Rev.4.2
_00
HIGH RIPPLE-REJECTION AND 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. Small SNT-4A and SC-82AB packages
realize 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:
SNT-4A,
SC-82AB
•
Small package:
•
Lead-free products
*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
Packages
Package Name
SNT-4A
SC-82AB
Drawing Code
Package
PF004-A
NP004-A
Tape
PF004-A
NP004-A
Reel
PF004-A
NP004-A
Land
PF004-A
－
Seiko Instruments Inc.
1
Rev.4.2
_00
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-1323 Series
Product Name Structure
•
The product types, output voltage and
package types
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
xx
−
xxx
TF
G
IC direction in tape specifications
*1
Product name (abbreviation)
*2
Package name (abbreviation)
PF：SNT-4A
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
Real-time operating system RTOS
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