S-812C30AUA-C2KT2G Seiko Instruments, S-812C30AUA-C2KT2G Datasheet - Page 19
![IC REG LDO 50MA 3.0V SOT-89-3](/photos/12/63/126323/s-812c50aua-c3et2g_sml.jpg)
S-812C30AUA-C2KT2G
Manufacturer Part Number
S-812C30AUA-C2KT2G
Description
IC REG LDO 50MA 3.0V SOT-89-3
Manufacturer
Seiko Instruments
Datasheet
1.S-812C40AMC-C2UT2G.pdf
(53 pages)
Specifications of S-812C30AUA-C2KT2G
Regulator Topology
Positive Fixed
Voltage - Output
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
SC-62, SOT-89, TO-243 (3 Leads + Tab)
Number Of Outputs
1
Polarity
Positive
Input Voltage Max
18 V
Output Voltage
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
1000 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
728-1019-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
S-812C30AUA-C2KT2G
Manufacturer:
SEIKO
Quantity:
1 250
Part Number:
S-812C30AUA-C2KT2G
Manufacturer:
SEIKO
Quantity:
20 000
Rev.5.0
Selection of External Components
Application Circuit
1. Output Capacitor (C
1. Output Current Boost Circuit
The S-812C Series has an internal phase compensation circuit which stabilizes the operation regardless
of the change of output load. Therefore it is possible for users to have a stable operation without an
output capacitor (C
characteristics of transient response, vary depending on the output capacitor. In selecting the value of
output capacitor, refer to the data on C
characteristics”.
Set ESR 10 Ω or less when using a tantalum capacitor or an aluminum electrolytic capacitor. Pay
attention at low temperature, that aluminum electrolytic capacitor especially may oscillate because ESR
increases. Evaluate sufficiently including the temperature characteristics in use.
As shown in Figure 18, the output current can be boosted by externally attaching a PNP transistor.
Between the input voltage V
base-emitter voltage VBE which fully switches the PNP transistor on, S-812C Series controls the base
current in a PNP transistor so that the output voltage V
the S-812C Series.
Since the output current boosting circuit in Figure 18 does not have the good characteristics of transient
response, under the usage condition, confirm if output fluctuation due to power-on, and fluctuations of
power supply and load affect on the operation or not before use.
Note that the short-circuit protection circuit in the S-812C Series does not work as short-circuit protection
for this boost circuit.
_00
L
). However, the values of output overshoot and undershoot, which are the
L
)
HIGH OPERATING VOLTAGE CMOS VOLTAGE REGULATOR
GND
V
IN
IN
and the VIN pin (for power supply) in the S-812C Series, if setting the
C
IN
R
Seiko Instruments Inc.
1
L
dependency in “ Reference data 1. Transient response
Tr1
ON/OFF
VIN
Figure 18
S-812C
Series
OUT
VSS
reaches the level of voltage which is set by
VOUT
C
L
V
OUT
S-812C Series
19