LT1956IFE#TRPBF

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Analog Devices Inc./Maxim Integrated

HIGH VOLTAGE, 1.5A, 500KHZ STEP-DOWN SWITCHING REGULATORS

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LT1956IFE#TRPBF

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Analog Devices Inc./Maxim Integrated

HIGH VOLTAGE, 1.5A, 500KHZ STEP-DOWN SWITCHING REGULATORS

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT1956 Series

The LT1956/LT1956-5 are 500kHz monolithic buck switching regulators with an input voltage capability up to 60V. A high efficiency 1.5A, 0.2Ω switch is included on the die along with all the necessary oscillator, control and logic circuitry. A current mode architecture provides fast transient response and good loop stability.Special design techniques and a new high voltage process achieve high efficiency over a wide input range. Efficiency is maintained over a wide output current range by using the output to bias the circuitry and by utilizing a supply boost capacitor to saturate the power switch. Patented circuitry maintains peak switch current over the full duty cycle range*. A shutdown pin reduces supply current to 25µA and the device can be externally synchronized from 580kHz to 700kHz with a logic level input.The LT1956/LT1956-5 are available in fused-lead 16-pin SSOP and thermally enhanced TSSOP packages.ApplicationsHigh Voltage, Industrial and AutomotivePortable ComputersBattery-Powered SystemsBattery ChargersDistributed Power Systems

Technical Specifications

Parameters and characteristics for this part

Specification	LT1956IFE#TRPBF

Current - Output	1.5 A
Frequency - Switching	500 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package Features	Exposed Pad
Package Length	0.173 in
Package Name	16-TSSOP, 16-TSSOP-EP
Package Width	4.4 mm
Synchronous Rectifier	No
Topology	Buck
Voltage - Input (Max)	60 V
Voltage - Input (Min)	5.5 V
Voltage - Output (Max)	54 V
Voltage - Output (Min/Fixed)	1.219 V

LT1956 Series

Part	Voltage - Output (Min/Fixed)	Current - Output	Topology	Frequency - Switching	Output Configuration	Mounting Type	Output Type	Number of Outputs	Package Name	Operating Temperature (Max)	Operating Temperature (Min)	Synchronous Rectifier	Voltage - Input (Max)	Function	Voltage - Input (Min)	Package Width	Package Length	Voltage - Output (Max)	Package Features
Analog Devices Inc./Maxim Integrated LT1956EGN-5#TRPBF	5 V	1.5 A	Buck	500 kHz	Positive	Surface Mount	Fixed	1	16-SSOP	125 °C	0 °C	No	60 V	Step-Down	5.5 V	3.9 mm	0.154 in
Analog Devices Inc./Maxim Integrated LT1956IFE#PBF	1.219 V	1.5 A	Buck	500 kHz	Positive	Surface Mount	Adjustable	1	16-TSSOP 16-TSSOP-EP	125 °C	-40 °C	No	60 V	Step-Down	5.5 V	4.4 mm	0.173 in	54 V	Exposed Pad
Analog Devices Inc./Maxim Integrated LT1956EFE#TRPBF	1.219 V	1.5 A	Buck	500 kHz	Positive	Surface Mount	Adjustable	1	16-TSSOP 16-TSSOP-EP	125 °C	0 °C	No	60 V	Step-Down	5.5 V	4.4 mm	0.173 in	54 V	Exposed Pad
Analog Devices Inc./Maxim Integrated LT1956EFE-5#PBF	5 V	1.5 A	Buck	500 kHz	Positive	Surface Mount	Fixed	1	16-TSSOP 16-TSSOP-EP	125 °C	0 °C	No	60 V	Step-Down	5.5 V	4.4 mm	0.173 in		Exposed Pad
Analog Devices Inc./Maxim Integrated LT1956EGN#TRPBF	1.219 V	1.5 A	Buck	500 kHz	Positive	Surface Mount	Adjustable	1	16-SSOP	125 °C	0 °C	No	60 V	Step-Down	5.5 V	3.9 mm	0.154 in	54 V
Analog Devices Inc./Maxim Integrated LT1956IGN-5#TRPBF	5 V	1.5 A	Buck	500 kHz	Positive	Surface Mount	Fixed	1	16-SSOP	125 °C	-40 °C	No	60 V	Step-Down	5.5 V	3.9 mm	0.154 in
Analog Devices Inc./Maxim Integrated LT1956EFE#PBF	1.219 V	1.5 A	Buck	500 kHz	Positive	Surface Mount	Adjustable	1	16-TSSOP 16-TSSOP-EP	125 °C	0 °C	No	60 V	Step-Down	5.5 V	4.4 mm	0.173 in	54 V	Exposed Pad
Analog Devices Inc./Maxim Integrated LT1956IFE-5#TRPBF	5 V	1.5 A	Buck	500 kHz	Positive	Surface Mount	Fixed	1	16-TSSOP 16-TSSOP-EP	125 °C	-40 °C	No	60 V	Step-Down	5.5 V	4.4 mm	0.173 in		Exposed Pad
Analog Devices Inc./Maxim Integrated LT1956IGN-5#PBF	5 V	1.5 A	Buck	500 kHz	Positive	Surface Mount	Fixed	1	16-SSOP	125 °C	-40 °C	No	60 V	Step-Down	5.5 V	3.9 mm	0.154 in
Analog Devices Inc./Maxim Integrated LT1956IFE#TRPBF	1.219 V	1.5 A	Buck	500 kHz	Positive	Surface Mount	Adjustable	1	16-TSSOP 16-TSSOP-EP	125 °C	-40 °C	No	60 V	Step-Down	5.5 V	4.4 mm	0.173 in	54 V	Exposed Pad

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

SCP-LT1956-IEVALZ - Demo Manual (Rev.0)

R365 Reliability Data

LT1956IFE#TRPBF | Datasheet

Tape and Reel Packaging