrated

ACTIVE CLAMP SYNCHRONOUS FORWARD CONTROLLERS WITH INTERNAL HOUSEKEEPING CONTROLLER

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LT3752HFE-1#PBF

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Analog Devices Inc./Maxim Integrated

ACTIVE CLAMP SYNCHRONOUS FORWARD CONTROLLERS WITH INTERNAL HOUSEKEEPING CONTROLLER

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT3752LT3752-1 Series

The LT3752/LT3752-1 are current mode PWM controllers optimized for an active clamp forward converter topology. A DC/DC housekeeping controller is included for improved efficiency and performance. The LT3752 allows operation up to 100V input and the LT3752-1 is optimized for applications with input voltages greater than 100V.A programmable volt-second clamp allows primary switch duty cycles above 50% for high switch, transformer and rectifier utilization. Active clamp control reduces switch voltage stress and increases efficiency. A synchronous output is available for controlling secondary side synchronous rectification.The LT3752/LT3752-1 are available in a 38-lead plastic TSSOP package with missing pins for high voltage spacings.ApplicationsOffline and HV Car Battery Isolated Power Supplies48V Telecommunication Isolated Power SuppliesIndustrial, Automotive and Military Systems

Technical Specifications

Parameters and characteristics for this part

Specification	LT3752HFE-1#PBF

Clock Sync	Yes
Control Features	Frequency Control, Enable, Soft Start
Duty Cycle (Max)	95 %
Frequency - Switching (Max)	500 kHz
Frequency - Switching (Min)	100 kHz
Function	Step-Up, 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 Phases	1
Output Type	Transistor Driver
Package Features	31 Leads, Exposed Pad
Package Length	0.173 in
Package Name	38-TFSOP, 38-TSSOP-EP
Package Width	4.4 mm
Synchronous Rectifier	Yes
Topology	Forward Converter
Voltage - Supply (Vcc/Vdd) Maximum	16 V
Voltage - Supply (Vcc/Vdd) Minimum	10.5 V

LT3752LT3752-1 Series

Part	Frequency - Switching (Max)	Frequency - Switching (Min)	Control Features	Mounting Type	Operating Temperature (Max)	Operating Temperature (Min)	Output Configuration	Package Name	Clock Sync	Package Length	Package Features	Package Width	Duty Cycle (Max)	Output Type	Voltage - Supply (Vcc/Vdd) Maximum	Voltage - Supply (Vcc/Vdd) Minimum	Function	Number of Outputs	Output Phases	Synchronous Rectifier	Topology	Qualification	Grade
Analog Devices Inc./Maxim Integrated LT3752IFE#PBF	500 kHz	100 kHz	Enable Frequency Control Soft Start	Surface Mount	125 °C	-40 °C	Isolation Capable Positive	38-TFSOP 38-TSSOP-EP	Yes	0.173 in	31 Leads Exposed Pad	4.4 mm	95 %	Transistor Driver	100 V	6.5 V	Step-Down Step-Up	1	1	Yes	Forward Converter
Analog Devices Inc./Maxim Integrated LT3752HFE-1#PBF	500 kHz	100 kHz	Enable Frequency Control Soft Start	Surface Mount	150 °C	-40 °C	Isolation Capable Positive	38-TFSOP 38-TSSOP-EP	Yes	0.173 in	31 Leads Exposed Pad	4.4 mm	95 %	Transistor Driver	16 V	10.5 V	Step-Down Step-Up	1	1	Yes	Forward Converter
Analog Devices Inc./Maxim Integrated LT3752HFE-1#WPBF	500 kHz	100 kHz	Enable Frequency Control Soft Start	Surface Mount	150 °C	-40 °C	Isolation Capable Positive	38-TFSOP 38-TSSOP-EP	Yes	0.173 in	31 Leads Exposed Pad	4.4 mm	95 %	Transistor Driver	100 V	6.5 V	Step-Down Step-Up	1	1	Yes	Forward Converter	AEC-Q100	Automotive
Analog Devices Inc./Maxim Integrated LT3752MPFE-1#TRPBF	500 kHz	100 kHz	Enable Frequency Control Soft Start	Surface Mount	150 °C	-55 °C	Isolation Capable Positive	38-TFSOP 38-TSSOP-EP	Yes	0.173 in	31 Leads Exposed Pad	4.4 mm	95 %	Transistor Driver	16 V	10.5 V	Step-Down Step-Up	1	1	Yes	Forward Converter
Analog Devices Inc./Maxim Integrated LT3752HFE#PBF	500 kHz	100 kHz	Enable Frequency Control Soft Start	Surface Mount	150 °C	-40 °C	Isolation Capable Positive	38-TFSOP 38-TSSOP-EP	Yes	0.173 in	31 Leads Exposed Pad	4.4 mm	95 %	Transistor Driver	100 V	6.5 V	Step-Down Step-Up	1	1	Yes	Forward Converter
Analog Devices Inc./Maxim Integrated LT3752EFE-1#PBF	500 kHz	100 kHz	Enable Frequency Control Soft Start	Surface Mount	125 °C	-40 °C	Isolation Capable Positive	38-TFSOP 38-TSSOP-EP	Yes	0.173 in	31 Leads Exposed Pad	4.4 mm	95 %	Transistor Driver	16 V	10.5 V	Step-Down Step-Up	1	1	Yes	Forward Converter
Analog Devices Inc./Maxim Integrated LT3752IFE-1#TRPBF	500 kHz	100 kHz	Enable Frequency Control Soft Start	Surface Mount	125 °C	-40 °C	Isolation Capable Positive	38-TFSOP 38-TSSOP-EP	Yes	0.173 in	31 Leads Exposed Pad	4.4 mm	95 %	Transistor Driver	16 V	10.5 V	Step-Down Step-Up	1	1	Yes	Forward Converter
Analog Devices Inc./Maxim Integrated LT3752EFE-1#TRPBF	500 kHz	100 kHz	Enable Frequency Control Soft Start	Surface Mount	125 °C	-40 °C	Isolation Capable Positive	38-TFSOP 38-TSSOP-EP	Yes	0.173 in	31 Leads Exposed Pad	4.4 mm	95 %	Transistor Driver	16 V	10.5 V	Step-Down Step-Up	1	1	Yes	Forward Converter
Analog Devices Inc./Maxim Integrated LT3752MPFE#PBF	500 kHz	100 kHz	Enable Frequency Control Soft Start	Surface Mount	150 °C	-55 °C	Isolation Capable Positive	38-TFSOP 38-TSSOP-EP	Yes	0.173 in	31 Leads Exposed Pad	4.4 mm	95 %	Transistor Driver	100 V	6.5 V	Step-Down Step-Up	1	1	Yes	Forward Converter
Analog Devices Inc./Maxim Integrated LT3752EFE#PBF	500 kHz	100 kHz	Enable Frequency Control Soft Start	Surface Mount	125 °C	-40 °C	Isolation Capable Positive	38-TFSOP 38-TSSOP-EP	Yes	0.173 in	31 Leads Exposed Pad	4.4 mm	95 %	Transistor Driver	100 V	6.5 V	Step-Down Step-Up	1	1	Yes	Forward Converter

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

R530 Reliability Data

LT3752HFE-1#PBF | Datasheet