S-812C33AUA-C2N-T2G Seiko Instruments, S-812C33AUA-C2N-T2G Datasheet - Page 16

• Manufacturer Part Number: S-812C33AUA-C2N-T2G
• Description: IC, LINEAR VOLT REGULATOR, 3.3V, SOT89-3
• Manufacturer: Seiko Instruments

Specifications of S-812C33AUA-C2N-T2G

• Primary Input Voltage: 5.3V
• Output Voltage Fixed: 3.3V
• Dropout Voltage Vdo: 120mV
• No. Of Outputs: 1
• No. Of Pins: 3
• Output Current: 50mA
• Operating Temperature Range: -40°C To +85°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

16
HIGH OPERATING VOLTAGE CMOS VOLTAGE REGULATOR
S-812C Series
Operation
1. Basic Operation
2. Output Transistor
Figure 16 shows the block diagram of the S-812C Series.
The error amplifier compares the reference voltage (V
divided by feedback resistors R
output voltage which is not influenced by the input voltage and temperature change, to the output
transistor.
In the S-812C Series, a low on-resistance P-channel MOS FET is used as the output transistor.
Be sure that V
to inverse current which flows, because of a parasitic diode between the VIN and VOUT pin.
Current supply
OUT
VSS
VIN
*1. Parasitic diode
does not exceed V
V
Reference
ref
voltage
circuit
s
and R
Error amplifier
IN
Seiko Instruments Inc.
+ 0.3 V to prevent the voltage regulator from being damaged due
f
. It supplies the gate voltage necessary to maintain the constant
+
−
Figure 16
ref
) with V
fb
R
R
, which is the output voltage resistance-
f
S
*1
VOUT
Rev.4.1
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