LP2986 Datasheet, PDF (15/33 Pages) National Semiconductor (TI) – Micropower, 200 mA Ultra Low-Dropout Fixed or Adjustable Voltage Regulator

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8 Application and Implementation
LP2986
SNVS137I – MARCH 1999 – REVISED SEPTEMBER 2015
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
The LP2986 can provide 200-mA output current with 2.1-V to 16-V input. It is stable with a minimum of 4.7-µF
ceramic output capacitor. An input capacitor of (≥ 2.2 μF) is required. An optional external bypass capacitor
reduces the output noise without slowing down the load transient response. Typical output noise is 160 µV_RMS at
frequencies from 300 Hz to 50 kHz. Typical power supply rejection is 65 dB at 1 kHz.
8.2 Typical Applications
Figure 29. Application Using Internal Resistive Divider
Figure 30. Application Using External Divider
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