LP3891ESX-1.5/NOPB
ActiveTexas Instruments
800-MA, ULTRA-LOW-DROPOUT VOLTAGE REGULATOR WITH ENABLE
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LP3891ESX-1.5/NOPB
ActiveTexas Instruments
800-MA, ULTRA-LOW-DROPOUT VOLTAGE REGULATOR WITH ENABLE
Deep-Dive with AI
Technical Specifications
Parameters and characteristics commom to parts in this series
| Specification | LP3891ESX-1.5/NOPB | LP3891 Series |
|---|---|---|
| Control Features | Enable | Enable |
| Current - Output | 800 mA | 800 mA |
| Current - Quiescent (Iq) | 30 µA | 30 µA |
| Current - Supply (Max) [Max] | 8 mA | 8 mA |
| Mounting Type | Surface Mount | Surface Mount, Through Hole |
| 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 | TO-263BA, D2PAK (5 Leads + Tab), TO-263-6 | TO-263BA, D2PAK (5 Leads + Tab), TO-263-6, 8-PowerSOIC, TO-220-5 Formed Leads |
| Package / Case | - | 3.9 mm |
| Package / Case | - | 0.154 in |
| Protection Features | Under Voltage Lockout (UVLO), Over Temperature, Over Current, Short Circuit | Under Voltage Lockout (UVLO), Over Temperature, Over Current, Short Circuit |
| PSRR [Max] | 80 dB | 80 dB |
| PSRR [Min] | 65 dB | 65 dB |
| Supplier Device Package | TO-263 (DDPAK-5) | TO-263 (DDPAK-5), 8-SO PowerPad, TO-220-5 |
| Voltage - Input (Max) [Max] | 5.5 V | 5.5 V |
| Voltage - Output (Min/Fixed) | 1.5 V | 1.2 - 1.8 V |
| Voltage Dropout (Max) [Max] | 0.4 V | 0.4 - 0.43 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
LP3891 Series
800-mA, ultra-low-dropout voltage regulator with enable
| Part | Voltage - Input (Max) [Max] | Control Features | Package / Case | Current - Output | Protection Features | Voltage - Output (Min/Fixed) | Mounting Type | Output Configuration | Current - Supply (Max) [Max] | Supplier Device Package | Voltage Dropout (Max) [Max] | Current - Quiescent (Iq) | Operating Temperature [Max] | Operating Temperature [Min] | Number of Regulators | PSRR [Max] | PSRR [Min] | Output Type | Package / Case [custom] | Package / Case [custom] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments LP3891ES-1.2/NOPBThe LP3891 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, DDPAK/TO-263 and SO PowerPAD-8 packages.
Dropout Voltage:100 mV (typ) at 0.8A load current.
Ground Pin Current:3 mA (typ) at full load.
Shutdown Current:60 nA (typ) when S/D pin is low.
Precision Output Voltage:1.5% room temperature accuracy.
The LP3891 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, DDPAK/TO-263 and SO PowerPAD-8 packages.
Dropout Voltage:100 mV (typ) at 0.8A load current.
Ground Pin Current:3 mA (typ) at full load.
Shutdown Current:60 nA (typ) when S/D pin is low.
Precision Output Voltage:1.5% room temperature accuracy. | 5.5 V | Enable | D2PAK (5 Leads + Tab), TO-263-6, TO-263BA | 800 mA | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) | 1.2 V | Surface Mount | Positive | 8 mA | TO-263 (DDPAK-5) | 0.4 V | 30 µA | 125 °C | -40 °C | 1 | 80 dB | 65 dB | 27.03 °C/W | ||
Texas Instruments LP3891EMR-1.2/NOPBThe LP3891 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, DDPAK/TO-263 and SO PowerPAD-8 packages.
Dropout Voltage:100 mV (typ) at 0.8A load current.
Ground Pin Current:3 mA (typ) at full load.
Shutdown Current:60 nA (typ) when S/D pin is low.
Precision Output Voltage:1.5% room temperature accuracy.
The LP3891 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, DDPAK/TO-263 and SO PowerPAD-8 packages.
Dropout Voltage:100 mV (typ) at 0.8A load current.
