DIA7965

Version 1.0, Dec 2023

www.dioo.com

© 2023 DIOO MICROCIRCUITS CO., LTD.

10

9.9. Power supply rejection ratio

The DIA7965 features a very high Power Supply Rejection ratio to meet the requirements of RF and analog

circuits. If desired the PSRR at higher frequencies in the range 100 kHz ~ 1 MHz can be tuned by the selection

of COUT capacitor and proper PCB layout.

9.10. Turn-on time

The turn-on time is defined as the time period from EN activation to the point in which VOUT will reach 90% of its

nominal value. The time is dependent on various application conditions such as VOUT(NOM), COUT, TA.

10. Layout Guidelines

An optimal layout can greatly improve transient performance, PSRR, and noise. CIN and COUT capacitors should

be placed near device pins and PCB traces should be widely spaced for excellent performance. Place ground

return connections to the input and output capacitors. Larger copper area connected to the pins will also improve

the device thermal resistance. For better power dissipation and lower device temperatures, tie the exposed pad

to the GND pin.