S-1111/1121 Series
www.sii-ic.com
© Seiko Instruments Inc., 2002-2015
HIGH RIPPLE-REJECTION LOW DROPOUT
CMOS VOLTAGE REGULATOR
The S-1111/1121 Series is a positive voltage regulator with a low dropout voltage, high-accuracy output
voltage, 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 protection circuit prevents the load current from exceeding the current capacity of the output
transistor. An ON/OFF circuit ensures a long battery life, and small SOT-23-5 package realize high-density
mounting. The lineup includes the S-1111 and S-1121 Series, which differ in pin configuration.
•
Output voltage:
•
Output voltage accuracy:
•
Dropout voltage:
•
Current consumption:
•
Output current:
•
Ripple rejection:
•
Built-in overcurrent protection circuit:
•
Built-in ON/OFF circuit:
•
Operation temperature range:
•
Lead-free, Sn 100%, halogen-free
*2
1.5 V to 5.5 V, selectable in 0.1 V step
±1.0%
200 mV typ. (3.0 V output product, I
OUT
= 100 mA)
During operation: 35
μA
typ., 65
μA
max.
During power-off: 0.1
μA
typ., 1.0
μA
max.
Possible to output 150 mA (V
IN
≥
V
OUT(S)
+
1.0 V)
*1
70 dB typ. (f = 1.0 kHz)
Limits overcurrent of output transistor.
Ensures long battery life.
Ta =
−40°C
to
+85°C
Package
•
SOT-23-5
NO
T
RE
CO
MM
•
Power supply for battery-powered device
•
Power supply for personal communication device
•
Power supply for home electric/electronic appliance
•
Power supply for cellular phone
EN
Applications
DE
*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.
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Features
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Seiko Instruments Inc.
Rev.5.1
_00
1
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.5.1
_00
S-1111/1121 Series
Block Diagram
*1
VIN
Overcurrent
protection circuit
Reference
voltage circuit
VSS
*1.
Parasitic diode
2
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EN
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Seiko Instruments Inc.
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Figure 1
FO
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ON/OFF
ON/OFF
circuit
+
−
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VOUT
Rev.5.1
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1111/1121 Series
Product Name Structure
1.
Product name
(1)
S-1111
Series
S-1111
x
xx
MC
-
xxx
TF
x
IC direction in tape specifications
*1
Product code
*2
*1.
Refer to the tape drawing.
*2.
Refer to “3.
Product name list”.
*3.
Refer to “3.
ON/OFF pin”
in “
Operation”.
NO
T
RE
CO
MM
EN
DE
D
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
FO
R
Package code
MC: SOT-23-5
NE
W
Environmental code
U:
Lead-free (Sn 100%), halogen-free
G: Lead-free (for details, please contact our sales office)
DE
SI
G
N
•
Users can select the product type, output voltage for the S-1111/1121 Series. Refer to “1.
Product
name”
regarding the contents of product name, “2.
Package”
regarding the package drawings, “3.
Product name list”
regarding details of product name.
Seiko Instruments Inc.
3
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.5.1
_00
S-1111/1121 Series
(2)
S-1121
Series
S-1121
x
xx
MC
-
xxx
TF
x
IC direction in tape specifications
*1
Product code
*2
Package code
MC: SOT-23-5
Output voltage
15 to 55
(e.g., when the output voltage is 1.5 V, it is expressed
as 15.)
2.
Package
Package Name
EN
DE
D
*1.
Refer to the tape drawing.
*2.
Refer to “3.
Product name list”.
*3.
Refer to “3.
ON/OFF pin”
in “
Operation”.
4
NO
T
RE
CO
MM
SOT-23-5
Package
MP005-A-P-SD
FO
R
Product type
*3
A: ON/OFF pin negative logic
B: ON/OFF pin positive logic
Drawing Code
Tape
MP005-A-C-SD
NE
W
Seiko Instruments Inc.
DE
SI
G
Environmental code
U: Lead-free (Sn 100%), halogen-free
G: Lead-free (for details, please contact our sales office)
Reel
MP005-A-R-SD
N
Rev.5.1
_00
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1111/1121 Series
3.
Product name list
Output Voltage
SOT-23-5
1.5V±1.0%
S-1111B15MC-NYATFx
1.6V±1.0%
S-1111B16MC-NYBTFx
1.7V±1.0%
S-1111B17MC-NYCTFx
1.8V±1.0%
S-1111B18MC-NYDTFx
1.9V±1.0%
S-1111B19MC-NYETFx
2.0V±1.0%
S-1111B20MC-NYFTFx
2.1V±1.0%
S-1111B21MC-NYGTFx
2.2V±1.0%
S-1111B22MC-NYHTFx
2.3V±1.0%
S-1111B23MC-NYITFx
2.4V±1.0%
S-1111B24MC-NYJTFx
2.5V±1.0%
S-1111B25MC-NYKTFx
2.6V±1.0%
S-1111B26MC-NYLTFx
2.7V±1.0%
S-1111B27MC-NYMTFx
2.8V±1.0%
S-1111B28MC-NYNTFx
2.9V±1.0%
S-1111B29MC-NYOTFx
3.0V±1.0%
S-1111B30MC-NYPTFx
3.1V±1.0%
S-1111B31MC-NYQTFx
3.2V±1.0%
S-1111B32MC-NYRTFx
3.3V±1.0%
S-1111B33MC-NYSTFx
3.4V±1.0%
S-1111B34MC-NYTTFx
3.5V±1.0%
S-1111B35MC-NYUTFx
3.6V±1.0%
S-1111B36MC-NYVTFx
3.7V±1.0%
S-1111B37MC-NYWTFx
3.8V±1.0%
S-1111B38MC-NYXTFx
3.9V±1.0%
S-1111B39MC-NYYTFx
4.0V±1.0%
S-1111B40MC-NYZTFx
4.1V±1.0%
S-1111B41MC-NZATFx
4.2V±1.0%
S-1111B42MC-NZBTFx
4.3V±1.0%
S-1111B43MC-NZCTFx
4.4V±1.0%
S-1111B44MC-NZDTFx
4.5V±1.0%
S-1111B45MC-NZETFx
4.6V±1.0%
S-1111B46MC-NZFTFx
4.7V±1.0%
S-1111B47MC-NZGTFx
－
4.75V±1.0%
4.8V±1.0%
S-1111B48MC-NZHTFx
4.9V±1.0%
S-1111B49MC-NZITFx
5.0V±1.0%
S-1111B50MC-NZJTFx
5.1V±1.0%
S-1111B51MC-NZKTFx
5.2V±1.0%
S-1111B52MC-NZLTFx
5.3V±1.0%
S-1111B53MC-NZMTFx
5.4V±1.0%
S-1111B54MC-NZNTFx
5.5V±1.0%
S-1111B55MC-NZOTFx
Remark 1.
Please contact our sales office for type A products.
2.
x: G or U
3.
Please select products of environmental code = U for Sn 100%, halogen-free products.
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Table 1
N
5
(1)
S-1111 Series
Seiko Instruments Inc.
