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Micropower, Ultra-Low-Dropout, Low-Noise, 300-mA CMOS Regulator

Qty Price
1-9 $0.63
10-24 $0.55
25-99 $0.51
100-249 $0.43
250-499 $0.39
500-749 $0.30
750-999 $0.23
1000+ $0.20


  • 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

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Texas Instruments  LP3982IMM-ADJ/NOPB

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-pinVSSOP, the LP3982 is pin- and package-compatible with Maxim’s MAX8860. The LM3982 is also availablein the small footprint WSON package.

The LP3982 suits battery-powered applications because of its shutdown mode (1 nAtypical), low quiescent current (90 µA typical), and LDO voltage (120 mV typical). The low dropoutvoltage allows for more utilization of a battery’s available energy by operating closer to itsend-of-life voltage. The LP3982 device’s PMOS output transistor consumes relatively no drivecurrent compared to PNP LDO regulators.

This PMOS regulator is stable with small ceramic capacitive loads (2.2 µFtypical).

These devices also include regulation fault detection, a bandgap voltage reference,constant current limiting, and thermal-overload protection.