Datasheet Linear Technology LT3752

Manufacturer	Linear Technology
Series	LT3752

Active Clamp Synchronous Forward Controllers with Internal Housekeeping Controller

Datasheets

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PDF, 618 Kb, File uploaded: Sep 19, 2017

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Packaging

	LT3752EFE#PBF	LT3752EFE#TRPBF	LT3752HFE#PBF	LT3752HFE#TRPBF	LT3752IFE#PBF	LT3752IFE#TRPBF	LT3752MPFE#PBF	LT3752MPFE#TRPBF
N	1	2	3	4	5	6	7	8
Package	TSSOP-38 Package Outline Drawing	TSSOP-38 Package Outline Drawing	TSSOP-38 Package Outline Drawing	TSSOP-38 Package Outline Drawing	TSSOP-38 Package Outline Drawing	TSSOP-38 Package Outline Drawing	TSSOP-38 Package Outline Drawing	TSSOP-38 Package Outline Drawing
Package Code	FE	FE	FE	FE	FE	FE	FE	FE
Package Index	05-08-1865	05-08-1865	05-08-1865	05-08-1865	05-08-1865	05-08-1865	05-08-1865	05-08-1865
Pin Count	38	38	38	38	38	38	38	38

Parametrics

Parameters / Models	LT3752EFE#PBF	LT3752EFE#TRPBF	LT3752HFE#PBF	LT3752HFE#TRPBF	LT3752IFE#PBF	LT3752IFE#TRPBF	LT3752MPFE#PBF	LT3752MPFE#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC1994A,DC1929A,DC2175A	DC1994A,DC1929A,DC2175A	DC1994A,DC1929A,DC2175A	DC1994A,DC1929A,DC2175A	DC1994A,DC1929A,DC2175A	DC1994A,DC1929A,DC2175A	DC1994A,DC1929A,DC2175A	DC1994A,DC1929A,DC2175A
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File
Export Control	no	no	no	no	no	no	no	no
Features	Internal Housekeeping DC/DC, Programmable Volt Second Clamp, Active Clamp, External Synchronization, Resistor Set Frequency	Internal Housekeeping DC/DC, Programmable Volt Second Clamp, Active Clamp, External Synchronization, Resistor Set Frequency	Internal Housekeeping DC/DC, Programmable Volt Second Clamp, Active Clamp, External Synchronization, Resistor Set Frequency	Internal Housekeeping DC/DC, Programmable Volt Second Clamp, Active Clamp, External Synchronization, Resistor Set Frequency	Internal Housekeeping DC/DC, Programmable Volt Second Clamp, Active Clamp, External Synchronization, Resistor Set Frequency	Internal Housekeeping DC/DC, Programmable Volt Second Clamp, Active Clamp, External Synchronization, Resistor Set Frequency	Internal Housekeeping DC/DC, Programmable Volt Second Clamp, Active Clamp, External Synchronization, Resistor Set Frequency	Internal Housekeeping DC/DC, Programmable Volt Second Clamp, Active Clamp, External Synchronization, Resistor Set Frequency
Frequency, kHz	500	500	500	500	500	500	500	500
Frequency Adjust Range	100kHz - 500kHz	100kHz - 500kHz	100kHz - 500kHz	100kHz - 500kHz	100kHz - 500kHz	100kHz - 500kHz	100kHz - 500kHz	100kHz - 500kHz
Frequency Sync Range	100kHz - 500kHz	100kHz - 500kHz	100kHz - 500kHz	100kHz - 500kHz	100kHz - 500kHz	100kHz - 500kHz	100kHz - 500kHz	100kHz - 500kHz
Integrated Inductor	no	no	no	no	no	no	no	no
Ishutdown, µA	165	165	165	165	165	165	165	165
Isupply, mA	7.5	7.5	7.5	7.5	7.5	7.5	7.5	7.5
Monolithic	no	no	no	no	no	no	no	no
Number of Outputs	1	1	1	1	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	-40 to 125	-40 to 125	-40 to 85	-40 to 85	-55 to 125	-55 to 125
Switch Current, A	25	25	25	25	25	25	25	25
Synchronous	yes	yes	yes	yes	yes	yes	yes	yes
Topology	Forward	Forward	Forward	Forward	Forward	Forward	Forward	Forward
Topology 1	Forward	Forward	Forward	Forward	Forward	Forward	Forward	Forward
Vin Max, V	100	100	100	100	100	100	100	100
Vin Min, V	6.5	6.5	6.5	6.5	6.5	6.5	6.5	6.5

Eco Plan

	LT3752EFE#PBF	LT3752EFE#TRPBF	LT3752HFE#PBF	LT3752HFE#TRPBF	LT3752IFE#PBF	LT3752IFE#TRPBF	LT3752MPFE#PBF	LT3752MPFE#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Other Options

LT3752 LT3752-1 LT3752-1

Articles

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Active Clamp Synchronous Controllers for Forward Converters with 6.5V to 100V+ Inputs &mdash LT Journal
PDF, 704 Kb, File published: Apr 9, 2014
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April 2014 I N T H I S I S S U E robust RS485/RS422
transceivers 9 high voltage surge stoppers
ease MIL-STD-1275D
compliance 15 Volume 24 Number 1 Active Clamp Synchronous
Controllers for Forward Converters
with 6.5V to 100V+ Inputs
Wei Gu, Randyco Prasetyo and Fei Guo boost-thenвЂ‘buck LED driver
for high PWM dimming
ratios 22 cost-effective high voltage
isoSPIв„ў coupling 26 ideal diode combines 200V
busses 30 The LT3752, LT3752вЂ‘1 and LT3753 are highly integrated, high
performance active clamp forward controllers that minimize external
component count, solution size and cost. Two of these controllers,
the LT3752 and LT3753, are designed for inputs up to 100V, while
the LT3752-1 is designed for applications with input voltages greater
than 100VвЂ”suitable for HV car battery and offline isolated power
supplies, industrial, automotive and military systems. All produce
compact, versatile and efficient solutions for single-IC output power
levels up to 400W. Higher power levels are
supported by stacking converter outputs
in series. See Table 1 (on page 4) for a
feature comparison of these devices.
NO-OPTO MODE OPERATION REGULATES WITH …

Model Line

Series: LT3752 (8)

LT3752EFE#PBF LT3752EFE#TRPBF LT3752HFE#PBF LT3752HFE#TRPBF LT3752IFE#PBF LT3752IFE#TRPBF LT3752MPFE#PBF LT3752MPFE#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Flyback, Forward and Isolated Controllers
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators