Datasheet Linear Technology LTC3547B

Manufacturer	Linear Technology
Series	LTC3547B

Dual Monolithic 300mA Synchronous Step-Down Regulator

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Dual Monolithic 300mA Synchronous Step-Down Regulator

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Packaging

	LTC3547BEDDB#PBF	LTC3547BEDDB#TRMPBF	LTC3547BEDDB#TRPBF	LTC3547BEDDB-1#PBF	LTC3547BEDDB-1#TRMPBF	LTC3547BEDDB-1#TRPBF	LTC3547BIDDB#PBF	LTC3547BIDDB#TRMPBF	LTC3547BIDDB#TRPBF
N	1	2	3	4	5	6	7	8	9
Package	3x2 DFN-8 Package Outline Drawing	3x2 DFN-8 Package Outline Drawing	3x2 DFN-8 Package Outline Drawing	3x2 DFN-8 Package Outline Drawing	3x2 DFN-8 Package Outline Drawing	3x2 DFN-8 Package Outline Drawing	3x2 DFN-8 Package Outline Drawing	3x2 DFN-8 Package Outline Drawing	3x2 DFN-8 Package Outline Drawing
Package Code	DDB	DDB	DDB	DDB	DDB	DDB	DDB	DDB	DDB
Package Index	05-08-1702	05-08-1702	05-08-1702	05-08-1702	05-08-1702	05-08-1702	05-08-1702	05-08-1702	05-08-1702
Pin Count	8	8	8	8	8	8	8	8	8

Parametrics

Parameters / Models	LTC3547BEDDB#PBF	LTC3547BEDDB#TRMPBF	LTC3547BEDDB#TRPBF	LTC3547BEDDB-1#PBF	LTC3547BEDDB-1#TRMPBF	LTC3547BEDDB-1#TRPBF	LTC3547BIDDB#PBF	LTC3547BIDDB#TRMPBF	LTC3547BIDDB#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
Demo Boards	DC1013A	DC1013A	DC1013A	DC1013A	DC1013A	DC1013A	DC1013A	DC1013A	DC1013A
Design Tools	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model
Export Control	no	no	no	no	no	no	no	no	no
Features	Fixed Output, 100% Duty Cycle	Fixed Output, 100% Duty Cycle	Fixed Output, 100% Duty Cycle	Fixed Output, 100% Duty Cycle	Fixed Output, 100% Duty Cycle	Fixed Output, 100% Duty Cycle	Fixed Output, 100% Duty Cycle	Fixed Output, 100% Duty Cycle	Fixed Output, 100% Duty Cycle
Frequency, kHz	2250	2250	2250	2250	2250	2250	2250	2250	2250
Integrated Inductor	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
Isupply, mA	0.45	0.45	0.45	0.45	0.45	0.45	0.45	0.45	0.45
Max Phases	1	1	1	1	1	1	1	1	1
Monolithic	yes	yes	yes	yes	yes	yes	yes	yes	yes
Number of Outputs	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	0 to 85	0 to 85	-40 to 85	-40 to 85	-40 to 85
Output Current, A	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3
Output Current 2, A	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3
Polyphase	no	no	no	no	no	no	no	no	no
Switch Current, A	0.55	0.55	0.55	0.55	0.55	0.55	0.55	0.55	0.55
Switch Current 2, A	0.55	0.55	0.55	0.55	0.55	0.55	0.55	0.55	0.55
Synchronous	yes	yes	yes	yes	yes	yes	yes	yes	yes
Topology	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck
Topology 1	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck
Topology 2	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck
Vin Max, V	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5
Vin Min, V	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5
Vout Max, V	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5
Vout Maximum	Vin	Vin	Vin	Vin	Vin	Vin	Vin	Vin	Vin
Vout Min, V	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6
Vout Min 2, V	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

Eco Plan

	LTC3547BEDDB#PBF	LTC3547BEDDB#TRMPBF	LTC3547BEDDB#TRPBF	LTC3547BEDDB-1#PBF	LTC3547BEDDB-1#TRMPBF	LTC3547BEDDB-1#TRPBF	LTC3547BIDDB#PBF	LTC3547BIDDB#TRMPBF	LTC3547BIDDB#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Model Line

Series: LTC3547B (9)

LTC3547BEDDB#PBF LTC3547BEDDB#TRMPBF LTC3547BEDDB#TRPBF LTC3547BEDDB-1#PBF LTC3547BEDDB-1#TRMPBF LTC3547BEDDB-1#TRPBF LTC3547BIDDB#PBF LTC3547BIDDB#TRMPBF LTC3547BIDDB#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | Internal Power Switch Buck