Rev.1.4
_00
LOW DROPOUT CMOS VOLTAGE REGULATOR
S-818 Series
The S-818 Series is a positive voltage regulator
developed by CMOS technology and featured by low
dropout voltage, high output voltage accuracy and low
current consumption.
Built-in low on-resistance transistor provides low
dropout voltage and large output current. A ceramic
capacitor of 2
µF
or more can be used as an output
capacitor. A shutdown circuit ensures long battery life.
The SOT-23-5 miniaturized package and the SOT-89-5
package are recommended for configuring portable
devices and large output current applications,
respectively.
Features
•
Low current consumption:
•
•
•
•
•
•
•
At operation mode: Typ. 30
µA,
Max. 40
µA
At shutdown mode: Typ. 100 nA, Max. 500 nA
Output voltage:
2.0 to 6.0 V, selectable in 0.1 V steps.
High accuracy output voltage:
±2.0%
Peak output current:
200 mA capable (3.0 V output product, V
IN
=4 V)
*1
300 mA capable (5.0 V output product, V
IN
=6 V)
*1
Low dropout voltage:
Typ. 170 mV (5.0 V output product, I
OUT
=60 mA)
A ceramic capacitor (2
µF
or more) can be used as an output capacitor.
Built-in shutdown circuit
Small package:
SOT-23-5, SOT-89-5
*1.
Attention should be paid to the power dissipation of the package when the output current is large.
Applications
•
Power source for battery-powered devices, personal communication devices and home electric/electronic
appliances
Packages
Package Name
SOT-23-5
SOT-89-5
Package
MP005-A
UP005-A
Drawing Code
Tape
MP005-A
UP005-A
Reel
MP005-A
UP005-A
Seiko Instruments Inc.
1
Rev.1.4
_00
Product Code Structure
1. Product name selection guide
S-818
x
xx
A
xx
-
xxx
LOW DROPOUT CMOS VOLTAGE REGULATOR
S-818 Series
- T2
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 the output voltage is 2.0 V, it is
expressed as 20.)
Product type
*3
A: ON/OFF pin positive logic, high active
B: ON/OFF pin negative logic, low active
*1.
Refer to the taping specifications at the end of this book.
*2.
Refer to the “Table
1”
under the “2.
Product name list”.
*3.
Refer to “3.
ON/OFF pin (Shutdown pin)”
under the “
Operation”.
Seiko Instruments Inc.
3
Rev.1.4
_00
Pin Configurations
SOT-23-5
Top view
5
4
LOW DROPOUT CMOS VOLTAGE REGULATOR
S-818 Series
Table 2
Pin No.
Symbol
Pin description
1
VIN
Input voltage pin
2
VSS
GND pin
3
ON/OFF
Shutdown pin
*1
NC
No connection
4
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 2
SOT-89-5
Top view
5
4
Table 3
Pin No.
Symbol
Pin description
1
VOUT
Output voltage pin
2
VSS
GND pin
*1
3
NC
No connection
ON/OFF
Shutdown pin
4
VIN
Input voltage pin
5
*1.
The NC pin is electrically open.
The NC pin can be connected to VIN or VSS.
1
2
3
Figure 3
Absolute Maximum Ratings
Table 4
(Ta=25°C unless otherwise specified)
Item
Symbol
Absolute Maximum Rating
Unit
Input voltage
V
IN
V
SS
−0.3
to V
SS
+12
V
V
ON/OFF
V
SS
−0.3
to V
SS
+12
Output voltage
V
OUT
V
SS
−0.3
to V
IN
+0.3
Power dissipation
P
D
SOT-23-5
250
mW
SOT-89-5
500
Operating ambient temperature
Topr
−40
to
+85
°C
Storage temperature
Tstg
−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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