Datasheet Linear Technology LTC3122

Manufacturer	Linear Technology
Series	LTC3122

15V, 2.5A Synchronous Step-Up DC/DC Converter with Output Disconnect

Datasheets

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PDF, 512 Kb, Language: en, File uploaded: Sep 20, 2017, Pages: 26
15V, 2.5A Synchronous Step-Up DC/DC Converter with Output Disconnect

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Packaging

	LTC3122EDE#PBF	LTC3122EDE#TRPBF	LTC3122EMSE#PBF	LTC3122EMSE#TRPBF	LTC3122HMSE#PBF	LTC3122HMSE#TRPBF	LTC3122IDE#PBF	LTC3122IDE#TRPBF	LTC3122IMSE#PBF	LTC3122IMSE#TRPBF
N	1	2	3	4	5	6	7	8	9	10
Package	4x3 DFN-12 Package Outline Drawing	4x3 DFN-12 Package Outline Drawing	MS-12E Package Outline Drawing	MS-12E Package Outline Drawing	MS-12E Package Outline Drawing	MS-12E Package Outline Drawing	4x3 DFN-12 Package Outline Drawing	4x3 DFN-12 Package Outline Drawing	MS-12E Package Outline Drawing	MS-12E Package Outline Drawing
Package Code	DE/UE	DE/UE	MSE	MSE	MSE	MSE	DE/UE	DE/UE	MSE	MSE
Package Index	05-08-1695	05-08-1695	05-08-1666	05-08-1666	05-08-1666	05-08-1666	05-08-1695	05-08-1695	05-08-1666	05-08-1666
Pin Count	12	12	12	12	12	12	12	12	12	12

Parametrics

Parameters / Models	LTC3122EDE#PBF	LTC3122EDE#TRPBF	LTC3122EMSE#PBF	LTC3122EMSE#TRPBF	LTC3122HMSE#PBF	LTC3122HMSE#TRPBF	LTC3122IDE#PBF	LTC3122IDE#TRPBF	LTC3122IMSE#PBF	LTC3122IMSE#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	DC1764A	DC1764A	DC1764A	DC1764A	DC1764A	DC1764A	DC1764A	DC1764A	DC1764A	DC1764A
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	Burst Mode, Output Disconnect, Resistor Set Frequency, External Synchronization	Burst Mode, Output Disconnect, Resistor Set Frequency, External Synchronization	Burst Mode, Output Disconnect, Resistor Set Frequency, External Synchronization	Burst Mode, Output Disconnect, Resistor Set Frequency, External Synchronization	Burst Mode, Output Disconnect, Resistor Set Frequency, External Synchronization	Burst Mode, Output Disconnect, Resistor Set Frequency, External Synchronization	Burst Mode, Output Disconnect, Resistor Set Frequency, External Synchronization	Burst Mode, Output Disconnect, Resistor Set Frequency, External Synchronization	Burst Mode, Output Disconnect, Resistor Set Frequency, External Synchronization	Burst Mode, Output Disconnect, Resistor Set Frequency, External Synchronization
Frequency, kHz	3000	3000	3000	3000	3000	3000	3000	3000	3000	3000
Frequency Adjust Range	Up to 3MHz	Up to 3MHz	Up to 3MHz	Up to 3MHz	Up to 3MHz	Up to 3MHz	Up to 3MHz	Up to 3MHz	Up to 3MHz	Up to 3MHz
Frequency Sync Range	Up to 3MHz	Up to 3MHz	Up to 3MHz	Up to 3MHz	Up to 3MHz	Up to 3MHz	Up to 3MHz	Up to 3MHz	Up to 3MHz	Up to 3MHz
Integrated Inductor	no	no	no	no	no	no	no	no	no	no
Ishutdown, µA	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01
Isupply, mA	0.025	0.025	0.025	0.025	0.025	0.025	0.025	0.025	0.025	0.025
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	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	-40 to 125	-40 to 125	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Polyphase	no	no	no	no	no	no	no	no	no	no
Switch Current, A	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5
Synchronous	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Topology	Boost	Boost	Boost	Boost	Boost	Boost	Boost	Boost	Boost	Boost
Vin Max, V	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5
Vin Min, V	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5
Vin Min Startup, V	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7
Vout Max, V	15	15	15	15	15	15	15	15	15	15
Vout Maximum	15V	15V	15V	15V	15V	15V	15V	15V	15V	15V
Vout Min, V	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2
Vswitch Max, V	15	15	15	15	15	15	15	15	15	15

Eco Plan

	LTC3122EDE#PBF	LTC3122EDE#TRPBF	LTC3122EMSE#PBF	LTC3122EMSE#TRPBF	LTC3122HMSE#PBF	LTC3122HMSE#TRPBF	LTC3122IDE#PBF	LTC3122IDE#TRPBF	LTC3122IMSE#PBF	LTC3122IMSE#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Design Notes

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1ОјA IQ Synchronous Boost Converter Extends Battery Life in Portable Devices &mdash DN516
PDF, 309 Kb, File published: May 29, 2013
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1ВµA IQ Synchronous Boost Converter Extends Battery Life in
Portable Devices
Design Note 516
Goran Perica
Introduction
Boost converters are regularly used in portable devices to produce higher output voltages from lower
battery input voltages. Common battery configurations include two to three alkaline or NiMH cells or,
increasingly, Li-Ion batteries, yielding a typical input
voltage between 1.8V and 4.8V. Because the batteries used in portable devices are
usually as small as possible, they present high internal impedance under heavy loads, especially close to
the end of their discharge cycle. Unlike other boost
converters that struggle with high source impedance
at startup, the LTC3122 prevents high surge currents
at startup. The 12V output converter shown in Figure 1 is designed
to run from any typical small battery power source. This
design centers around the LTCВ®3122 boost converter,
which can efficiently generate a regulated output
up to 15V from a 1.8V to 5.5V input. The LTC3122
includes a 2.5A internal switch current limit and a full
complement of features to handle demanding boost
applications, including switching frequency programming, undervoltage lockout, Burst ModeВ® operation or
continuous switching mode, and true output disconnect.
The integrated synchronous rectifier is turned off when …

Model Line

Series: LTC3122 (10)

LTC3122EDE#PBF LTC3122EDE#TRPBF LTC3122EMSE#PBF LTC3122EMSE#TRPBF LTC3122HMSE#PBF LTC3122HMSE#TRPBF LTC3122IDE#PBF LTC3122IDE#TRPBF LTC3122IMSE#PBF LTC3122IMSE#TRPBF

Manufacturer's Classification

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