HIGH WITHSTAND-VOLTAGE VOLTAGE REGULATOR WITH RESET FUNCTION
S-87x Series
Rev.8.0_00
Seiko Instruments Inc.
34
Type 1 (Rectangle wave between (V
OUT
+1) V and 10 V)
10 V
I
OUT
=40 mA, C
L
=10 μF, Ta=25°C
5 ms/div
Output voltage
[200 mV/div]
Input voltage
[1 V/div]
(V
OUT
+1) V
Overshoot amount: 350 mV
Undershoot amount: 325 mV
Figure 29 Ringing waveform (Type 1)
Table 20 Parameter dependency (Type 1)
Series Parameter Conditions
Method to decrease
overshoot
Method to decrease
undershoot
S-8750xxx
Load current (I
OUT
) 10 to 60 mA, C
L
=10 μF Decrease Decrease
Load capacitance (C
L
) 1 to 47 μF, I
OUT
=40 mA Increase Increase
Input fluctuation (ΔV
IN
*1
) 2 to 4 V Decrease Decrease
4 to 18 V Increase Decrease
Temperature (Ta)
−40 °C to +85 °C Low temperature Low temperature
S-8730xxx
Load current (I
OUT
) 10 to 60 mA, C
L
=10 μF Increase Decrease
Load capacitance (C
L
) 1 to 47 μF, I
OUT
=40 mA Increase Increase
Input fluctuation (ΔV
IN
*1
) 4 to 20 V Increase Decrease
Temperature (Ta) −40 °C to +85 °C Low temperature Low temperature
*1. High voltage value − low voltage value
For reference, the following pages describe the ringing in V
OUT
measured using the output load current (I
OUT
),
output load capacitance (C
L
), input fluctuation width (ΔV
IN
), and temperature (Ta) as parameters.
