Rev.2.3
_00
HIGH RIPPLE-REJECTION
SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-1323 Series
The S-1323 Series is a positive voltage regulator
with a low dropout voltage, high output voltage
accuracy, and low current consumption developed
based on CMOS technology.
A built-in low on-resistance transistor provides a
low dropout voltage and large output current, and a
built-in overcurrent protector prevents the load
current from exceeding the current capacitance of
the output transistor. An ON/OFF circuit ensures a
long battery life. Compared with the voltage
regulators using the conventional CMOS process,
a larger variety of capacitors are available,
including small ceramic capacitors. A small SC-
82AB package realizes high-density mounting.
Features
1.5 V to 5.5 V, selectable in 0.1 V steps.
±1.0%
During operation: 70
µA
typ., 90
µA
max.
During shutdown: 0.1
µA
typ., 1.0
µA
max.
•
High peak current capability:
150 mA output is possible (at V
IN
≥
V
OUT(S)
+
1.0 V)
*1
Ensures long battery life.
•
Built-in ON/OFF circuit:
•
Low ESR capacitor can be used: A ceramic capacitor of 1.0
µF
or more can be used for the output
capacitor.
70 dB typ. (at 1.0 kHz)
•
High ripple rejection:
Overcurrent of output transistor can be restricted.
•
Built-in overcurrent protector:
SC-82AB
•
Small package:
*1.
Attention should be paid to the power dissipation of the package when the output current is large.
•
Output voltage:
•
High-accuracy output voltage:
•
Low current consumption:
Applications
•
Power supply for battery-powered devices
•
Power supply for personal communication devices
•
Power supply for home electric/electronic appliances
•
Power supply for cellular phones
Package
Package Name
SC-82AB
Package
NP004-A
Drawing Code
Tape
NP004-A
Reel
NP004-A
Seiko Instruments Inc.
1
HIGH RIPPLE-REJECTION SMALL PACKAGE CMOS VOLTAGE REGULATOR
Rev.2.3
_00
S-1323 Series
Product Code Structure
•
The product types and output voltage for the S-1323 Series can be selected at the user’s request. Refer
to the “Product name” for the meanings of the characters in the product name and “Product name list” for
the full product names.
1. Product name
S-1323
x
xx
NB
–
xxx
–
TF
IC direction in tape specifications
*1
Product name (abbreviation)
*2
Package name (abbreviation)
NB: SC-82AB
Output voltage
15 to 55
(e.g. when the output voltage is 1.5 V, it is
expressed as 15.)
Product type
*3
A: ON/OFF pin negative logic
B: ON/OFF pin positive logic
*1.
Refer to the taping specifications at the end of this book.
*2.
Refer to the product name list.
*3.
Refer to 3. Shutdown (ON/OFF pin) under the Operation.
Seiko Instruments Inc.
3
HIGH RIPPLE-REJECTION SMALL PACKAGE CMOS VOLTAGE REGULATOR
Rev.2.3
_00
S-1323 Series
Pin Configuration
SC-82AB
Top view
4
3
Table 2
Pin No.
1
2
3
4
Symbol
VOUT
VSS
ON/OFF
VIN
Description
Output voltage pin
GND pin
Shutdown pin
Input voltage pin
1
2
Figure 2
Absolute Maximum Ratings
Table 3
Item
Input voltage
Output voltage
Power dissipation
Operating ambient temperature
Storage temperature
Symbol
V
IN
V
ON/OFF
V
OUT
P
D
T
opr
T
stg
(Ta
=
25°C unless otherwise specified)
Absolute Maximum Rating
Unit
V
V
SS
−
0.3 to V
SS
+
7
V
SS
−
0.3 to V
IN
+
0.3
V
SS
−
0.3 to V
IN
+
0.3
200
mW
−40
to
+85
°C
−40
to
+125
Caution The absolute maximum ratings are rated values exceeding which the product could suffer
physical damage. These values must therefore not be exceeded under any conditions.
Seiko Instruments Inc.
5
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