Datasheet Linear Technology LTC3869

Manufacturer	Linear Technology
Series	LTC3869

Dual, 2-Phase Synchronous Step-Down DC/DC Controllers

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Dual, 2-Phase Synchronous Step-Down DC/DC Controllers

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Packaging

	LTC3869EUF#PBF	LTC3869EUF#TRPBF	LTC3869EUFD#PBF	LTC3869EUFD#TRPBF	LTC3869IGN-2#PBF	LTC3869IGN-2#TRPBF	LTC3869IUF#PBF	LTC3869IUF#TRPBF	LTC3869IUFD#PBF	LTC3869IUFD#TRPBF
N	1	2	3	4	5	6	7	8	9	10
Package	4x4 QFN-28 Package Outline Drawing	4x4 QFN-28 Package Outline Drawing	4x5 QFN-28 Package Outline Drawing	4x5 QFN-28 Package Outline Drawing	SSOP-28 Package Outline Drawing	SSOP-28 Package Outline Drawing	4x4 QFN-28 Package Outline Drawing	4x4 QFN-28 Package Outline Drawing	4x5 QFN-28 Package Outline Drawing	4x5 QFN-28 Package Outline Drawing
Package Code	UF	UF	UFD	UFD	GN	GN	UF	UF	UFD	UFD
Package Index	05-08-1721	05-08-1721	05-08-1712	05-08-1712	05-08-1641 (GN28)	05-08-1641 (GN28)	05-08-1721	05-08-1721	05-08-1712	05-08-1712
Pin Count	28	28	28	28	28	28	28	28	28	28

Parametrics

Parameters / Models	LTC3869EUF#PBF	LTC3869EUF#TRPBF	LTC3869EUFD#PBF	LTC3869EUFD#TRPBF	LTC3869IGN-2#PBF	LTC3869IGN-2#TRPBF	LTC3869IUF#PBF	LTC3869IUF#TRPBF	LTC3869IUFD#PBF	LTC3869IUFD#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	DC1798A-A,DC1798A-B,DC1807A-A,DC1807A-B	DC1798A-A,DC1798A-B,DC1807A-A,DC1807A-B	DC1798A-A,DC1798A-B,DC1807A-A,DC1807A-B	DC1798A-A,DC1798A-B,DC1807A-A,DC1807A-B	DC1798A-A,DC1798A-B,DC1807A-A,DC1807A-B	DC1798A-A,DC1798A-B,DC1807A-A,DC1807A-B	DC1798A-A,DC1798A-B,DC1807A-A,DC1807A-B	DC1798A-A,DC1798A-B,DC1807A-A,DC1807A-B	DC1798A-A,DC1798A-B,DC1807A-A,DC1807A-B	DC1798A-A,DC1798A-B,DC1807A-A,DC1807A-B
Design Tools	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File
Export Control	no	no	no	no	no	no	no	no	no	no
Features	PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Tracking, Power Good	PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Tracking, Power Good	PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Tracking, Power Good	PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Tracking, Power Good	PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Tracking, Power Good	PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Tracking, Power Good	PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Tracking, Power Good	PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Tracking, Power Good	PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Tracking, Power Good	PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Tracking, Power Good
Frequency, kHz	780	780	780	780	780	780	780	780	780	780
Frequency Adjust Range	250kHz - 780kHz	250kHz - 780kHz	250kHz - 780kHz	250kHz - 780kHz	250kHz - 780kHz	250kHz - 780kHz	250kHz - 780kHz	250kHz - 780kHz	250kHz - 780kHz	250kHz - 780kHz
Frequency Sync Range	250kHz - 780kHz	250kHz - 780kHz	250kHz - 780kHz	250kHz - 780kHz	250kHz - 780kHz	250kHz - 780kHz	250kHz - 780kHz	250kHz - 780kHz	250kHz - 780kHz	250kHz - 780kHz
Integrated Inductor	no	no	no	no	no	no	no	no	no	no
Ishutdown, µA	30	30	30	30	30	30	30	30	30	30
Isupply, mA	3	3	3	3	3	3	3	3	3	3
Max Phases	2	2	2	2	2	2	2	2	2	2
Monolithic	no	no	no	no	no	no	no	no	no	no
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 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Output Current, A	30	30	30	30	30	30	30	30	30	30
Output Current 2, A	30	30	30	30	30	30	30	30	30	30
Polyphase	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Sense Resistor	Rsense, DCR	Rsense, DCR	Rsense, DCR	Rsense, DCR	Rsense, DCR	Rsense, DCR	Rsense, DCR	Rsense, DCR	Rsense, DCR	Rsense, DCR
Switch Current, A	30	30	30	30	30	30	30	30	30	30
Switch Current 2, A	30	30	30	30	30	30	30	30	30	30
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	38	38	38	38	38	38	38	38	38	38
Vin Min, V	4	4	4	4	4	4	4	4	4	4
Vout Max, V	12.5	12.5	12.5	12.5	12.5	12.5	12.5	12.5	12.5	12.5
Vout Maximum	12.5V	12.5V	12.5V	12.5V	12.5V	12.5V	12.5V	12.5V	12.5V	12.5V
Vout Min, V	0.6	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	0.6
Vref Accuracy Over Temp, %	0.75	0.75	0.75	0.75	0.75	0.75	0.75	0.75	0.75	0.75

Eco Plan

	LTC3869EUF#PBF	LTC3869EUF#TRPBF	LTC3869EUFD#PBF	LTC3869EUFD#TRPBF	LTC3869IGN-2#PBF	LTC3869IGN-2#TRPBF	LTC3869IUF#PBF	LTC3869IUF#TRPBF	LTC3869IUFD#PBF	LTC3869IUFD#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Model Line

Series: LTC3869 (10)

LTC3869EUF#PBF LTC3869EUF#TRPBF LTC3869EUFD#PBF LTC3869EUFD#TRPBF LTC3869IGN-2#PBF LTC3869IGN-2#TRPBF LTC3869IUF#PBF LTC3869IUF#TRPBF LTC3869IUFD#PBF LTC3869IUFD#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | High Input Voltage Buck | External Power Switch Buck Controllers