S-817A18ANB-CUH-T2 Seiko Instruments, S-817A18ANB-CUH-T2 Datasheet - Page 28

• Manufacturer Part Number: S-817A18ANB-CUH-T2
• Description: Low Dropout (LDO) Regulators 1.8V 1.2uA 2.0%
• Manufacturer: Seiko Instruments

Specifications of S-817A18ANB-CUH-T2

• Number Of Outputs: 1
• Polarity: Positive
• Input Voltage Max: 12 V
• Output Voltage: 1.8 V
• Output Voltage Tolerance: +/- 2 %
• Output Type: Fixed
• Dropout Voltage (max): 1.58 V
• Output Current: 50 mA
• Line Regulation: 20 mV
• Load Regulation: 20 mV
• Voltage Regulation Accuracy: 2 %
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SC-82AB
• Minimum Operating Temperature: - 40 C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

28
SUPER-SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-817 Series
Load dependencies of undershoot at power fluctuation C
V
DD
(0.02 V/div)
V
dependencies of undershoot at power fluctuation
OUT
0.5
0.4
0.3
0.2
0.1
0.08
0.06
0.04
0.02
0.1
0
10 V
1.E-07 1.E-06 1.E-05 1.E-04 1.E-03 1.E-02 1.E-01
4 V
3 V
0
0
V
IN
2
=V
V
V
IN
DD
IN
=V
→V
=10 V→4 V,I
OUT(S)
TIME(50 µ s/div)
OUT(S)
4
I
V
OUT
+2 V→V
DD
2V
+1 V, I
(A)
(V)
2V
OUT
6
OUT(S)
OUT
=1 mA, C
=1 mA, C
3V
1 V, C
3V
8
5V
L
Seiko Instruments Inc.
=1 µF
L
L
=1 µF
=1 µF
5V
10
“Ta” dependencies of undershoot at power fluctuation
L
dependencies of undershoot at power fluctuation
0.8
0.6
0.4
0.2
0.08
0.06
0.04
0.02
1
0
0.1
0.01
V
0
IN
-50
=V
2V
OUT(S)
V
IN
+2 V→V
3V
2V
=V
OUT(S)
0.1
5V
0
3V
OUT(S)
+2 V→V
C
Ta(°C)
L
+1 V, I
(µF)
OUT(S)
OUT
1
+1 V, I
50
=1 mA, C
5V
OUT
Rev.3.0
=1 mA
L
=1 µF
10
100
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