1 Features
1• 2.5-V to 6-V Input Range
• MAX8860 Pin, Package, and Specification
Compatible
• 300-mA Output Current
• 120-mV Typical Dropout at 300 mA
• 90-μA Typical Quiescent Current
• 1-nA Typical Shutdown Mode
• 60-dB Typical PSRR
• 120-μs Typical Turnon Time
• Stable With Small Ceramic Output Capacitors
• 37-μVRMS Output Voltage Noise
(10 Hz to 100 kHz)
• Overtemperature/Overcurrent Protection
• ±2% Output Voltage Tolerance
• Create a Custom Design Using the LP3982 With
the WEBENCH® Power Designer

2 Applications
• Wireless Handsets
• DSP Core Power
• Battery Powered Electronics
• Portable Information Appliances

3 Description
The LP3982 low-dropout (LDO) CMOS linear
regulator is available in 1.8-V, 2.5-V, 2.82-V, 3-V,
3.3-V, and adjustable versions. They deliver 300 mA
of output current. Packaged in an 8-pin VSSOP, the
LP3982 is pin- and package-compatible with Maxim's
MAX8860. The LM3982 is also available in the small
footprint WSON package.
The LP3982 suits battery-powered applications
because of its shutdown mode (1 nA typical), low
quiescent current (90 μA typical), and LDO voltage
(120 mV typical). The low dropout voltage allows for
more utilization of a battery’s available energy by
operating closer to its end-of-life voltage. The LP3982
device's PMOS output transistor consumes relatively
no drive current compared to PNP LDO regulators.
This PMOS regulator is stable with small ceramic
capacitive loads (2.2 μF typical).
These devices also include regulation fault detection,
a bandgap voltage reference, constant current
limiting, and thermal-overload protection.