Integrated Circuits (ICs)

LP3881ES-1.8/NOPB

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800-MA, LOW-VIN (1.291-V), ULTRA-LOW-DROPOUT VOLTAGE REGULATOR WITH ENABLE

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Search across all available documentation for this part.

DocumentsPower Management Guide 2018 (Rev. R)LP3881 0.8A Fast-Response Ultra Low Dropout Linear Regulators datasheet (Rev. F)

Integrated Circuits (ICs)

LP3881ES-1.8/NOPB

Active

Texas Instruments

800-MA, LOW-VIN (1.291-V), ULTRA-LOW-DROPOUT VOLTAGE REGULATOR WITH ENABLE

Deep-Dive with AI

DocumentsPower Management Guide 2018 (Rev. R)LP3881 0.8A Fast-Response Ultra Low Dropout Linear Regulators datasheet (Rev. F)

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LP3881ES-1.8/NOPB

Control Features	Enable
Current - Output	800 mA
Current - Quiescent (Iq)	30 µA
Current - Supply (Max) [Max]	8 mA
Mounting Type	Surface Mount
Number of Regulators	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	1.81 mOhm
Package / Case	TO-263-6, TO-263BA, D2PAK (5 Leads + Tab)
Protection Features	Short Circuit, Over Temperature, Under Voltage Lockout (UVLO), Over Current
PSRR [Max]	80 dB
PSRR [Min]	65 dB
Supplier Device Package	TO-263 (DDPAK-5)
Voltage - Input (Max) [Max]	5.5 V
Voltage - Output (Min/Fixed)	1.8 V

LP3881 Series

800-mA, low-VIN (1.291-V), ultra-low-dropout voltage regulator with enable

Part	Control Features	Protection Features	Package / Case [y]	Package / Case [x]	Package / Case	PSRR [Min]	PSRR [Max]	Mounting Type	Number of Regulators	Current - Quiescent (Iq)	Supplier Device Package	Current - Output	Voltage Dropout (Max) [Max]	Voltage - Input (Max) [Max]	Output Configuration	Output Type	Current - Supply (Max) [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Output (Min/Fixed)
Texas Instruments LP3881EMR-1.8/NOPB	Enable	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3.9 mm	0.154 in	8-PowerSOIC	65 dB	80 dB	Surface Mount	1	30 µA	8-SO PowerPad	800 mA	0.19 V	5.5 V	Positive	1.81 mOhm	8 mA	125 °C	-40 °C	1.8 V
Texas Instruments LP3881ET-1.5/NOPB	Enable	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)			TO-220-5 Formed Leads	65 dB	80 dB	Through Hole	1	30 µA	TO-220-5	800 mA		5.5 V	Positive	1.81 mOhm	8 mA	125 °C	-40 °C	1.5 V
Texas Instruments LP3881ET-1.8/NOPB	Enable	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)			TO-220-5 Formed Leads	65 dB	80 dB	Through Hole	1	30 µA	TO-220-5	800 mA		5.5 V	Positive	1.81 mOhm	8 mA	125 °C	-40 °C	1.8 V
Texas Instruments LP3881ES-1.5	Enable	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)			D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	65 dB	80 dB	Surface Mount	1	30 µA	TO-263 (DDPAK-5)	800 mA		5.5 V	Positive	1.81 mOhm	8 mA	125 °C	-40 °C	1.5 V
Texas Instruments LP3881ES-1.5/NOPB	Enable	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)			D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	65 dB	80 dB	Surface Mount	1	30 µA	TO-263 (DDPAK-5)	800 mA		5.5 V	Positive	1.81 mOhm	8 mA	125 °C	-40 °C	1.5 V
Texas Instruments LP3881ESX-1.8/NOPB	Enable	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)			D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	65 dB	80 dB	Surface Mount	1	30 µA	TO-263 (DDPAK-5)	800 mA		5.5 V	Positive	1.81 mOhm	8 mA	125 °C	-40 °C	1.8 V
Texas Instruments LP3881EMRX-1.2/NOPB	Enable	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3.9 mm	0.154 in	8-PowerSOIC	65 dB	80 dB	Surface Mount	1	30 µA	8-SO PowerPad	800 mA	0.19 V	5.5 V	Positive	1.81 mOhm	8 mA	125 °C	-40 °C	1.2 V
Texas Instruments LP3881ESX-1.2/NOPB	Enable	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)			D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	65 dB	80 dB	Surface Mount	1	30 µA	TO-263 (DDPAK-5)	800 mA		5.5 V	Positive	1.81 mOhm	8 mA	125 °C	-40 °C	1.2 V
Texas Instruments LP3881ESX-1.2	Enable	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)			D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	65 dB	80 dB	Surface Mount	1	30 µA	TO-263 (DDPAK-5)	800 mA		5.5 V	Positive	1.81 mOhm	8 mA	125 °C	-40 °C	1.2 V
Texas Instruments LP3881ES-1.8/NOPB	Enable	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)			D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	65 dB	80 dB	Surface Mount	1	30 µA	TO-263 (DDPAK-5)	800 mA		5.5 V	Positive	1.81 mOhm	8 mA	125 °C	-40 °C	1.8 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	225	$ 4.63
Texas Instruments	TUBE	1	$ 4.74
		100	$ 3.86
		250	$ 3.04
		1000	$ 2.57

Description

General part information

LP3881 Series

The LP3881 is a high current, fast response regulator which can maintain output voltage regulation with minimum input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: Vbias provides voltage to drive the gate of the N-MOS power transistor, while Vin is the input voltage which supplies power to the load. The use of an external bias rail allows the part to operate from ultra low Vin voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an N-MOS power transistor results in wide bandwidth, yet minimum external capacitance is required to maintain loop stability.

The fast transient response of these devices makes them suitable for use in powering DSP, Microcontroller Core voltages and Switch Mode Power Supply post regulators. The parts are available in TO-220, TO-263 and SOIC-8 packages.

Dropout Voltage:75 mV (typ) @ 0.8A load current.

Documents

Technical documentation and resources

Power Management Guide 2018 (Rev. R)

Selection guide

LP3881 0.8A Fast-Response Ultra Low Dropout Linear Regulators datasheet (Rev. F)

Data sheet