S-81218SG データシートの表示（PDF） - Seiko Instruments Inc
部品番号
コンポーネント説明
メーカー
S-81218SG Datasheet PDF : 33 Pages
| |||
HIGH-PRECISION VOLTAGE REGULATOR
S-812XXSG Series
Reference data Line transient response of S-81250SG
1. IOUT dependency
1.2 CL=10F
1.0 Ta=25C
Ringing 0.8
amount
(V)
0.6
0.4
0.2
0.0
0 5 10 15 20 25 30
-
IOUT (mA)
3. VIN dependency
VIN shows the difference between the low
voltage fixed to 6 V and the high voltage.
For example, VIN = 2 V means the difference
between 6 V and 8 V.
1.2
CL=10F
1.0 Ta=25C
IOUT=10mA
Ringing 0.8
amount
(V)
0.6
0.4
0.2
0.0
01 2345
VIN (V)
2. CL dependency
1.2
IOUT=10mA
1.0
Ta=25C
Ringing 0.8
amount
(V)
0.6
0.4
0.2
0.0
0 10 20 30 40 50
CL (F)
4. Temperature dependency
1.2
1.0
Ringing 0.8
amount
(V)
0.6
0.4
0.2
0.0
-40
IOUT=10mA
CL=10F
0 40 80
Ta (C)
Undershoot
Overshoot
Undershoot
Overshoot
2. Load transient response
The overshoot and undershoot are caused in the output voltage if the output current fluctuates while the input
voltage is costant. Figure 9 shows the output voltage fluctuation due to output current change between 10mA and
1 A in square wave. Table 20 shows the parameter dependency when output current fluctuates. For reference,
Figure 10 describes the measuring circuit.
1A
Output current 10mA
Output voltage
Overshoot
Undershoot
Figure 9 Output voltage fluctuation due to output current fluctuation
VIN
VOUT
S-812XXSG
VSS
+
CL
-
Oscilloscope
Figure 10 Measuring circuit
Seiko Instruments Inc.
15
Share Link: 