AP7361C Datasheet, PDF (10/22 Pages) Diodes Incorporated – 1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE

Performance Characteristics (Cont.)
AP7361C
Application Information
Input Capacitor
A 1μF ceramic capacitor is recommended between IN and GND pins to decouple input power supply glitch and noise. The amount of the
capacitance may be increased without limit. This input capacitor must be located as close as possible to the device to assure input stability and
reduce noise. For PCB layout, a wide copper trace is required for both IN and GND pins. A lower ESR capacitor type allows the use of less
capacitance, while higher ESR type requires more capacitance.
Output Capacitor
The output capacitor is required to stabilize and improve the transient response of the LDO. The AP7361C is stable with very small ceramic output
capacitors. Using a ceramic capacitor value that is at least 2.2μF with 10mΩ ≦ ESR ≦ 300mΩ on the output ensures stability. Higher capacitance
values help to improve line and load transient response. The output capacitance may be increased to keep low undershoot and overshoot. Output
capacitor must be placed as close as possible to OUT and GND pins.
AP7361C
Document number: DS37274 Rev. 2 - 2
10 of 22
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September 2015
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