1 Features
• VIN range: 2.5 V to 16 V
• VOUT range (new chip):
– 1.2 V to 5.0 V (fixed, 100-mV steps)
• VOUT range (legacy chip): 2.5 V to 6.1 V
• VOUT accuracy:
– ±1% for A-grade legacy chip
– ±1.5% for standard-grade legacy chip
– ±0.5% for new chip only
• Output accuracy over load, and temperature:
– ±1% for new chip
• Output current: Up to 150 mA
• Low IQ (new chip): 71 μA at ILOAD = 0 mA
• Low IQ (new chip): 750 μA at ILOAD = 150 mA
• Shutdown current:
– 0.05 μA (typ) for legacy chip
– 1.12 μA (typ) for new chip
• Low noise: 30 μVRMS with 10-nF bypass capacitor
• Output current limiting and thermal protection
• Stable with 2.2-μF ceramic capacitors
• High PSRR: 70 dB at 1 kHz, 40 dB at 1 MHz
• Operating junction temperature: –40°C to +125°C
• Package: 5-pin SOT-23 (DBV) ultra-low dropout
voltage

2 Applications
• Washers and dryers
• Land mobile radios
• Active antenna system mMIMO
• Cordless power tools
• Motor drives and control boards

3 Description
The LP2985-N is a fixed-output, wide-input, low-noise,
low-dropout voltage regulator supporting an input
voltage range from 2.5 V to 16 V and up to 150 mA of
load current. The LP2985-N supports an output range
of 1.2 V to 5.0 V (new chip) and 2.5 V to 6.1 V (legacy
chip).
Additionally, the LP2985-N (new chip) has a 1%
output accuracy across load and temperature that
can meet the needs of low-voltage microcontrollers
(MCUs) and processors.
Low output noise of 30 μVRMS (with 10-nF bypass
capacitors) and wide bandwidth PSRR performance
of greater than 70 dB at 1 kHz and 40 dB at 1 MHz
help attenuate the switching frequency of an upstream
DC/DC converter and minimize post regulator filtering.
The internal soft-start time and current-limit protection
reduce inrush current during start up, thus minimizing
input capacitance. Standard protection features, such
as overcurrent and overtemperature protection, are
included.
The LP2985-N is available in a 5-pin, 2.9-mm × 1.6-
mm SOT-23 (DBV) package.