Datasheet Linear Technology LT3641

Manufacturer	Linear Technology
Series	LT3641

Dual Monolithic Buck Regulator with Power-On Reset and Watchdog Timer

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PDF, 452 Kb, Language: en, File uploaded: Sep 18, 2017, Pages: 28
Dual Monolithic Buck Regulator with Power-On Reset and Watchdog Timer

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Packaging

	LT3641EFE#PBF	LT3641EFE#TRPBF	LT3641EUFD#PBF	LT3641EUFD#TRPBF	LT3641HFE#PBF	LT3641HFE#TRPBF	LT3641IFE#PBF	LT3641IFE#TRPBF	LT3641IUFD#PBF	LT3641IUFD#TRPBF
N	1	2	3	4	5	6	7	8	9	10
Package	TSSOP-28 Package Outline Drawing	TSSOP-28 Package Outline Drawing	4x5 QFN-28 Package Outline Drawing	4x5 QFN-28 Package Outline Drawing	TSSOP-28 Package Outline Drawing	TSSOP-28 Package Outline Drawing	TSSOP-28 Package Outline Drawing	TSSOP-28 Package Outline Drawing	4x5 QFN-28 Package Outline Drawing	4x5 QFN-28 Package Outline Drawing
Package Code	FE	FE	UFD	UFD	FE	FE	FE	FE	UFD	UFD
Package Index	05-08-1663 (EB)	05-08-1663 (EB)	05-08-1712	05-08-1712	05-08-1663 (EB)	05-08-1663 (EB)	05-08-1663 (EB)	05-08-1663 (EB)	05-08-1712	05-08-1712
Pin Count	28	28	28	28	28	28	28	28	28	28

Parametrics

Parameters / Models	LT3641EFE#PBF	LT3641EFE#TRPBF	LT3641EUFD#PBF	LT3641EUFD#TRPBF	LT3641HFE#PBF	LT3641HFE#TRPBF	LT3641IFE#PBF	LT3641IFE#TRPBF	LT3641IUFD#PBF	LT3641IUFD#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	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC1727A	DC1727A	DC1727A	DC1727A	DC1727A	DC1727A	DC1727A	DC1727A	DC1727A	DC1727A
Design Tools	LTspice File	LTspice File	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	no	no
Features	Resistor Set Frequency, External Synchronization, Power On Reset, Watchdog Timer, Tracking, Power Good, Soft Start	Resistor Set Frequency, External Synchronization, Power On Reset, Watchdog Timer, Tracking, Power Good, Soft Start	Resistor Set Frequency, External Synchronization, Power On Reset, Watchdog Timer, Tracking, Power Good, Soft Start	Resistor Set Frequency, External Synchronization, Power On Reset, Watchdog Timer, Tracking, Power Good, Soft Start	Resistor Set Frequency, External Synchronization, Power On Reset, Watchdog Timer, Tracking, Power Good, Soft Start	Resistor Set Frequency, External Synchronization, Power On Reset, Watchdog Timer, Tracking, Power Good, Soft Start	Resistor Set Frequency, External Synchronization, Power On Reset, Watchdog Timer, Tracking, Power Good, Soft Start	Resistor Set Frequency, External Synchronization, Power On Reset, Watchdog Timer, Tracking, Power Good, Soft Start	Resistor Set Frequency, External Synchronization, Power On Reset, Watchdog Timer, Tracking, Power Good, Soft Start	Resistor Set Frequency, External Synchronization, Power On Reset, Watchdog Timer, Tracking, Power Good, Soft Start
Frequency, kHz	2500	2500	2500	2500	2500	2500	2500	2500	2500	2500
Frequency Adjust Range	350kHz - 2.5MHz	350kHz - 2.5MHz	350kHz - 2.5MHz	350kHz - 2.5MHz	350kHz - 2.5MHz	350kHz - 2.5MHz	350kHz - 2.5MHz	350kHz - 2.5MHz	350kHz - 2.5MHz	350kHz - 2.5MHz
Frequency Sync Range	350kHz - 2.5MHz	350kHz - 2.5MHz	350kHz - 2.5MHz	350kHz - 2.5MHz	350kHz - 2.5MHz	350kHz - 2.5MHz	350kHz - 2.5MHz	350kHz - 2.5MHz	350kHz - 2.5MHz	350kHz - 2.5MHz
Integrated Inductor	no	no	no	no	no	no	no	no	no	no
Ishutdown, µA	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1
Isupply, mA	0.275	0.275	0.275	0.275	0.275	0.275	0.275	0.275	0.275	0.275
Max Phases	1	1	1	1	1	1	1	1	1	1
Monolithic	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Number of Outputs	2	2	2	2	2	2	2	2	2	2
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85	-40 to 125	-40 to 125	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Output Current, A	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3
Output Current 2, A	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1
Over Voltage Protection, V	55	55	55	55	55	55	55	55	55	55
Polyphase	no	no	no	no	no	no	no	no	no	no
Switch Current, A	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8
Switch Current 2, A	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7
Synchronous	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Topology	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck
Topology 1	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck
Topology 2	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck
Vin Max, V	42	42	42	42	42	42	42	42	42	42
Vin Min, V	4	4	4	4	4	4	4	4	4	4
Vout Max, V	40.97	40.97	40.97	40.97	40.97	40.97	40.97	40.97	40.97	40.97
Vout Maximum	0.97Vin	0.97Vin	0.97Vin	0.97Vin	0.97Vin	0.97Vin	0.97Vin	0.97Vin	0.97Vin	0.97Vin
Vout Min, V	1.265	1.265	1.265	1.265	1.265	1.265	1.265	1.265	1.265	1.265
Vout Min 2, V	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6
Vref Accuracy Over Temp, %	2	2	2	2	2	2	2	2	2	2

Eco Plan

	LT3641EFE#PBF	LT3641EFE#TRPBF	LT3641EUFD#PBF	LT3641EUFD#TRPBF	LT3641HFE#PBF	LT3641HFE#TRPBF	LT3641IFE#PBF	LT3641IFE#TRPBF	LT3641IUFD#PBF	LT3641IUFD#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Model Line

Series: LT3641 (10)

LT3641EFE#PBF LT3641EFE#TRPBF LT3641EUFD#PBF LT3641EUFD#TRPBF LT3641HFE#PBF LT3641HFE#TRPBF LT3641IFE#PBF LT3641IFE#TRPBF LT3641IUFD#PBF LT3641IUFD#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | Internal Power Switch Buck | High Input Voltage Buck
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators