Texas Instruments LP3982 | Demoboard ZGM230-DK2603A

Description

The LP3982 low-dropout (LDO) CMOS linearregulator is available in 1.8-V, 2.5-V, 2.82-V, 3-V,3.3-V, and adjustable versions. They deliver 300 mAof output current. Packaged in an 8-pin VSSOP, theLP3982 is pin- and package-compatible with Maxim'sMAX8860. The LM3982 is also available in the smallfootprint WSON package.The LP3982 suits battery-powered applicationsbecause of its shutdown mode (1 nA typical), lowquiescent current (90 μA typical), and LDO voltage(120 mV typical). The low dropout voltage allows formore utilization of a battery’s available energy byoperating closer to its end-of-life voltage. The LP3982device's PMOS output transistor consumes relativelyno drive current compared to PNP LDO regulators.This PMOS regulator is stable with small ceramiccapacitive loads (2.2 μF typical).These devices also include regulation fault detection,a bandgap voltage reference, constant currentlimiting, and thermal-overload protection.

Features

• 2.5-V to 6-V Input Range
• MAX8860 Pin, Package, and SpecificationCompatible
• 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 Withthe WEBENCH® Power Designer

Typical applications

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

More information

• Datasheet
• IC product information