Ground Pin Current:3 mA (typ) at full load.
Shutdown Current:60 nA (typ) when S/D pin is low.
Precision Output Voltage:1.5% room temperature accuracy. | 5.5 V | Enable | 8-PowerSOIC | 800 mA | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) | 1.2 V | Surface Mount | Positive | 8 mA | 8-SO PowerPad | 0.43 V | 30 µA | 125 °C | -40 °C | 1 | 80 dB | 65 dB | 27.03 °C/W | 3.9 mm | 0.154 in |
Texas Instruments LP3891ES-1.2Linear Voltage Regulator IC Positive Fixed 1 Output 800mA TO-263 (DDPAK-5) | 5.5 V | Enable | D2PAK (5 Leads + Tab), TO-263-6, TO-263BA | 800 mA | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) | 1.2 V | Surface Mount | Positive | 8 mA | TO-263 (DDPAK-5) | 0.4 V | 30 µA | 125 °C | -40 °C | 1 | 80 dB | 65 dB | 27.03 °C/W | ||
Texas Instruments LP3891ET-1.8/NOPBLinear Voltage Regulator IC Positive Fixed 1 Output 800mA TO-220-5 | 5.5 V | Enable | TO-220-5 Formed Leads | 800 mA | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) | 1.8 V | Through Hole | Positive | 8 mA | TO-220-5 | 0.4 V | 30 µA | 125 °C | -40 °C | 1 | 80 dB | 65 dB | 27.03 °C/W | ||
Texas Instruments LP3891ET-1.2/NOPBLinear Voltage Regulator IC Positive Fixed 1 Output 800mA TO-220-5 | 5.5 V | Enable | TO-220-5 Formed Leads | 800 mA | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) | 1.2 V | Through Hole | Positive | 8 mA | TO-220-5 | 0.4 V | 30 µA | 125 °C | -40 °C | 1 | 80 dB | 65 dB | 27.03 °C/W | ||
Texas Instruments LP3891EMRX-1.2Linear Voltage Regulator IC Positive Fixed 1 Output 800mA 8-SO PowerPad | 5.5 V | Enable | 8-PowerSOIC | 800 mA | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) | 1.2 V | Surface Mount | Positive | 8 mA | 8-SO PowerPad | 0.43 V | 30 µA | 125 °C | -40 °C | 1 | 80 dB | 65 dB | 27.03 °C/W | 3.9 mm | 0.154 in |
Texas Instruments LP3891EMRX-1.2/NOPBThe LP3891 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, DDPAK/TO-263 and SO PowerPAD-8 packages.
Dropout Voltage:100 mV (typ) at 0.8A load current.
Ground Pin Current:3 mA (typ) at full load.
Shutdown Current:60 nA (typ) when S/D pin is low.
Precision Output Voltage:1.5% room temperature accuracy.
The LP3891 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, DDPAK/TO-263 and SO PowerPAD-8 packages.
Dropout Voltage:100 mV (typ) at 0.8A load current.
Ground Pin Current:3 mA (typ) at full load.
Shutdown Current:60 nA (typ) when S/D pin is low.
Precision Output Voltage:1.5% room temperature accuracy. | 5.5 V | Enable | 8-PowerSOIC | 800 mA | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) | 1.2 V | Surface Mount | Positive | 8 mA | 8-SO PowerPad | 0.43 V | 30 µA | 125 °C | -40 °C | 1 | 80 dB | 65 dB | 27.03 °C/W | 3.9 mm | 0.154 in |
Texas Instruments LP3891ES-1.5/NOPBThe LP3891 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, DDPAK/TO-263 and SO PowerPAD-8 packages.
Dropout Voltage:100 mV (typ) at 0.8A load current.
Ground Pin Current:3 mA (typ) at full load.
Shutdown Current:60 nA (typ) when S/D pin is low.
Precision Output Voltage:1.5% room temperature accuracy.
The LP3891 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, DDPAK/TO-263 and SO PowerPAD-8 packages.
Dropout Voltage:100 mV (typ) at 0.8A load current.
Ground Pin Current:3 mA (typ) at full load.
Shutdown Current:60 nA (typ) when S/D pin is low.
