LT3091MPFE#PBF

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Analog Devices

–36V, 1.5A NEGATIVE LINEAR REGULATOR WITH PROGRAMMABLE CURRENT LIMIT

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LT3091MPFE#PBF

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Analog Devices

–36V, 1.5A NEGATIVE LINEAR REGULATOR WITH PROGRAMMABLE CURRENT LIMIT

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DocumentsR531 Reliability Data Datasheet

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Technical Specifications

Parameters and characteristics for this part

Specification	LT3091MPFE#PBF

Control Features	Enable, Current Limit
Current - Output	1.5 A
Current - Quiescent (Iq)	50.5 µA
Mounting Type	Surface Mount
Number of Regulators	1
Operating Temperature [Max]	150 °C
Operating Temperature [Min]	-55 °C
Output Configuration	Negative
Output Type	Adjustable
Package / Case	Exposed Pad, 16-TSSOP
Package / Case [custom]	0.173 "
Package / Case [custom]	4.4 mm
Protection Features	Short Circuit, Reverse Polarity, Over Current, Over Temperature
PSRR	20 dB, 85 dB
Supplier Device Package	16-TSSOP-EP
Voltage - Input (Max) [Max]	-36 V
Voltage - Output (Max) [Max]	-32 V
Voltage - Output (Min/Fixed)	0 V
Voltage Dropout (Max) [Max]	0.45 V

LT3091 Series

–36V, 1.5A Negative Linear Regulator with Programmable Current Limit

Part	Package / Case	Output Configuration	Protection Features	Voltage - Output (Max) [Max]	Current - Output	Voltage - Input (Max) [Max]	Control Features	Supplier Device Package	Number of Regulators	Operating Temperature [Max]	Operating Temperature [Min]	PSRR	Voltage Dropout (Max) [Max]	Current - Quiescent (Iq)	Output Type	Mounting Type	Package / Case [custom]	Package / Case [custom]
Analog Devices LT3091EDE#PBF	14-WFDFN Exposed Pad	Negative	Over Current Over Temperature Reverse Polarity Short Circuit	-32 V	1.5 A	-36 V	Current Limit Enable	14-DFN (4x3)	1	125 °C	-40 °C	20 dB 85 dB	0.45 V	50.5 µA	Adjustable	Surface Mount
Analog Devices LT3091MPDE#TRPBF	14-WFDFN Exposed Pad	Negative	Over Current Over Temperature Reverse Polarity Short Circuit	-32 V	1.5 A	-36 V	Current Limit Enable	14-DFN (4x3)	1	150 °C	-55 °C	20 dB 85 dB	0.45 V	50.5 µA	Adjustable	Surface Mount
Analog Devices LT3091EDE#TRPBF	14-WFDFN Exposed Pad	Negative	Over Current Over Temperature Reverse Polarity Short Circuit	-32 V	1.5 A	-36 V	Current Limit Enable	14-DFN (4x3)	1	125 °C	-40 °C	20 dB 85 dB	0.45 V	50.5 µA	Adjustable	Surface Mount
Analog Devices LT3091ER#TRPBF	D2PAK (7 Leads + Tab) TO-263-8 TO-263CA	Negative	Over Current Over Temperature Reverse Polarity Short Circuit	-32 V	1.5 A	-36 V	Current Limit Enable	DDPAK-7	1	125 °C	-40 °C	20 dB 85 dB	0.525 V	50.5 µA	Adjustable	Surface Mount
Analog Devices LT3091HDE#PBF	14-WFDFN Exposed Pad	Negative	Over Current Over Temperature Reverse Polarity Short Circuit	-32 V	1.5 A	-36 V	Current Limit Enable	14-DFN (4x3)	1			20 dB 85 dB	0.45 V	50.5 µA	Adjustable	Surface Mount
Analog Devices LT3091MPDE#PBF	14-WFDFN Exposed Pad	Negative	Over Current Over Temperature Reverse Polarity Short Circuit	-32 V	1.5 A	-36 V	Current Limit Enable	14-DFN (4x3)	1	150 °C	-55 °C	20 dB 85 dB	0.45 V	50.5 µA	Adjustable	Surface Mount
Analog Devices LT3091MPFE#PBF	16-TSSOP Exposed Pad	Negative	Over Current Over Temperature Reverse Polarity Short Circuit	-32 V	1.5 A	-36 V	Current Limit Enable	16-TSSOP-EP	1	150 °C	-55 °C	20 dB 85 dB	0.45 V	50.5 µA	Adjustable	Surface Mount	0.173 "	4.4 mm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	95	$ 12.34

Description

General part information

LT3091 Series

The LT3091 is a 1.5A, low dropout negative linear regulator that is easily paralleled to increase output current or spread heat on surface mounted boards. Designed with a precision current reference followed by a high performance rail-to-rail voltage buffer, this regulator finds use in applications requiring precision output, high current with no heat sink, output adjustability to zero and low dropout voltage. The device can also be configured as a 3-terminal floating regulator.The LT3091 features fast transient response, high PSRR and output noise as low as 18μVRMS. The LT3091 generates a wide output voltage range (0V to –32V) while maintaining unity gain operation. This yields virtually constant bandwidth, load regulation, PSRR and noise, independent of the programmed output voltage.The LT3091 supplies 1.5A at a typical dropout voltage of 300mV. Operating quiescent current is nominally 1.2mA and drops to << 1μA in shutdown. A single resistor adjusts the LT3091’s precision programmable current limit. The device’s positive or negative current monitor either sources a current (0.25mA/A) or sinks a current (0.5mA/A) proportional to output current. Built-in protection includes reverse output protection, internal current limit with foldback and thermal shutdown with hysteresis.ApplicationsPost Regulator for Switching SuppliesLow Noise Instrumentation and RF SuppliesRugged Industrial SuppliesPrecision Power Supplies