Rev.1.3
_10
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%
*1
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)
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
•
SOT-23-5 (Package drawing code: MP005-A)
•
SOT-89-5 (Package drawing code: UP005-A)
Seiko Instruments Inc.
1
LOW DROPOUT CMOS VOLTAGE REGULATOR
S-818 Series
Block Diagram
*1
Rev.1.3
_10
VIN
VOUT
ON/OFF
ON/OFF
circuit
+
−
Reference
voltage
VSS
*1.
Parasitic diode
Figure 1
2
Seiko Instruments Inc.
Rev.1.3
_10
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
Product name (abbreviation)
*2
*1
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
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”.
2. Product name list
Table 1
SOT-23-5
SOT-89-5
Output Voltage
2.0 V±2.0 %
S-818A20AMC-BGA-T2
S-818A20AUC-BGA-T2
2.5 V±2.0 %
S-818A25AMC-BGF-T2
S-818A25AUC-BGF-T2
2.8 V±2.0 %
S-818A28AMC-BGI-T2
S-818A28AUC-BGI-T2
3.0 V±2.0 %
S-818A30AMC-BGK-T2
S-818A30AUC-BGK-T2
3.1 V±2.0 %
S-818A31AMC-BGL-T2
3.2 V±2.0 %
S-818A32AMC-BGM-T2
S-818A32AUC-BGM-T2
3.3 V±2.0 %
S-818A33AMC-BGN-T2
S-818A33AUC-BGN-T2
3.5 V±2.0 %
S-818A35AUC-BGP-T2
3.6 V±2.0 %
S-818A36AMC-BGQ-T2
S-818A36AUC-BGQ-T2
3.8 V±2.0 %
S-818A38AMC-BGS-T2
S-818A38AUC-BGS-T2
4.0 V±2.0 %
S-818A40AMC-BGU-T2
S-818A40AUC-BGU-T2
5.0 V±2.0 %
S-818A50AMC-BHE-T2
S-818A50AUC-BHE-T2
S-818A60AUC-BHO-T2
6.0 V±2.0 %
Remark
Please contact the SII marketing department for products with an output voltage over than
those specified above.
Package
*3
Seiko Instruments Inc.
3
LOW DROPOUT CMOS VOLTAGE REGULATOR
S-818 Series
Pin Configurations
SOT-23-5
Top view
5
4
Table 2
Rev.1.3
_10
1
2
Figure 2
3
Pin No.
Symbol
Pin description
1
VIN
Input voltage pin
2
VSS
GND pin
3
ON/OFF
Shutdown pin
*1
NC
4
No connection
5
VOUT
Output voltage pin
*1.
The NC pin is electrically open.
The NC pin can be connected to VIN or VSS.
SOT-89-5
Top view
5
4
Table 3
Pin No.
Symbol
Pin description
1
VOUT
Output voltage pin
2
VSS
GND pin
*1
NC
3
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
V
Input voltage
V
IN
V
SS
−0.3
to V
SS
+12
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 ambient 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.
4
Seiko Instruments Inc.
Rev.1.3
_10
Electrical Characteristics
LOW DROPOUT CMOS VOLTAGE REGULATOR
S-818 Series
Table 5
Parameter
Output voltage
Output current
*1
Symbol
V
OUT(E)
I
OUT
*2
Dropout voltage
*3
V
drop
Line regulation 1
Line regulation 2
Load regulation
Output voltage
*4
temperature coefficient
Current consumption
at operation
Current consumption
at shutdown
Input voltage
Shutdown pin
input voltage "H"
Shutdown pin
input voltage "L"
Shutdown pin
input current "H"
Shutdown pin
input current "L"
Ripple rejection
∆
V
OUT1
∆
V
IN
•
V
OUT
∆
V
OUT 2
∆
V
IN
•
V
OUT
∆V
OUT3
∆
V
OUT
∆
Ta
•
V
OUT
I
SS1
I
SS2
V
IN
V
SH
V
SL
I
SH
I
SL
(Ta=25°C unless otherwise specified)
Test
Conditions
Min.
Typ.
Max. Unit
circuit
V
OUT(S)
V
OUT(S)
V
OUT(S)
V
1
V
IN
=V
OUT(S)
+1
V, I
OUT
=30
mA
×0.98
×1.02
*5
mA 3
V
OUT(S)
+1
V≤ 2.0 V≤V
OUT(S)
≤2.4
V 100
*5
V
IN
≤10
V
2.5 V≤V
OUT(S)
≤2.9
V 150
*5
3.0 V≤V
OUT(S)
≤3.9
V 200
*5
4.0 V≤V
OUT(S)
≤4.9
V 250
*5
5.0 V≤V
OUT(S)
≤6.0
V 300
0.51
0.87
V
1
I
OUT
=60
mA 2.0 V≤V
OUT(S)
≤2.4
V
0.38
0.61
2.5 V≤V
OUT(S)
≤2.9
V
0.30
0.44
3.0 V≤V
OUT(S)
≤3.4
V
0.24
0.33
3.5 V≤V
OUT(S)
≤3.9
V
0.20
0.26
4.0 V≤V
OUT(S)
≤4.4
V
0.18
0.22
4.5 V≤V
OUT(S)
≤4.9
V
0.17
0.21
5.0 V≤V
OUT(S)
≤5.4
V
0.17
0.20
5.5 V≤V
OUT(S)
≤6.0
V
V
OUT(S)
+0.5
V≤V
IN
≤10
V,
0.05
0.2 %/V
I
OUT
=30
mA
V
OUT(S)
+0.5
V≤V
IN
≤10
V,
I
OUT
=10 µA
V
IN
=V
OUT(S)
+1
V,
10
µA≤I
OUT
≤80
mA
V
IN
=V
OUT(S)
+1
V, I
OUT
=30 mA,
−40°C≤Ta≤85°C
V
IN
=V
OUT(S)
+1
V,
ON/OFF pin=ON, no load
V
IN
=V
OUT(S)
+1
V,
ON/OFF pin=OFF, no load
V
IN
=V
OUT(S)
+1
V, R
L
=1
kΩ,
Judged by V
OUT
output level.
V
IN
=V
OUT(S)
+1
V, R
L
=1
kΩ,
Judged by V
OUT
output level.
V
IN
=V
OUT(S)
+1
V, V
ON/OFF
=7
V
V
IN
=V
OUT(S)
+1
V, V
ON/OFF
=0
V
V
IN
=V
OUT(S)
+1
V, f=100 Hz,
∆V
rip
=0.5
V p-p, I
OUT
=30
mA
1.5
−0.1
−0.1
0.05
30
±100
30
0.1
45
0.2
50
40
0.5
10
0.3
0.1
0.1
dB
5
µA
V
1
4
mV
ppm
/°C
µA
2
RR
Seiko Instruments Inc.
5
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