Precision Output Voltage:1.5% room temperature accuracy. | 5.5 V | Enable | D2PAK (5 Leads + Tab), TO-263-6, TO-263BA | 800 mA | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) | 1.5 V | Surface Mount | Positive | 8 mA | TO-263 (DDPAK-5) | 0.4 V | 30 µA | 125 °C | -40 °C | 1 | 80 dB | 65 dB | 27.03 °C/W | ||
Texas Instruments LP3891EMR-1.2Linear Voltage Regulator IC Positive Fixed 1 Output 800mA 8-SO PowerPad | 5.5 V | Enable | 8-PowerSOIC | 800 mA | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) | 1.2 V | Surface Mount | Positive | 8 mA | 8-SO PowerPad | 0.43 V | 30 µA | 125 °C | -40 °C | 1 | 80 dB | 65 dB | 27.03 °C/W | 3.9 mm | 0.154 in |
Texas Instruments LP3891EMR-1.5/NOPBLinear Voltage Regulator IC Positive Fixed 1 Output 800mA 8-SO PowerPad | 5.5 V | Enable | 8-PowerSOIC | 800 mA | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) | 1.5 V | Surface Mount | Positive | 8 mA | 8-SO PowerPad | 0.43 V | 30 µA | 125 °C | -40 °C | 1 | 80 dB | 65 dB | 27.03 °C/W | 3.9 mm | 0.154 in |
Texas Instruments LP3891EMR-1.8Linear Voltage Regulator IC Positive Fixed 1 Output 800mA 8-SO PowerPad | 5.5 V | Enable | 8-PowerSOIC | 800 mA | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) | 1.8 V | Surface Mount | Positive | 8 mA | 8-SO PowerPad | 0.43 V | 30 µA | 125 °C | -40 °C | 1 | 80 dB | 65 dB | 27.03 °C/W | 3.9 mm | 0.154 in |
Texas Instruments LP3891ESX-1.5/NOPBThe LP3891 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, DDPAK/TO-263 and SO PowerPAD-8 packages.
Dropout Voltage:100 mV (typ) at 0.8A load current.
Ground Pin Current:3 mA (typ) at full load.
Shutdown Current:60 nA (typ) when S/D pin is low.
Precision Output Voltage:1.5% room temperature accuracy.
The LP3891 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, DDPAK/TO-263 and SO PowerPAD-8 packages.
Dropout Voltage:100 mV (typ) at 0.8A load current.
Ground Pin Current:3 mA (typ) at full load.
Shutdown Current:60 nA (typ) when S/D pin is low.
Precision Output Voltage:1.5% room temperature accuracy. | 5.5 V | Enable | D2PAK (5 Leads + Tab), TO-263-6, TO-263BA | 800 mA | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) | 1.5 V | Surface Mount | Positive | 8 mA | TO-263 (DDPAK-5) | 0.4 V | 30 µA | 125 °C | -40 °C | 1 | 80 dB | 65 dB | 27.03 °C/W | ||
Texas Instruments LP3891ET-1.5/NOPBLinear Voltage Regulator IC Positive Fixed 1 Output 800mA TO-220-5 | 5.5 V | Enable | TO-220-5 Formed Leads | 800 mA | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) | 1.5 V | Through Hole | Positive | 8 mA | TO-220-5 | 0.4 V | 30 µA | 125 °C | -40 °C | 1 | 80 dB | 65 dB | 27.03 °C/W | ||
Texas Instruments LP3891ES-1.8/NOPBLinear Voltage Regulator IC Positive Fixed 1 Output 800mA TO-263 (DDPAK-5) | 5.5 V | Enable | D2PAK (5 Leads + Tab), TO-263-6, TO-263BA | 800 mA | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) | 1.8 V | Surface Mount | Positive | 8 mA | TO-263 (DDPAK-5) | 0.4 V | 30 µA | 125 °C | -40 °C | 1 | 80 dB | 65 dB | 27.03 °C/W |
Description
General part information
LP3891 Series
The LP3891 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, DDPAK/TO-263 and SO PowerPAD-8 packages.
Dropout Voltage:100 mV (typ) at 0.8A load current.
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Technical documentation and resources