100-mA, 16-V, low-dropout voltage regulator with enable | DBV | 5 | -40 to 125

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.