S-1323B21NB-N8GTFG Seiko Instruments, S-1323B21NB-N8GTFG Datasheet - Page 12

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S-1323B21NB-N8GTFG

Manufacturer Part Number
S-1323B21NB-N8GTFG
Description
IC REG LDO 150MA 2.1V SC-82AB
Manufacturer
Seiko Instruments
Datasheet

Specifications of S-1323B21NB-N8GTFG

Regulator Topology
Positive Fixed
Voltage - Output
2.1V
Voltage - Input
Up to 6.5V
Voltage - Dropout (typical)
0.5V @ 150mA
Number Of Regulators
1
Current - Output
150mA (Min)
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SC-70-4, SC-82-4, SOT-323-4, SOT-343
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
12
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-1323 Series
Operation
2. Output transistor
1. Basic operation
Figure 12 shows the block diagram of the S-1323 Series.
The error amplifier compares the reference voltage (V
divided by feedback resistors R
to ensure a certain output voltage free of any fluctuations of input voltage and temperature.
The S-1323 Series uses a low on-resistance P-channel MOS FET as the output transistor.
Be sure that V
to inverse current flowing from VOUT pin through a parasitic diode to VIN pin.
*1. Parasitic diode
VSS
VIN
OUT
Current
supply
does not exceed V
Reference voltage
V
ref
circuit
s
and R
+
amplifier
IN
Error
f
+ 0.3 V to prevent the voltage regulator from being damaged due
. It supplies the output transistor with the gate voltage necessary
Seiko Instruments Inc.
Figure 12
ref
) with V
R
R
s
f
fb
, which is the output voltage resistance-
V
fb
*1
VOUT
Rev.5.0
_00

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