Integrated Circuits (ICs)

LT1121HVIS8#PBF

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58DB@(120HZ) 150MA ADJUSTABLE 3.75V~30V POSITIVE ELECTRODE 30V SO-8 VOLTAGE REGULATORS - LINEAR, LOW DROP OUT (LDO) REGULATORS ROHS

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Integrated Circuits (ICs)

LT1121HVIS8#PBF

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Analog Devices

58DB@(120HZ) 150MA ADJUSTABLE 3.75V~30V POSITIVE ELECTRODE 30V SO-8 VOLTAGE REGULATORS - LINEAR, LOW DROP OUT (LDO) REGULATORS ROHS

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DocumentsDatasheet R086 Reliability Data

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LT1121HVIS8#PBF

Control Features	Enable
Current - Output	150 mA
Current - Quiescent (Iq)	50 çA
Current - Supply (Max) [Max]	14 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	8-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Protection Features	Reverse Polarity, Over Temperature
PSRR	58 dB
Supplier Device Package	8-SO
Voltage - Input (Max) [Max]	30 V
Voltage - Output (Max) [Max]	30 V
Voltage Dropout (Max) [Max]	0.7 V

LT1121 Series

Micropower Low Dropout Regulators with Shutdown

Part	PSRR	Current - Supply (Max) [Max]	Package / Case	Package / Case [y]	Package / Case [x]	Mounting Type	Voltage - Input (Max) [Max]	Voltage Dropout (Max) [Max]	Current - Output	Voltage - Output (Min/Fixed)	Protection Features	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Current - Quiescent (Iq)	Output Type	Control Features	Number of Regulators	Output Configuration	Output Type	Voltage - Output (Max) [Max]	Package / Case	Package / Case
Analog Devices LT1121AIS8-5#TRPBF	58 dB	14 mA	8-SOIC	3.9 mm	0.154 in	Surface Mount	30 V	0.7 V	150 mA	5 V	Over Temperature Reverse Polarity	8-SO	125 °C	-40 °C	50 çA	1.81 mOhm	Enable	1	Positive
Analog Devices LT1121CST-3.3#PBF	58 dB	14 mA	TO-261-4 TO-261AA			Surface Mount	30 V	0.7 V	150 mA	3.3 V	Over Temperature Reverse Polarity	SOT-223-3	125 °C	0 °C	50 çA	1.81 mOhm	Enable	1	Positive
Analog Devices LT1121IZ-3.3#TRPBF	58 dB	14 mA	TO-226-3 TO-92-3			Through Hole	30 V	0.7 V	150 mA	3.3 V	Over Temperature Reverse Polarity	TO-92-3	125 °C	-40 °C	50 çA	1.81 mOhm	Enable	1	Positive
Analog Devices LT1121IZ-3.3#PBF	58 dB	14 mA	TO-226-3 TO-92-3			Through Hole	30 V	0.7 V	150 mA	3.3 V	Over Temperature Reverse Polarity	TO-92-3	125 °C	-40 °C	50 çA	1.81 mOhm	Enable	1	Positive
Analog Devices LT1121HVIS8#PBF	58 dB	14 mA	8-SOIC	3.9 mm	0.154 in	Surface Mount	30 V	0.7 V	150 mA		Over Temperature Reverse Polarity	8-SO	125 °C	-40 °C	50 çA		Enable	1	Positive	Adjustable	30 V
Analog Devices LT1121IN8-5#PBF	58 dB	14 mA	8-DIP			Through Hole	30 V	0.7 V	150 mA	5 V	Over Temperature Reverse Polarity	8-PDIP	125 °C	-40 °C	50 çA	1.81 mOhm	Enable	1	Positive			0.3 in	7.62 mm
Analog Devices LT1121IS8-3.3#TRPBF	58 dB	14 mA	8-SOIC	3.9 mm	0.154 in	Surface Mount	30 V	0.7 V	150 mA	3.3 V	Over Temperature Reverse Polarity	8-SO	125 °C	-40 °C	50 çA	1.81 mOhm	Enable	1	Positive
Analog Devices LT1121IS8#PBF	58 dB	14 mA	8-SOIC	3.9 mm	0.154 in	Surface Mount	30 V	0.7 V	150 mA		Over Temperature Reverse Polarity	8-SO	125 °C	-40 °C	50 çA		Enable	1	Positive	Adjustable	30 V
Analog Devices LT1121IN8-3.3#PBF	58 dB	14 mA	8-DIP			Through Hole	30 V	0.7 V	150 mA	3.3 V	Over Temperature Reverse Polarity	8-PDIP	125 °C	-40 °C	50 çA	1.81 mOhm	Enable	1	Positive			0.3 in	7.62 mm
Analog Devices LT1121HVIS8#TRPBF	58 dB	14 mA	8-SOIC	3.9 mm	0.154 in	Surface Mount	30 V	0.7 V	150 mA		Over Temperature Reverse Polarity	8-SO	125 °C	-40 °C	50 çA		Enable	1	Positive	Adjustable	30 V

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 10.24
		10	$ 7.13
		25	$ 6.33
		100	$ 5.43
		250	$ 4.99
		500	$ 4.73
		1000	$ 4.51
LCSC	Piece	1	$ 4.54
		200	$ 1.76
		500	$ 1.70
		1000	$ 1.67

Description

General part information

LT1121 Series

The LT1121/LT1121-3.3/LT1121-5 are micropower low dropout regulators with shutdown. These devices are capable of supplying 150mA of output current with a dropout voltage of 0.4V. Designed for use in battery-powered systems, the low quiescent current, 30µA operating and 16µA in shutdown, makes them an ideal choice. The quiescent current is well-controlled; it does not rise in dropout as it does with many other low dropout PNP regulators.Other features of the LT1121/LT1121-3.3/LT1121-5 include the ability to operate with very small output capacitors. They are stable with only 0.33µF on the output while most older devices require between 1µF and 100µF for stability. Small ceramic capacitors can be used, enhancing manufacturability. Also the input may be connected to ground or a reverse voltage without reverse current flow from output to input. This makes the LT1121 series ideal for backup power situations where the output is held high and the input is at ground or reversed. Under these conditions only 16µA will flow from the output pin to ground.ApplicationsLow Current RegulatorRegulator for Battery-Powered SystemsPost Regulator for Switching Supplies