ILE4263 Datasheet, PDF (8/10 Pages) IK Semicon Co., Ltd – Low-Drop Voltage Regulator

ILE4263
Timing of the Watchdog function
Watchdog pulse frequency should be higher than the frequency of the minimum pulse
sequence that is determined by the external reset delay capacitor C_D, nF. Timing calculation t_{WI, tr},
ms is carried out according to the formula
t_{WI, tr} = ((V_DU - V_DWL) / I_{D, wd}) × C_D,
(3)
where V_DWL – threshold voltage of the reset switch outputs to a low state, V,
I_{D, wd} – discharge current, uA.
Input
Inhibit
input
Reset
output
Output
From microcontroller
C1, C3
– capacitors
C2 – capacitor C_D
R1, R2 – resistors
Figure 2 – Typical Application Circuit Diagram of ILE4263
2016 July, Ver.0