LP2981-33DBVR LP2981-30DBVR Power Path Management IC LDO Voltage Regulators MICROPOWER 50 MA ULTRA LDO REGULATOR

1 Features

• Output Tolerance of

• – 0.75% (A Grade)

• – 1.25% (Standard Grade)

• Ultra-Low Dropout Typically:
  – 200mVCM GROUPllLoadof100mA – 7mVat1mA

• Low IQ: 600 μA Typical at Full Load of 100 mA

• Shutdown Current: 0.01 μA Typical

• Fast Transient Response to Line and Load

• Overcurrent and Thermal Protection

• High Peak Current Capability

• Low ZOUT Over Wide Frequency Range

• −40°C to 125°C Temperature Range

2 Applications

• Smart Meters

• Servo and Motor Control

• Mobile Phones and Cameras

• Audio and Portable Speakers

• Telecommunication and Networking

The LP2981 and LP2981A families of fixed-output, low-dropout regulators offer exceptional, cost- effective performance for both portable and non- portable applications. Available in fixed voltages of 2.8 V, 3 V, 3.3 V, and 5 V, the family has an output tolerance of 0.75% for the A-grade devices (1.25% for the standard grade) and is capable of delivering 100-mA continuous load current. Standard regulator features, such as overcurrent and overtemperature protection, are included.

The LP2981 and LP2981A have features that make the regulators ideal candidates for a variety of portable applications:

• Low dropout: A PNP pass element allows a typical dropout of 200 mV at 100-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.

  Device Information