LP3881ESX-1.2

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Texas Instruments

IC REG LINEAR 1.2V 800MA DDPAK

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LP3881ESX-1.2

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Texas Instruments

IC REG LINEAR 1.2V 800MA DDPAK

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Description Specifications Series Pricing CAD Documents

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.

Technical Specifications

Parameters and characteristics for this part

Specification	LP3881ESX-1.2

Control Features	Enable
Current - Output	800 mA
Current - Quiescent (Iq)	30 µA
Current - Supply (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	Fixed
Package Leads	5 Leads
Package Name	D2PAK, DDPAK/TO-263-5
Protection Features	Under Voltage Lockout (UVLO), Over Temperature, Over Current, Short Circuit
PSRR (Maximum)	80 dB
PSRR (Minimum)	65 dB
Voltage - Input (Max)	5.5 V
Voltage - Output (Min/Fixed)	1.2 V
Voltage Dropout (Max)	0.16 V

LP3881 Series

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

Part	Package Name	Number of Regulators	Current - Supply (Max)	Output Type	Operating Temperature (Max)	Operating Temperature (Min)	Current - Quiescent (Iq)	Protection Features	Current - Output	Voltage Dropout (Max)	Mounting Type	Control Features	PSRR (Maximum)	PSRR (Minimum)	Voltage - Output (Min/Fixed)	Voltage - Input (Max)	Output Configuration	Package Width	Package Length	Package / Case	Package Leads
Texas Instruments LP3881EMR-1.8/NOPB	8-PowerSOIC 8-SO PowerPad	1	8 mA	Fixed	125 °C	-40 °C	30 µA	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	800 mA	0.19 V	Surface Mount	Enable	80 dB	65 dB	1.8 V	5.5 V	Positive	3.9 mm	0.154 in
Texas Instruments LP3881ET-1.5/NOPB	TO-220-5	1	8 mA	Fixed	125 °C	-40 °C	30 µA	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	800 mA	0.16 V	Through Hole	Enable	80 dB	65 dB	1.5 V	5.5 V	Positive			TO-220-5 Formed Leads
Texas Instruments LP3881ET-1.8/NOPB	TO-220-5	1	8 mA	Fixed	125 °C	-40 °C	30 µA	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	800 mA	0.16 V	Through Hole	Enable	80 dB	65 dB	1.8 V	5.5 V	Positive			TO-220-5 Formed Leads
Texas Instruments LP3881ESX-1.2/NOPB	D2PAK TO-263 (DDPAK-5)	1	8 mA	Fixed	125 °C	-40 °C	30 µA	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	800 mA	0.16 V	Surface Mount	Enable	80 dB	65 dB	1.2 V	5.5 V	Positive				5 Leads
Texas Instruments LP3881ES-1.5	D2PAK TO-263 (DDPAK-5)	1	8 mA	Fixed	125 °C	-40 °C	30 µA	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	800 mA	0.16 V	Surface Mount	Enable	80 dB	65 dB	1.5 V	5.5 V	Positive				5 Leads
Texas Instruments LP3881ES-1.5/NOPB	D2PAK TO-263 (DDPAK-5)	1	8 mA	Fixed	125 °C	-40 °C	30 µA	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	800 mA	0.16 V	Surface Mount	Enable	80 dB	65 dB	1.5 V	5.5 V	Positive				5 Leads
Texas Instruments LP3881ESX-1.8/NOPB	D2PAK TO-263 (DDPAK-5)	1	8 mA	Fixed	125 °C	-40 °C	30 µA	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	800 mA	0.16 V	Surface Mount	Enable	80 dB	65 dB	1.8 V	5.5 V	Positive				5 Leads
Texas Instruments LP3881EMRX-1.2/NOPB	8-PowerSOIC 8-SO PowerPad	1	8 mA	Fixed	125 °C	-40 °C	30 µA	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	800 mA	0.19 V	Surface Mount	Enable	80 dB	65 dB	1.2 V	5.5 V	Positive	3.9 mm	0.154 in
Texas Instruments LP3881ESX-1.2/NOPB	D2PAK TO-263 (DDPAK-5)	1	8 mA	Fixed	125 °C	-40 °C	30 µA	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	800 mA	0.16 V	Surface Mount	Enable	80 dB	65 dB	1.2 V	5.5 V	Positive				5 Leads
Texas Instruments LP3881ESX-1.2	D2PAK TO-263 (DDPAK-5)	1	8 mA	Fixed	125 °C	-40 °C	30 µA	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	800 mA	0.16 V	Surface Mount	Enable	80 dB	65 dB	1.2 V	5.5 V	Positive				5 Leads

Pricing

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