Datasheet Linear Technology LTC3872

Manufacturer	Linear Technology
Series	LTC3872

No RSENSE Current Mode Boost DC/DC Controller

Datasheets

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PDF, 257 Kb, Revision: C, File uploaded: Sep 24, 2017

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Packaging

	LTC3872EDDB#PBF	LTC3872EDDB#TRMPBF	LTC3872EDDB#TRPBF	LTC3872ETS8#PBF	LTC3872ETS8#TRMPBF	LTC3872ETS8#TRPBF	LTC3872HDDB#PBF	LTC3872HDDB#TRMPBF	LTC3872HDDB#TRPBF	LTC3872HTS8#PBF	LTC3872HTS8#TRMPBF	LTC3872HTS8#TRPBF	LTC3872IDDB#PBF	LTC3872IDDB#TRMPBF	LTC3872IDDB#TRPBF	LTC3872ITS8#PBF	LTC3872ITS8#TRMPBF	LTC3872ITS8#TRPBF
N	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
Package	3x2 DFN-8 Package Outline Drawing	3x2 DFN-8 Package Outline Drawing	3x2 DFN-8 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	3x2 DFN-8 Package Outline Drawing	3x2 DFN-8 Package Outline Drawing	3x2 DFN-8 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	3x2 DFN-8 Package Outline Drawing	3x2 DFN-8 Package Outline Drawing	3x2 DFN-8 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing
Package Code	DDB	DDB	DDB	TS8	TS8	TS8	DDB	DDB	DDB	TS8	TS8	TS8	DDB	DDB	DDB	TS8	TS8	TS8
Package Index	05-08-1702	05-08-1702	05-08-1702	05-08-1637	05-08-1637	05-08-1637	05-08-1702	05-08-1702	05-08-1702	05-08-1637	05-08-1637	05-08-1637	05-08-1702	05-08-1702	05-08-1702	05-08-1637	05-08-1637	05-08-1637
Pin Count	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8

Parametrics

Parameters / Models	LTC3872EDDB#PBF	LTC3872EDDB#TRMPBF	LTC3872EDDB#TRPBF	LTC3872ETS8#PBF	LTC3872ETS8#TRMPBF	LTC3872ETS8#TRPBF	LTC3872HDDB#PBF	LTC3872HDDB#TRMPBF	LTC3872HDDB#TRPBF	LTC3872HTS8#PBF	LTC3872HTS8#TRMPBF	LTC3872HTS8#TRPBF	LTC3872IDDB#PBF	LTC3872IDDB#TRMPBF	LTC3872IDDB#TRPBF	LTC3872ITS8#PBF	LTC3872ITS8#TRMPBF	LTC3872ITS8#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	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	DC989B-A	DC989B-A	DC989B-A	DC989B-A	DC989B-A	DC989B-A	DC989B-A	DC989B-A	DC989B-A	DC989B-A	DC989B-A	DC989B-A	DC989B-A	DC989B-A	DC989B-A	DC989B-A	DC989B-A	DC989B-A
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	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	no	no	no	no	no	no	no	no
Features	No Rsense	No Rsense	No Rsense	No Rsense	No Rsense	No Rsense	No Rsense	No Rsense	No Rsense	No Rsense	No Rsense	No Rsense	No Rsense	No Rsense	No Rsense	No Rsense	No Rsense	No Rsense
Frequency, kHz	750	750	750	750	750	750	750	750	750	750	750	750	750	750	750	750	750	750
Integrated Inductor	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no
Ishutdown, µA	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8
Isupply, mA	0.25	0.25	0.25	0.25	0.25	0.25	0.25	0.25	0.25	0.25	0.25	0.25	0.25	0.25	0.25	0.25	0.25	0.25
Max Phases	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Monolithic	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no
Number of Outputs	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Polyphase	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no
Sense Resistor	None	None	None	None	None	None	None	None	None	None	None	None	None	None	None	None	None	None
Switch Current, A	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10
Synchronous	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no
Topology	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback
Topology 1	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback
Vin Max, V	9.8	9.8	9.8	9.8	9.8	9.8	9.8	9.8	9.8	9.8	9.8	9.8	9.8	9.8	9.8	9.8	9.8	9.8
Vin Min, V	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75
Vin Min Startup, V	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75	2.75
Vout Max, V	60	60	60	60	60	60	60	60	60	60	60	60	60	60	60	60	60	60
Vout Maximum	60V	60V	60V	60V	60V	60V	60V	60V	60V	60V	60V	60V	60V	60V	60V	60V	60V	60V
Vout Min, V	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2
Vswitch Max, V	60	60	60	60	60	60	60	60	60	60	60	60	60	60	60	60	60	60

Eco Plan

	LTC3872EDDB#PBF	LTC3872EDDB#TRMPBF	LTC3872EDDB#TRPBF	LTC3872ETS8#PBF	LTC3872ETS8#TRMPBF	LTC3872ETS8#TRPBF	LTC3872HDDB#PBF	LTC3872HDDB#TRMPBF	LTC3872HDDB#TRPBF	LTC3872HTS8#PBF	LTC3872HTS8#TRMPBF	LTC3872HTS8#TRPBF	LTC3872IDDB#PBF	LTC3872IDDB#TRMPBF	LTC3872IDDB#TRPBF	LTC3872ITS8#PBF	LTC3872ITS8#TRMPBF	LTC3872ITS8#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Articles

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Miniscule Step-Up Controller Yields Wide Input and Output Ranges &mdash LT Journal
PDF, 291 Kb, File published: Nov 22, 2006
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DESIGN IDEASвЂ‰L Miniscule Step-Up Controller Yields
Wide Input and Output Ranges
by Theo Phillips and Hong Ren
Introduction Space-Saving Design 17.4k
1%
ITH 47pF LTC3872
GND
11k
1% 34.8k
1% VIN VFB CIN2
470ВµF VIN
3.3V SW
M1 CIN
1nF controllers that use a constant on-time
switching scheme, which can result
in a lower operating frequency and
physically larger filter components.
No RSENSEв„ў technology eliminates
the need for a separate current-D1 COUT
100ВµF
x2 VOUT
5V
2A 100 10 90 …

Model Line

Series: LTC3872 (18)

LTC3872EDDB#PBF LTC3872EDDB#TRMPBF LTC3872EDDB#TRPBF LTC3872ETS8#PBF LTC3872ETS8#TRMPBF LTC3872ETS8#TRPBF LTC3872HDDB#PBF LTC3872HDDB#TRMPBF LTC3872HDDB#TRPBF LTC3872HTS8#PBF LTC3872HTS8#TRMPBF LTC3872HTS8#TRPBF LTC3872IDDB#PBF LTC3872IDDB#TRMPBF LTC3872IDDB#TRPBF LTC3872ITS8#PBF LTC3872ITS8#TRMPBF LTC3872ITS8#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > SEPIC Regulators
Power Management > Switching Regulator > Step-Up (Boost) Regulators > External Power Switch Boost
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators