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LP3981ILDX-2.8/NOPB
Integrated Circuits (ICs)

LP3981ILDX-2.8/NOPB

Active
Texas Instruments

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

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Search across all available documentation for this part.

DocumentsLP3981 Micropower, 300-mA Ultra-Low-Dropout CMOS Voltage Regulator datasheet (Rev. H)
LP3981ILDX-2.8/NOPB
Integrated Circuits (ICs)

LP3981ILDX-2.8/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)

Technical Specifications

Parameters and characteristics for this part

SpecificationLP3981ILDX-2.8/NOPB
Control FeaturesEnable
Current - Output300 mA
Current - Quiescent (Iq)120 µA
Current - Supply (Max) [Max]210 µA
Mounting TypeSurface Mount
Number of Regulators1
Operating Temperature [Max]125 °C
Operating Temperature [Min]-40 °C
Output ConfigurationPositive
Output Type1.81 mOhm
Protection FeaturesOver Temperature, Over Current, Short Circuit
PSRR [Max]55 dB
PSRR [Min]50 dB
Supplier Device Package6-WSON (3x4)
Voltage - Input (Max) [Max]6 V
Voltage - Output (Min/Fixed)2.8 V
Voltage Dropout (Max) [Max]0.2 V

LP3981 Series

300-mA, high-accuracy, low-dropout voltage regulator with enable

PartOutput TypePackage / CasePackage / Case [custom]Package / CaseMounting TypePSRR [Max]PSRR [Min]Current - OutputCurrent - Supply (Max) [Max]Control FeaturesVoltage - Input (Max) [Max]Voltage Dropout (Max) [Max]Number of RegulatorsProtection FeaturesOperating Temperature [Max]Operating Temperature [Min]Output ConfigurationVoltage - Output (Min/Fixed)Current - Quiescent (Iq)Supplier Device Package
8-VSSOP
Texas Instruments
LP3981IMM-2.7/NOPB
1.81 mOhm
8-MSOP
8-TSSOP
0.118 in
3 mm
Surface Mount
55 dB
50 dB
300 mA
210 µA
Enable
6 V
0.2 V
1
Over Current
Over Temperature
Short Circuit
125 °C
-40 °C
Positive
2.7 V
120 µA
6-WSON
Texas Instruments
LP3981ILD-2.5/NOPB
1.81 mOhm
Surface Mount
55 dB
50 dB
300 mA
210 µA
Enable
6 V
0.2 V
1
Over Current
Over Temperature
Short Circuit
125 °C
-40 °C
Positive
2.5 V
120 µA
6-WSON (3x4)
8-VSSOP
Texas Instruments
LP3981IMM-3.03/NOPB
1.81 mOhm
8-MSOP
8-TSSOP
0.118 in
3 mm
Surface Mount
55 dB
50 dB
300 mA
210 µA
Enable
6 V
0.2 V
1
Over Current
Over Temperature
Short Circuit
125 °C
-40 °C
Positive
3.03 V
120 µA
8-VSSOP
Texas Instruments
LP3981IMMX-3.3/NOPB
1.81 mOhm
8-MSOP
8-TSSOP
0.118 in
3 mm
Surface Mount
55 dB
50 dB
300 mA
210 µA
Enable
6 V
0.2 V
1
Over Current
Over Temperature
Short Circuit
125 °C
-40 °C
Positive
3.3 V
120 µA
8-VSSOP
Texas Instruments
LP3981IMM-3.03
1.81 mOhm
8-MSOP
8-TSSOP
0.118 in
3 mm
Surface Mount
55 dB
50 dB
300 mA
210 µA
Enable
6 V
0.2 V
1
Over Current
Over Temperature
Short Circuit
125 °C
-40 °C
Positive
3.03 V
120 µA
6-WSON
Texas Instruments
LP3981ILDX-2.7
1.81 mOhm
Surface Mount
55 dB
50 dB
300 mA
210 µA
Enable
6 V
0.2 V
1
Over Current
Over Temperature
Short Circuit
125 °C
-40 °C
Positive
2.7 V
120 µA
6-WSON (3x4)
8-VSSOP
Texas Instruments
LP3981IMM-2.8/NOPB
1.81 mOhm
8-MSOP
8-TSSOP
0.118 in
3 mm
Surface Mount
55 dB
50 dB
300 mA
210 µA
Enable
6 V
0.2 V
1
Over Current
Over Temperature
Short Circuit
125 °C
-40 °C
Positive
2.8 V
120 µA
LP3981ILDX-2.8/NOPB
Texas Instruments
LP3981ILDX-2.8/NOPB
1.81 mOhm
Surface Mount
55 dB
50 dB
300 mA
210 µA
Enable
6 V
0.2 V
1
Over Current
Over Temperature
Short Circuit
125 °C
-40 °C
Positive
2.8 V
120 µA
6-WSON (3x4)
8-VSSOP
Texas Instruments
LP3981IMM-3.3/NOPB
1.81 mOhm
8-MSOP
8-TSSOP
0.118 in
3 mm
Surface Mount
55 dB
50 dB
300 mA
210 µA
Enable
6 V
0.2 V
1
Over Current
Over Temperature
Short Circuit
125 °C
-40 °C
Positive
3.3 V
120 µA
8-VSSOP
Texas Instruments
LP3981IMMX-3.3
1.81 mOhm
8-MSOP
8-TSSOP
0.118 in
3 mm
Surface Mount
55 dB
50 dB
300 mA
210 µA
Enable
6 V
0.2 V
1
Over Current
Over Temperature
Short Circuit
125 °C
-40 °C
Positive
3.3 V
120 µA

Pricing

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

DistributorPackageQuantity$
DigikeyCut Tape (CT) 1$ 0.81
Digi-Reel® 1$ 0.81
Tape & Reel (TR) 4500$ 0.31
9000$ 0.29
13500$ 0.28
31500$ 0.27
Texas InstrumentsLARGE T&R 1$ 0.53
100$ 0.41
250$ 0.30
1000$ 0.21

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.