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參數(shù)資料
| 型號： | S-875271C |
| 廠商： | Seiko Instruments Inc. |
| 英文描述： | High Withstand-Voltage Regulators With a Reset Function, Which Integrates High-Precision Voltage Detection And Voltage Regulation Circuits On a Single Chip.(VR輸出5.2V,VD檢測7.1V,帶復(fù)位功能的高抗電壓穩(wěn)壓器（芯片內(nèi)集成了高精度的電壓檢測器VD和穩(wěn)壓器VR)) |
| 中文描述： | 高耐壓，隨著復(fù)位功能，它集成了高精度電壓檢測電路和電壓調(diào)整在單一芯片上。（村輸出5.2V，性病檢測7.1V，帶復(fù)位功能的高抗電壓穩(wěn)壓器（芯片內(nèi)穩(wěn)壓器集成了高精度的電壓檢測器和穩(wěn)壓器性病村）） |
| 文件頁數(shù)： | 20/34頁 |
| 文件大?。?/td> | 239K |
| 代理商： | S-875271C |
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HIGH WITHSTAND-VOLTAGE VOLTAGE REGULATOR WITH RESET FUNCTION
S-87X Series
Seiko Instruments Inc.
19
Transient Response
An undershoot or an overshoot may occur in the output voltage of the voltage regulator if input voltage or load current fluctuates
transiently. If an undershoot is large, the voltage detector operates to output reset signal in the S-87XXXXB Series in which the
voltage detector detects the output voltage of the regulator. If an overshoot is large, the load circuit is adversely affected.
Therefore it is important to determine the capacitor value so as to minimize undershoot and overshoot.
1. Line Transient Response due to Input Voltage Ffluctuation
Input voltage fluctuation differs depending on the types of the signal applied: type
Ι
which is a rectangular wave between
(V
OUT
+ 1) V and 10 V, and type
ΙΙ
which is a rectangular wave from 0 V to 10 V (see Figure 16). The ringing waveforms and
parameter dependency of each type are described below. The measuring circuit is shown in Figure 17 for reference, .
Figure 17 Measuring Circuit
Input voltage
Output voltage
deviation
Input voltage
Output voltage
deviation
0 V
10 V
Undershoot
Overshoot
Figure 16
Overshoot
Undershoot
10 V
(V
OUT
+ 1)
V
Rise/fall time (time between 10% and 90%) is 1
μ
s.
Type I: Rectangular wave between (V
OUT
+ 1) V and 10 V
Type II: Rectangular wave from 0 V to 10 V
V
SS
S-87X
Series
P.G
V
OUT
V
IN
R
O
C
L
*
+
Fast amplifier
Oscilloscope
10:1
probe
* Al electrolytic capacitor
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