S-812C33AMC-C2NT2G Seiko Instruments, S-812C33AMC-C2NT2G Datasheet - Page 20
![IC REG LDO 50MA 3.3V SOT-23-5](/photos/12/66/126682/s-812c33amc-c2nt2g_sml.jpg)
S-812C33AMC-C2NT2G
Manufacturer Part Number
S-812C33AMC-C2NT2G
Description
IC REG LDO 50MA 3.3V SOT-23-5
Manufacturer
Seiko Instruments
Datasheet
1.S-812C40AMC-C2UT2G.pdf
(53 pages)
Specifications of S-812C33AMC-C2NT2G
Regulator Topology
Positive Fixed
Voltage - Output
3.3V
Voltage - Input
Up to 16V
Voltage - Dropout (typical)
0.23V @ 10mA
Number Of Regulators
1
Current - Output
50mA (Min)
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-5, SC-74A, SOT-25
Number Of Outputs
1
Polarity
Positive
Input Voltage Max
18 V
Output Voltage
3.3 V
Output Type
Fixed
Dropout Voltage (max)
0.95 V
Output Current
75 mA
Line Regulation
20 mV
Load Regulation
45 mV
Voltage Regulation Accuracy
2 %
Maximum Power Dissipation
600 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
728-1021-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
S-812C33AMC-C2NT2G
Manufacturer:
SII/精工
Quantity:
20 000
20
HIGH OPERATING VOLTAGE CMOS VOLTAGE REGULATOR
S-812C Series
2. Constant Current Circuit
3. Output Voltage Adjustment Circuit
(Only for S-812CxxA Series (No short-circuit protection, power-off function))
This circuit can be used as a constant current circuit if making the composition seen in Figure 19 and
20. Constant current I
Note that by using a circuit in Figure 19, it is impossible to set the better driving ability to the constant
amperage (I
To gain the driving ability which exceeds the S-812C Series, there’s a way to combine a constant
current circuit and a current boosting circuit, as seen in Figure 20.
The maximum input voltage for a constant current circuit is 16 V + the voltage for device (V
It is not recommended to add a capacitor between the VIN (power supply) and VSS pin or the VOUT
(output) and VSS pin because the rush current flows at power-on.
Set the value of resistors R1 and R2 so that the S-812C Series is not affected by current consumption
I
Capacitor C
value according to the actual evaluation.
It is not recommended to add a capacitor between the VIN (power supply) and VSS pin or the VOUT
(output) and VSS pin because it causes output fluctuation and output oscillation due to power-on.
I
(V
By using the composition seen in Figure 21, users are able to increase the output voltage. The value of
output voltage V
V
(V
SS
O
OUT1
= (V
.
OUT(E)
OUT(E)
= V
OUT(E)
= effective output voltage)
= effective output voltage)
OUT(E)
1
O
÷ R
) than the S-812C Series basically has.
reduces output fluctuation due to power-on, power fluctuation and load fluctuation. Set the
× (R
L
OUT1
) + I
1
SS
is calculated from the following equation:
+ R
O
is calculated from the following equation:
2
) ÷ R
GND
V
IN
GND
V
V
GND
IN
Figure 20 Constant Current Boost Circuit
IN
1
+ R
VIN
Figure 19 Constant Current Circuit
C
2
IN
VSS
× I
Seiko Instruments Inc.
S-812C
Series
C
ON/OFF
C
SS
C
R
IN
VIN
IN
1
1
Tr1
VSS
S-812C
Series
VIN
Figure 21
VSS
S-812C
Series
VOUT
ON/OFF
VOUT
VOUT
V
V
R
R
O
O
1
2
R
R
L
L
I
I
O
O
V
V
OUT
OUT
V
C
Device
Device
OUT1
L
O
Rev.5.0
).
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