LP2985A-29 Status: ACTIVE

Product Information

Features

• Output Tolerance of
  • 1% (A Grade)
  • 1.5% (Standard Grade)
• Ultra-Low Dropout, Typically
  • 280 mV at Full Load of 150 mA
  • 7 mV at 1 mA
• Wide V_IN Range . . . 16 V Max
• Low I_Q . . . 850 µA at Full Load at 150 mA
• Shutdown Current . . . 0.01 µA Typ
• Low Noise . . . 30 µV_RMS With 10-nF Bypass Capacitor
• Stable With Low-ESR Capacitors, Including Ceramic
• Overcurrent and Thermal Protection
• High Peak-Current Capability
• ESD Protection Exceeds JESD 22
  • 2000-V Human-Body Model (A114-A)
  • 200-V Machine Model (A115-A)
• PORTABLE APPLICATIONS
  • Cellular Phones
  • Palmtop and Laptop Computers
  • Personal Digital Assistants (PDAs)
  • Digital Cameras and Camcorders
  • CD Players
  • MP3 Players

DESCRIPTION/ORDERING INFORMATION

The LP2985 family of fixed-output, low-dropout regulators offers exceptional, cost-effective performance for both portable and nonportable applications. Available in voltages of 1.8 V,
2.5 V, 2.8 V, 2.9 V, 3 V, 3.1 V, 3.3 V, 5 V and 10 V, the family has an output tolerance of 1% for the A version (1.5% for the non-A version) and is capable of delivering 150-mA continuous load current. Standard regulator features, such as overcurrent and overtemperature protection, are included.

The LP2985 has a host of features that makes the regulator an ideal candidate for a variety of portable applications:

• Low dropout: A PNP pass element allows a typical dropout of 280 mV at 150-mA load current and 7 mV at 1-mA load.
• Low quiescent current: The use of a vertical PNP process allows for quiescent currents that are considerably lower than those associated with traditional lateral PNP regulators.
• Shutdown: A shutdown feature is available, allowing the regulator to consume only 0.01 µA when the ON/OFF pin is pulled low.
• Low-ESR-capacitor friendly: The regulator is stable with low-ESR capacitors, allowing the use of small, inexpensive, ceramic capacitors in cost-sensitive applications.
• Low noise: A BYPASS pin allows for low-noise operation, with a typical output noise of
  30 µV_RMS, with the use of a 10-nF bypass capacitor.
• Small packaging: For the most space-constrained needs, the regulator is available in the SOT-23 package.