ZHCSU10P March 2000 – February 2025 LP2981-N
PRODUCTION DATA
For the legacy chip, ceramic capacitors are not recommended for use at the output of the LDO. This recommendation is because the ESR of a ceramic can be low enough to go below the minimum stable value for the LP2981-N (legacy chip). A 2.2μF ceramic is measured and found to have an ESR of approximately 15mΩ, which is low enough to cause oscillations. If a ceramic capacitor is used on the output, a 1Ω resistor is required to be placed in series with the capacitor.