LT1175MPQ#TRPBF

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Analog Devices Inc./Maxim Integrated

500MA NEGATIVE LOW DROPOUT MICROPOWER REGULATOR

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LT1175MPQ#TRPBF

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Analog Devices Inc./Maxim Integrated

500MA NEGATIVE LOW DROPOUT MICROPOWER REGULATOR

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT1175 Series

The LT1175 is a negative micropower low dropout regulator. It features 45μA quiescent current, dropping to 10μA in shutdown. A new reference amplifier topology gives precision DC characteristics along with the ability to maintain good loop stability with an extremely wide range of output capacitors. Very low dropout voltage and high efficiency are obtained with a unique power transistor anti-saturation design. Adjustable and fixed 5V versions are available.Several new features make the LT1175 very user-friendly. TheSHDNpin can interface directly to either positive or negative logic levels. Current limit is user-selectable at 200mA, 400mA, 600mA and 800mA. The output can be forced to reverse voltage without damage or latch-up. Unlike some earlier designs, the increase in quiescent current during a dropout condition is actively limited.The LT1175 has complete blowout protection with current limiting, power limiting and thermal shutdown. Special attention was given to the problem of high temperature operation with micropower operating currents, preventing output voltage rise under no-load conditions. The LT1175 is available in 8-pin PDIP and SO packages, 3-lead SOT-223 as well as 5-pin surface mount DD and through-hole TO-220 packages. The 8-pin SO package is specially constructed for low thermal resistance.ApplicationsAnalog SystemsModemsInstrumentationA/D and D/A ConvertersInterface DriversBattery-Powered Systems

Technical Specifications

Parameters and characteristics for this part

Specification	LT1175MPQ#TRPBF

Control Features	Enable, Current Limit
Current - Output	500 mA
Current - Quiescent (Iq)	80 µA
Mounting Type	Surface Mount
Number of Regulators	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-55 °C
Output Configuration	Negative
Output Type	Adjustable
Package Leads	5 Leads
Package Name	D2PAK, DDPAK-5
Voltage - Input (Max)	-20 V
Voltage - Output (Max)	-19.3 V
Voltage - Output (Min/Fixed)	-3.8 V
Voltage Dropout (Max)	0.7 V

LT1175 Series

500mA Negative Low Dropout Micropower Regulator

Part	Package / Case	Package Name	Voltage - Input (Max)	Number of Regulators	Voltage Dropout (Max)	Output Configuration	Control Features	Voltage - Output (Min/Fixed)	Output Type	Current - Output	Current - Quiescent (Iq)	Mounting Type	PSRR (Minimum)	PSRR (Maximum)	Operating Temperature (Max)	Operating Temperature (Min)	Voltage - Output (Max)	Package Leads	Package Length	Package Width
Analog Devices Inc./Maxim Integrated LT1175CST-5#TRPBF	TO-261-4 TO-261AA	SOT-223-3	-20 V	1	0.7 V	Negative	Current Limit Enable	-5 V	Fixed	500 mA	80 µA	Surface Mount	15 dB	60 dB	125 °C	0 °C
Analog Devices Inc./Maxim Integrated LT1175IQ#TRPBF		D2PAK DDPAK-5	-20 V	1	0.7 V	Negative	Current Limit Enable	-3.8 V	Adjustable	500 mA	80 µA	Surface Mount			125 °C	-40 °C	-19.3 V	5 Leads
Analog Devices Inc./Maxim Integrated LT1175CT-5#PBF	TO-220-5	TO-220-5	-20 V	1	0.7 V	Negative	Current Limit Enable	-5 V	Fixed	500 mA	80 µA	Through Hole	15 dB	60 dB	125 °C	0 °C
Analog Devices Inc./Maxim Integrated LT1175IST-5	TO-261-4 TO-261AA	SOT-223-3	-20 V	1	0.7 V	Negative	Current Limit Enable	-5 V	Fixed	500 mA	80 µA	Surface Mount	15 dB	60 dB	125 °C	-40 °C
Analog Devices Inc./Maxim Integrated LT1175CQ#TRPBF		D2PAK DDPAK-5	-20 V	1	0.7 V	Negative	Current Limit Enable	-3.8 V	Adjustable	500 mA	80 µA	Surface Mount			125 °C	0 °C	-19.3 V	5 Leads
Analog Devices Inc./Maxim Integrated LT1175MPS8-5#PBF		8-SO 8-SOIC	-20 V	1	0.7 V	Negative	Current Limit Enable	-5 V	Fixed	500 mA	80 µA	Surface Mount	15 dB	60 dB	125 °C	-55 °C			0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated LT1175CT-5#06PBF	TO-220-5	TO-220-5 Flow 6	-20 V	1	0.7 V	Negative	Current Limit Enable	-5 V	Fixed	500 mA	80 µA	Through Hole	15 dB	60 dB	125 °C	0 °C
Analog Devices Inc./Maxim Integrated LT1175MPQ-5#TRPBF		D2PAK DDPAK-5	-20 V	1	0.7 V	Negative	Current Limit Enable	-5 V	Fixed	500 mA	80 µA	Surface Mount	15 dB	60 dB	125 °C	-55 °C		5 Leads
Analog Devices Inc./Maxim Integrated LT1175CN8-5#PBF		8-DIP 8-PDIP	-20 V	1	0.7 V	Negative	Current Limit Enable	-5 V	Fixed	500 mA	80 µA	Through Hole	15 dB	60 dB	125 °C	0 °C			0.3 in	7.62 mm
Analog Devices Inc./Maxim Integrated LT1175CN8#PBF		8-DIP 8-PDIP	-20 V	1	0.7 V	Negative	Current Limit Enable	-3.8 V	Adjustable	500 mA	80 µA	Through Hole			125 °C	0 °C	-19.3 V		0.3 in	7.62 mm

Pricing

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CAD

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Documents

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LT1175MPQ#TRPBF | Datasheet

R308 Reliability Data