LP3981ILD-3.0/NOPB

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Texas Instruments

300-MA, HIGH-ACCURACY, LOW-DROPOUT VOLTAGE REGULATOR WITH ENABLE

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DocumentsLP3981 Micropower, 300-mA Ultra-Low-Dropout CMOS Voltage Regulator datasheet (Rev. H)

LP3981ILD-3.0/NOPB

Active

Texas Instruments

300-MA, HIGH-ACCURACY, LOW-DROPOUT VOLTAGE REGULATOR WITH ENABLE

Deep-Dive with AI

DocumentsLP3981 Micropower, 300-mA Ultra-Low-Dropout CMOS Voltage Regulator datasheet (Rev. H)

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics commom to parts in this series

Specification	LP3981ILD-3.0/NOPB	LP3981 Series

Control Features	Enable	Enable
Current - Output	300 mA	300 mA
Current - Quiescent (Iq)	120 µA	120 µA
Current - Supply (Max) [Max]	210 µA	210 µA
Mounting Type	Surface Mount	Surface Mount
Number of Regulators	1	1
Operating Temperature [Max]	125 °C	125 °C
Operating Temperature [Min]	-40 °C	-40 °C
Output Configuration	Positive	Positive
Output Type	27.03 °C/W	27.03 °C/W
Package / Case	-	8-TSSOP, 8-MSOP
Package / Case	-	0.118 in
Package / Case	-	3 mm
Protection Features	Over Current, Short Circuit, Over Temperature	Over Current, Short Circuit, Over Temperature
PSRR [Max]	55 dB	55 dB
PSRR [Min]	50 dB	50 dB
Supplier Device Package	6-WSON	6-WSON
Voltage - Input (Max) [Max]	6 V	6 V
Voltage - Output (Min/Fixed)	-	2.5 - 3.3 V
Voltage Dropout (Max) [Max]	0.2 V	0.2 V

Pricing

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

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 0.81
		10	$ 0.71
		25	$ 0.67
		100	$ 0.54
		250	$ 0.51
		500	$ 0.43
	Digi-Reel®	1	$ 0.81
		10	$ 0.71
		25	$ 0.67
		100	$ 0.54
		250	$ 0.51
		500	$ 0.43
	Tape & Reel (TR)	1000	$ 0.34
		2000	$ 0.31
		5000	$ 0.29
		10000	$ 0.28
		25000	$ 0.27
Texas Instruments	SMALL T&R	1	$ 0.53
		100	$ 0.41
		250	$ 0.30
		1000	$ 0.21

LP3981 Series

IC REG LINEAR 3V 300MA 8VSSOP

Part	Operating Temperature [Max]	Operating Temperature [Min]	Voltage Dropout (Max) [Max]	PSRR [Min]	PSRR [Max]	Current - Quiescent (Iq)	Protection Features	Current - Supply (Max) [Max]	Voltage - Input (Max) [Max]	Current - Output	Output Type	Number of Regulators	Mounting Type	Control Features	Package / Case	Package / Case	Package / Case	Output Configuration	Voltage - Output (Min/Fixed)	Supplier Device Package
Texas Instruments LP3981IMM-3.0/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable	8-MSOP, 8-TSSOP	0.118 in	3 mm	Positive
Texas Instruments LP3981ILDX-2.5/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive	2.5 V	6-WSON
Texas Instruments LP3981ILD-2.5	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive	2.5 V	6-WSON
Texas Instruments LP3981IMM-2.8/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable	8-MSOP, 8-TSSOP	0.118 in	3 mm	Positive	2.8 V
Texas Instruments LP3981IMMX-3.3/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable	8-MSOP, 8-TSSOP	0.118 in	3 mm	Positive	3.3 V
Texas Instruments LP3981IMMX-2.5/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable	8-MSOP, 8-TSSOP	0.118 in	3 mm	Positive	2.5 V
Texas Instruments LP3981ILDX-2.8/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive	2.8 V	6-WSON
Texas Instruments LP3981ILD-2.5/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive	2.5 V	6-WSON
Texas Instruments LP3981ILDX-2.7/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive	2.7 V	6-WSON
Texas Instruments LP3981ILDX-2.8	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive	2.8 V	6-WSON
Texas Instruments LP3981ILD-3.03/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive	3.03 V	6-WSON
Texas Instruments LP3981IMM-2.7	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable	8-MSOP, 8-TSSOP	0.118 in	3 mm	Positive	2.7 V
Texas Instruments LP3981IMM-2.5/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable	8-MSOP, 8-TSSOP	0.118 in	3 mm	Positive	2.5 V
Texas Instruments LP3981IMM-3.03	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable	8-MSOP, 8-TSSOP	0.118 in	3 mm	Positive	3.03 V
Texas Instruments LP3981ILD-3.3	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive	3.3 V	6-WSON
Texas Instruments LP3981IMM-3.0	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable	8-MSOP, 8-TSSOP	0.118 in	3 mm	Positive
Texas Instruments LP3981ILDX-2.7	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive	2.7 V	6-WSON
Texas Instruments LP3981ILDX-3.03/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive	3.03 V	6-WSON
Texas Instruments LP3981ILD-2.83/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive	2.83 V	6-WSON
Texas Instruments LP3981IMM-3.3/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable	8-MSOP, 8-TSSOP	0.118 in	3 mm	Positive	3.3 V
Texas Instruments LP3981IMM-3.3	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable	8-MSOP, 8-TSSOP	0.118 in	3 mm	Positive	3.3 V
Texas Instruments LP3981IMM-2.7/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable	8-MSOP, 8-TSSOP	0.118 in	3 mm	Positive	2.7 V
Texas Instruments LP3981IMM-2.5	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable	8-MSOP, 8-TSSOP	0.118 in	3 mm	Positive	2.5 V
Texas Instruments LP3981ILD-3.3/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive	3.3 V	6-WSON
Texas Instruments LP3981ILD-3.0/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive		6-WSON
Texas Instruments LP3981IMMX-3.3	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable	8-MSOP, 8-TSSOP	0.118 in	3 mm	Positive	3.3 V
Texas Instruments LP3981ILD-3.0	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive		6-WSON
Texas Instruments LP3981ILDX-3.3/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive	3.3 V	6-WSON
Texas Instruments LP3981ILDX-2.83/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive	2.83 V	6-WSON
Texas Instruments LP3981ILD-2.7/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive	2.7 V	6-WSON
Texas Instruments LP3981ILD-2.8/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable				Positive	2.8 V	6-WSON
Texas Instruments LP3981IMM-3.03/NOPB	125 °C	-40 °C	0.2 V	50 dB	55 dB	120 µA	Over Current, Over Temperature, Short Circuit	210 µA	6 V	300 mA	27.03 °C/W	1	Surface Mount	Enable	8-MSOP, 8-TSSOP	0.118 in	3 mm	Positive	3.03 V

Description

General part information

LP3981 Series

Performance of the LP3981 device is optimized for battery-powered systems to deliver ultra-low-noise, extremely low dropout voltage, and low quiescent current. Regulator ground current increases only slightly in dropout, further prolonging the battery life.

Power supply rejection is better than 60 dB at low frequencies. This high power supply rejection is maintained down to lower input voltage levels common to battery-operated circuits.

The device is ideal for mobile phone and similar battery-powered wireless applications. It provides up to 300 mA, from a 2.5-V to 6-V input, consuming less than 1 µA in disable mode.

Documents

Technical documentation and resources

LP3981 Micropower, 300-mA Ultra-Low-Dropout CMOS Voltage Regulator datasheet (Rev. H)

Data sheet