Rev.3.2
_00
HIGH RIPPLE-REJECTION LOW DROPOUT
LOW INPUT-AND-OUTPUT CAPACITANCE CMOS VOLTAGE REGULATOR
S-1200 Series
The S-1200 Series is a positive voltage regulator with
a low dropout voltage, high output voltage accuracy
developed based on CMOS technology.
A 0.1
µF
small ceramic capacitor can be used. It
operates with low current consumption of 18
µA
typ.
A built-in Output current protector prevents the load
current from exceeding the current capacitance of the
output transistor.
Compared with the voltage regulators using the
conventional CMOS process, small ceramic
capacitors are also available. Furthermore a small
SNT-6A(H) and SOT-23-5 packages realize high-
density mounting.
Features
1.5 V to 5.5 V, selectable in 0.1 V steps.
•
Output voltage:
•
Low ESR capacitor can be used: A ceramic capacitor of 0.1
µF
or more can be used for the output
capacitor.
2.0 V to 10.0 V
•
Wide input voltage range:
•
High-accuracy output voltage:
±1.0%
•
Low dropout voltage:
140 mV typ. (3.0 V output product, I
OUT
=
100 mA)
•
Low current consumption:
During operation: 18
µA
typ., 40
µA
max.
During shutdown: 0.01
µA
typ., 1.0
µA
max.
•
Output current:
150 mA output is possible (@ V
IN
≥
V
OUT(S)
+
1.0 V)
*1
70 dB typ. (@ 1.0 kHz, 1.5
V
≤
V
OUT
≤
3.0 V
)
•
High ripple rejection:
65 dB typ. (@ 1.0 kHz,
3.1 V
≤
V
OUT
≤
5.5 V
)
Overcurrent of output transistor can be restricted.
•
Built-in overcurrent protector:
Ensures long battery life.
•
Built-in ON/OFF circuit:
SOT-23-5, SNT-6A(H)
•
Small package:
•
Lead-free products
*1.
Attention should be paid to the power dissipation of the package when the output current is large.
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-6A(H)
SOT-23-5
Drawing Code
Package
PI006-A
MP005-A
Tape
PI006-A
MP005-A
Reel
PI006-A
MP005-A
Land
PI006-A
Seiko Instruments Inc.
1
HIGH RIPPLE-REJECTION LOW DROPOUT LOW INPUT-AND-OUTPUT CAPACITANCE CMOS VOLTAGE REGULATOR
Rev.3.2
_00
S-1200 Series
Product Code Structure
•
The product types, output voltage value and package types for the S-1200 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-1200
x
xx
-
xxxx
G
Package code and packing specifications
I6T2 : SNT-6A(H), Tape
M5T1: SOT-23-5, Tape
Output voltage
15 to 55
(e.g. When output voltage is 1.5 V, it is expressed as 15.)
Product type
*2
*1
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 “3.
Shutdown (ON/OFF pin)”
in the “
Operation”.
Seiko Instruments Inc.
3
HIGH RIPPLE-REJECTION LOW DROPOUT LOW INPUT-AND-OUTPUT CAPACITANCE CMOS VOLTAGE REGULATOR
Rev.3.2
_00
S-1200 Series
Pin Configurations
SNT-6A(H)
Top view
1
2
3
6
5
4
Table 2
Pin No.
Symbol
Pin Description
1
VOUT
Output voltage pin
2
VSS
GND pin
*1
3
NC
No connection
4
ON/OFF
Shutdown pin
5
VSS
GND pin
6
VIN
Input voltage pin
*1.
The NC pin is electrically open.
The NC pin can be connected to VIN or VSS.
Table 3
Figure 2
SOT-23-5
Top view
5
4
Pin No.
Symbol
Description
1
VIN
Input voltage pin
2
VSS
GND pin
3
ON/OFF
Shutdown pin
*1
4
NC
No connection
5
VOUT
Output voltage pin
*1.
The NC pin is electrically open.
The NC pin can be connected to VIN or VSS.
1
2
3
Figure 3
Seiko Instruments Inc.
5
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