1 Features
• VIN range:
– Legacy chip: 2.2 V to 16 V
– New chip: 2.5 V to 16V
• VOUT range:
– Legacy chip: 1.23 V to 15.0 V
– New chip: 1.2 V to 15.0 V
• VOUT(typ) accuracy:
– Legacy chip: ±1%
– New chip: ±0.5%
• Output accuracy over load and temperature:
– Legacy chip: ±3.5%
– New chip: ±1%
• Output current: Up to 50 mA
• Quiescent current, low IQ (new chip):
– 55 μA at ILOAD = 0 mA
– 350 μA at ILOAD = 50 mA
• Shutdown current over temperature:
– Legacy chip: < 1 μA
– New chip: ≤ 0.8 μA
• Output current limiting and thermal protection
• Stable with 2.2-μF ceramic capacitors (new chip)
• High PSRR (new chip):
– 70 dB at 1 kHz, 42 dB at 1 MHz
• Operating junction temperature: –40°C to +125°C
• Package: 5-pin SOT-23 (DBV)

2 Applications
• Residential breakers
• Solid state drives (SSD)
• Electricity meters
• Appliances
• Building automation

3 Description
The LP2980-ADJ is an adjustable-output, wide-input,
low-dropout voltage regulator supporting an input
voltage range up to 16 V and up to 50 mA of load
current. The LP2980-ADJ supports an output range
of 1.2 V to 15.0 V (new chip) and 1.23 V to 15.0 V
(legacy chip).
Additionally, the LP2980-ADJ (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
of greater than 70 dB at 1 kHz and 45 dB at
1 MHz helps 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 LP2980-ADJ is available in a 5-pin, 2.9-mm ×
1.6-mm SOT-23 (DBV) package.