LP3981ILDX-2.5/NOPB

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Texas Instruments

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

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LP3981ILDX-2.5/NOPB

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Texas Instruments

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

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Description Specifications Series Pricing CAD Documents

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.

Technical Specifications

Parameters and characteristics for this part

Specification	LP3981ILDX-2.5/NOPB

Control Features	Enable
Current - Output	300 mA
Current - Quiescent (Iq)	120 µA
Current - Supply (Max)	210 µA
Mounting Type	Surface Mount
Number of Regulators	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Fixed
Package / Case	6-WDFN Exposed Pad
Package Length	3 mm
Package Name	6-WSON
Package Width	4 mm
Protection Features	Over Current, Short Circuit, Over Temperature
PSRR (Maximum)	50 dB
PSRR (Minimum)	55 dB
Voltage - Input (Max)	6 V
Voltage - Output (Min/Fixed)	2.5 V
Voltage Dropout (Max)	0.2 V

LP3981 Series

Part	Operating Temperature (Max)	Operating Temperature (Min)	PSRR (Maximum)	PSRR (Minimum)	Output Configuration	Package Width	Package Name	Package Length	Mounting Type	Protection Features	Current - Supply (Max)	Number of Regulators	Current - Output	Current - Quiescent (Iq)	Voltage - Input (Max)	Voltage - Output (Min/Fixed)	Voltage Dropout (Max)	Output Type	Control Features	Package / Case
Texas Instruments LP3981IMM-2.7/NOPB	125 °C	-40 °C	50 dB	55 dB	Positive	3 mm	8-TSSOP 8-MSOP 8-VSSOP	0.118 in	Surface Mount	Over Current Over Temperature Short Circuit	210 µA	1	300 mA	120 µA	6 V	2.7 V	0.2 V	Fixed	Enable
Texas Instruments LP3981ILD-2.5/NOPB	125 °C	-40 °C	50 dB	55 dB	Positive	4 mm	6-WSON	3 mm	Surface Mount	Over Current Over Temperature Short Circuit	210 µA	1	300 mA	120 µA	6 V	2.5 V	0.2 V	Fixed	Enable	6-WDFN Exposed Pad
Texas Instruments LP3981IMM-3.03/NOPB	125 °C	-40 °C	50 dB	55 dB	Positive	3 mm	8-TSSOP 8-MSOP 8-VSSOP	0.118 in	Surface Mount	Over Current Over Temperature Short Circuit	210 µA	1	300 mA	120 µA	6 V	3.03 V	0.2 V	Fixed	Enable
Texas Instruments LP3981IMMX-3.3/NOPB	125 °C	-40 °C	50 dB	55 dB	Positive	3 mm	8-TSSOP 8-MSOP 8-VSSOP	0.118 in	Surface Mount	Over Current Over Temperature Short Circuit	210 µA	1	300 mA	120 µA	6 V	3.3 V	0.2 V	Fixed	Enable
Texas Instruments LP3981IMM-3.03	125 °C	-40 °C	50 dB	55 dB	Positive	3 mm	8-TSSOP 8-MSOP 8-VSSOP	0.118 in	Surface Mount	Over Current Over Temperature Short Circuit	210 µA	1	300 mA	120 µA	6 V	3.03 V	0.2 V	Fixed	Enable
Texas Instruments LP3981ILDX-2.7	125 °C	-40 °C	50 dB	55 dB	Positive	4 mm	6-WSON	3 mm	Surface Mount	Over Current Over Temperature Short Circuit	210 µA	1	300 mA	120 µA	6 V	2.7 V	0.2 V	Fixed	Enable	6-WDFN Exposed Pad
Texas Instruments LP3981IMM-2.8/NOPB	125 °C	-40 °C	50 dB	55 dB	Positive	3 mm	8-TSSOP 8-MSOP 8-VSSOP	0.118 in	Surface Mount	Over Current Over Temperature Short Circuit	210 µA	1	300 mA	120 µA	6 V	2.8 V	0.2 V	Fixed	Enable
Texas Instruments LP3981ILDX-2.8/NOPB	125 °C	-40 °C	50 dB	55 dB	Positive	4 mm	6-WSON	3 mm	Surface Mount	Over Current Over Temperature Short Circuit	210 µA	1	300 mA	120 µA	6 V	2.8 V	0.2 V	Fixed	Enable	6-WDFN Exposed Pad
Texas Instruments LP3981IMM-3.3/NOPB	125 °C	-40 °C	50 dB	55 dB	Positive	3 mm	8-TSSOP 8-MSOP 8-VSSOP	0.118 in	Surface Mount	Over Current Over Temperature Short Circuit	210 µA	1	300 mA	120 µA	6 V	3.3 V	0.2 V	Fixed	Enable
Texas Instruments LP3981IMMX-3.3	125 °C	-40 °C	50 dB	55 dB	Positive	3 mm	8-TSSOP 8-MSOP 8-VSSOP	0.118 in	Surface Mount	Over Current Over Temperature Short Circuit	210 µA	1	300 mA	120 µA	6 V	3.3 V	0.2 V	Fixed	Enable

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

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