LT3081IDF#PBF

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Analog Devices Inc./Maxim Integrated

1.5A SINGLE RESISTOR RUGGED LINEAR REGULATOR WITH MONITORS

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LT3081IDF#PBF

Active

Analog Devices Inc./Maxim Integrated

1.5A SINGLE RESISTOR RUGGED LINEAR REGULATOR WITH MONITORS

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT3081 Series

The LT3081 is a 1.5A low dropout linear regulator designed for rugged industrial applications. Key features of the IC are the extended safe operating area (SOA), output current monitor, temperature monitor and programmable current limit. The LT3081 can be paralleled for higher output current or heat spreading. The device withstands reverse input and reverse output-to-input voltages without reverse current flow.The LT3081’s precision 50μA reference current source allows a single resistor to program output voltage to any level between zero and 34.5V. The current reference architecture makes load regulation independent of output voltage. The LT3081 is stable with or without input and output capacitors.The output current monitor (IOUT/5000) and die junction temperature output (1μA/°C) provide system monitoring and debug capability. In addition, a single resistor programs current limit.Internal protection circuitry includes reverse-battery and reverse-current protection, current limiting and thermal limiting. The LT3081 is offered in the 16-lead TSSOP (with exposed pad for improved thermal performance), 7-lead TO-220, 7-lead DD-Pak, and an 12-lead 4mm × 4mm DFN.ApplicationsAll Surface Mount Power SupplyRugged Industrial Power SupplyPost Regulator for Switching SuppliesLow Output Voltage SupplyIntrinsic Safety Applications

Technical Specifications

Parameters and characteristics for this part

Specification	LT3081IDF#PBF

Control Features	Current Limit
Current - Output	1.5 A
Current - Quiescent (Iq)	50 µA
Current - Supply (Max)	5 mA
Mounting Type	Surface Mount
Number of Regulators	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	12-WFDFN Exposed Pad
Package Length	4 mm
Package Name	12-DFN
Package Width	4 mm
Protection Features	Reverse Polarity, Short Circuit, Over Current, Over Temperature
PSRR (Maximum)	90 dB
PSRR (Minimum)	20 dB
Voltage - Input (Max)	36 V
Voltage - Output (Max)	34.5 V
Voltage - Output (Min/Fixed)	0 V
Voltage Dropout (Max)	1.5 V

LT3081 Series

1.5A Single Resistor Rugged Linear Regulator with Monitors

Part	Control Features	Output Type	Mounting Type	Package Name	Number of Regulators	Current - Output	Voltage Dropout (Max)	PSRR (Minimum)	PSRR (Maximum)	Voltage - Output (Max)	Protection Features	Package / Case	Current - Quiescent (Iq)	Output Configuration	Operating Temperature (Max)	Operating Temperature (Min)	Voltage - Input (Max)	Current - Supply (Max)	Package Width	Package Features	Package Length	Package Leads
Analog Devices Inc./Maxim Integrated LT3081IT7#PBF	Current Limit	Adjustable	Through Hole	TO-220-7	1	1.5 A	1.5 V	20 dB	90 dB	34.5 V	Over Current Over Temperature Reverse Polarity Short Circuit	TO-220-7 Formed Leads	50 µA	Positive	125 °C	-40 °C	36 V	5 mA
Analog Devices Inc./Maxim Integrated LT3081IFE#TRPBF	Current Limit	Adjustable	Surface Mount	16-TSSOP 16-TSSOP-EP	1	1.5 A	1.5 V	20 dB	90 dB	34.5 V	Over Current Over Temperature Reverse Polarity Short Circuit		50 µA	Positive	125 °C	-40 °C	36 V	5 mA	4.4 mm	Exposed Pad	0.173 in
Analog Devices Inc./Maxim Integrated LT3081ET7#06PBF	Current Limit	Adjustable	Through Hole	TO-220-7 Flow 6	1	1.5 A	1.5 V	20 dB	90 dB	34.5 V	Over Current Over Temperature Reverse Polarity Short Circuit	TO-220-7	50 µA	Positive	125 °C	-40 °C	36 V	5 mA
Analog Devices Inc./Maxim Integrated LT3081ER#TRPBF	Current Limit	Adjustable	Surface Mount	D2PAK DDPAK-7	1	1.5 A	1.5 V	20 dB	90 dB	34.5 V	Over Current Over Temperature Reverse Polarity Short Circuit		50 µA	Positive	125 °C	-40 °C	36 V	5 mA				7 Leads
Analog Devices Inc./Maxim Integrated LT3081MPFE#TRPBF	Current Limit	Adjustable	Surface Mount	16-TSSOP 16-TSSOP-EP	1	1.5 A	1.5 V	20 dB	90 dB	34.5 V	Over Current Over Temperature Reverse Polarity Short Circuit		50 µA	Positive	125 °C 150 °C	-55 °C	36 V	5 mA	4.4 mm	Exposed Pad	0.173 in
Analog Devices Inc./Maxim Integrated LT3081MPFE#PBF	Current Limit	Adjustable	Surface Mount	16-TSSOP 16-TSSOP-EP	1	1.5 A	1.5 V	20 dB	90 dB	34.5 V	Over Current Over Temperature Reverse Polarity Short Circuit		50 µA	Positive	150 °C	-55 °C	36 V	5 mA	4.4 mm	Exposed Pad	0.173 in
Analog Devices Inc./Maxim Integrated LT3081IFE#PBF	Current Limit	Adjustable	Surface Mount	16-TSSOP 16-TSSOP-EP	1	1.5 A	1.5 V	20 dB	90 dB	34.5 V	Over Current Over Temperature Reverse Polarity Short Circuit		50 µA	Positive	125 °C	-40 °C	36 V	5 mA	4.4 mm	Exposed Pad	0.173 in
Analog Devices Inc./Maxim Integrated LT3081ER#PBF	Current Limit	Adjustable	Surface Mount	D2PAK DDPAK-7	1	1.5 A	1.5 V	20 dB	90 dB	34.5 V	Over Current Over Temperature Reverse Polarity Short Circuit		50 µA	Positive	125 °C	-40 °C	36 V	5 mA				7 Leads
Analog Devices Inc./Maxim Integrated LT3081IDF#PBF	Current Limit	Adjustable	Surface Mount	12-DFN	1	1.5 A	1.5 V	20 dB	90 dB	34.5 V	Over Current Over Temperature Reverse Polarity Short Circuit	12-WFDFN Exposed Pad	50 µA	Positive	125 °C	-40 °C	36 V	5 mA	4 mm		4 mm
Analog Devices Inc./Maxim Integrated LT3081EDF#TRPBF	Current Limit	Adjustable	Surface Mount	12-DFN	1	1.5 A	1.5 V	20 dB	90 dB	34.5 V	Over Current Over Temperature Reverse Polarity Short Circuit	12-WFDFN Exposed Pad	50 µA	Positive	125 °C	-40 °C	36 V	5 mA	4 mm		4 mm

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LT3081IDF#PBF | Datasheet

R531 Reliability Data