S-814 Series
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© Seiko Instruments Inc., 1999-2010
LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0
_00
The S-814 Series is a low dropout voltage, high output voltage accuracy and low current consumption positive
voltage regulator developed utilizing CMOS technology.
Built-in low ON-resistance transistors provide low dropout voltage and large output current. A shutdown circuit
ensures long battery life.
Various types of output capacitors can be used in the S-814 Series compared with the past CMOS voltage
regulators. (i.e., Small ceramic capacitors can also be used in the S-814 Series.)
The SOT-23-5 miniaturized package and the SOT-89-5 packages are recommended to use for configuring
portable devices and large output current applications, respectively.
Features
•
Low current consumption
At operation mode:
At shutdown mode:
•
Output voltage:
•
High accuracy output voltage:
•
Output current:
•
•
•
•
•
Typ. 30
μA,
Max. 40
μA
Typ. 100 nA, Max. 500 nA
0.1 V steps between 2.0 and 6.0 V
±2.0
%
110 mA capable: 3.0 V output product, at V
IN
=4
V
*1
180 mA capable: 5.0 V output product, at V
IN
=6
V
*1
Typ. 170 mV:
5.0 V output product, at I
OUT
=60
mA
Low dropout voltage:
Built-in shutdown circuit
Built-in short-circuit protection
Low ESR capacitor, e.g. a ceramic capacitor of 0.47
μF
or more, can be used as the output capacitor.
Lead-free, Sn 100%, halogen-free
*2
*1.
Attention should be paid to the power dissipation of the package when the output current is large.
*2.
Refer to “
Product Name Structure”
for details.
Applications
•
Power source for battery-powered devices, personal communication devices, and home electric/electronic
appliances.
Packages
•
SOT-23-5
•
SOT-89-5
Seiko Instruments Inc.
1
Rev.3.0
_00
Product Name Structure
1. Product Name
S-814 x xx A xx- xxx T2 x
LOW DROPOUT CMOS VOLTAGE REGULATOR
S-814 Series
Environmental code
U: Lead-free (Sn 100%), halogen-free
G: Lead-free (for details, please contact our sales office)
IC direction in tape specifications
*1
Product name (Abbreviation)
*2
Package name (Abbreviation)
MC: SOT-23-5
UC: SOT-89-5
Output voltage
20 to 60
(e.g., When output voltage is 2.0 V, it is expressed as 20.)
Product type
*3
A: ON / OFF pin positive logic
B: ON / OFF pin negative logic
*1.
Refer to the tape specifications at the end of this book.
*2.
Refer to the
Table 1
in “3.
Product Name List”.
*3.
Refer to “3.
ON/OFF pin (Shutdown pin)”
in “
Operation”.
2. Package
Drawing Code
Tape
MP005-A-C-SD
UP005-A-C-SD
Package Name
SOT-23-5
SOT-89-5
Package
MP005-A-P-SD
UP005-A-P-SD
Reel
MP005-A-R-SD
UP005-A-R-SD
Seiko Instruments Inc.
3
Rev.3.0
_00
Pin Configurations
SOT-23-5
Top view
5
4
LOW DROPOUT CMOS VOLTAGE REGULATOR
S-814 Series
Table 2
Pin No.
Symbol
Pin description
1
VIN
Voltage input pin
2
VSS
GND pin
3
ON/OFF
Shutdown pin
*1
4
NC
No connection
5
VOUT
Voltage output pin
*1.
The NC pin is electrically open.
The NC pin can be connected to VIN or VSS.
1
2
3
Figure 2
SOT-89-5
Top view
5
4
Table 3
Pin No.
Symbol
Pin description
1
VOUT
Voltage output pin
2
VSS
GND pin
*1
3
NC
No connection
4
ON/OFF
Shutdown pin
5
VIN
Voltage input 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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