LP2981-N Series

100-mA, 16-V, low-dropout voltage regulator with high-accuracy & enable

Catalog

100-mA, 16-V, low-dropout voltage regulator with high-accuracy & enable

Part	Output Type	Supplier Device Package	Package / Case	Control Features	Voltage - Output (Min/Fixed)	Current - Quiescent (Iq)	Voltage Dropout (Max) [Max]	Output Configuration	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Input (Max) [Max]	Number of Regulators	Protection Features	Mounting Type	Current - Supply (Max) [Max]	Current - Output
Texas Instruments LP2981IM5X-3.6	1.81 mOhm	SOT-23-5	SC-74A SOT-753	Enable	3.6 V	95 µA	0.37 V	Positive	125 °C	-40 °C	16 V	1	Over Current Over Temperature Short Circuit	Surface Mount	1.7 mA	100 mA
Texas Instruments LP2981A-30DBVRE4	1.81 mOhm	SOT-23-5	SC-74A SOT-753	Enable		95 µA	0.37 V	Positive	125 °C	-40 °C	16 V	1	Over Current Over Temperature Short Circuit	Surface Mount	1.7 mA	100 mA
Texas Instruments LP2981A-30DBVTE4	1.81 mOhm	SOT-23-5	SC-74A SOT-753	Enable		95 µA	0.37 V	Positive	125 °C	-40 °C	16 V	1	Over Current Over Temperature Short Circuit	Surface Mount	1.7 mA	100 mA
Texas Instruments LP2981IM5X-3.3/NOPB	1.81 mOhm	SOT-23-5	SC-74A SOT-753	Enable	3.3 V	95 µA	0.37 V	Positive	125 °C	-40 °C	16 V	1	Over Current Over Temperature Short Circuit	Surface Mount	1.7 mA	100 mA
Texas Instruments LP2981A-28DBVR	1.81 mOhm	SOT-23-5	SC-74A SOT-753	Enable	2.8 V	95 µA	0.37 V	Positive	125 °C	-40 °C	16 V	1	Over Current Over Temperature Short Circuit	Surface Mount	1.7 mA	100 mA
Texas Instruments LP2981AIM5-3.0/NOPB	1.81 mOhm	SOT-23-5	SC-74A SOT-753	Enable		95 µA	0.37 V	Positive	125 °C	-40 °C	16 V	1	Over Current Over Temperature Short Circuit	Surface Mount	1.7 mA	100 mA
Texas Instruments LP2981A-33DBVT	1.81 mOhm	SOT-23-5	SC-74A SOT-753	Enable	3.3 V	95 µA	0.37 V	Positive	125 °C	-40 °C	16 V	1	Over Current Over Temperature Short Circuit	Surface Mount	1.7 mA	100 mA
Texas Instruments LP2981IM5-5.0/NOPB	1.81 mOhm	SOT-23-5	SC-74A SOT-753	Enable	5 V	95 µA	0.37 V	Positive	125 °C	-40 °C	16 V	1	Over Current Over Temperature Short Circuit	Surface Mount	1.7 mA	100 mA
Texas Instruments LP2981AIM5-3.0	1.81 mOhm	SOT-23-5	SC-74A SOT-753	Enable		95 µA	0.37 V	Positive	125 °C	-40 °C	16 V	1	Over Current Over Temperature Short Circuit	Surface Mount	1.7 mA	100 mA
Texas Instruments LP2981A-28DBVTG4	1.81 mOhm	SOT-23-5	SC-74A SOT-753	Enable	2.8 V	95 µA	0.37 V	Positive	125 °C	-40 °C	16 V	1	Over Current Over Temperature Short Circuit	Surface Mount	1.7 mA	100 mA

Catalog

100-mA, 16-V, low-dropout voltage regulator with high-accuracy & enable

Key Features

• Input voltage (VIN) range:Legacy chip: 2.2V to 16VNew chip: 2.5V to 16VOutput voltage (VOUT) range: 1.2V to 5.0VOutput voltage (VOUT) accuracy:±0.75% for A-grade legacy chip±1.25% for standard-grade legacy chip±0.5% for new chip (A-grade and standard grade)Output Voltage (VOUT) accuracy over load, and temperature: ±1% (new chip)Output current: Up to 100mALow IQ (new chip): 69µA at ILOAD = 0mALow IQ (new chip): 620µA at ILOAD = 100mAShutdown current over temperature:< 1µA (legacy chip)≤ 1.75µA (new chip)Output current limiting and thermal protectionStable with 2.2µF ceramic capacitors (new chip)High PSRR (new chip):75dB at 1kHz, 45dB at 1MHzOperating junction temperature: –40°C to +125°CPackage: 5-pin SOT-23 (DBV)Input voltage (VIN) range:Legacy chip: 2.2V to 16VNew chip: 2.5V to 16VOutput voltage (VOUT) range: 1.2V to 5.0VOutput voltage (VOUT) accuracy:±0.75% for A-grade legacy chip±1.25% for standard-grade legacy chip±0.5% for new chip (A-grade and standard grade)Output Voltage (VOUT) accuracy over load, and temperature: ±1% (new chip)Output current: Up to 100mALow IQ (new chip): 69µA at ILOAD = 0mALow IQ (new chip): 620µA at ILOAD = 100mAShutdown current over temperature:< 1µA (legacy chip)≤ 1.75µA (new chip)Output current limiting and thermal protectionStable with 2.2µF ceramic capacitors (new chip)High PSRR (new chip):75dB at 1kHz, 45dB at 1MHzOperating junction temperature: –40°C to +125°CPackage: 5-pin SOT-23 (DBV)

Description

The LP2981 and LP2981A (LP2981x) are fixed-output, low-dropout (LDO) voltage regulators supporting an input voltage range from 2.5V to 16V (for new chip only) and up to 100mA of load current. The LP2981x support an output range of 1.2V to 5.0V (new chip). Additionally, the LP2981x (new chip) has a ±1% output accuracy across load and temperature that can meet the needs of low-voltage microcontrollers (MCUs) and processors. In the new chip, wide bandwidth PSRR performance is 75dB at 1kHz and 45dB at 1MHz to help attenuate the switching frequency of an upstream DC/DC converter and minimize post regulator filtering. In the new chip, the internal soft-start mechanism reduces inrush current during start up, thus minimizing input capacitance. Standard protection features, such as overcurrent and overtemperature protection, are included. The LP2981 and LP2981A (LP2981x) are fixed-output, low-dropout (LDO) voltage regulators supporting an input voltage range from 2.5V to 16V (for new chip only) and up to 100mA of load current. The LP2981x support an output range of 1.2V to 5.0V (new chip). Additionally, the LP2981x (new chip) has a ±1% output accuracy across load and temperature that can meet the needs of low-voltage microcontrollers (MCUs) and processors. In the new chip, wide bandwidth PSRR performance is 75dB at 1kHz and 45dB at 1MHz to help attenuate the switching frequency of an upstream DC/DC converter and minimize post regulator filtering. In the new chip, the internal soft-start mechanism reduces inrush current during start up, thus minimizing input capacitance. Standard protection features, such as overcurrent and overtemperature protection, are included.