S-1111/1121 Series
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© Seiko Instruments Inc., 2002-2010
HIGH RIPPLE-REJECTION LOW DROPOUT
CMOS VOLTAGE REGULATOR
Rev.5.0
_00
The S-1111/1121 Series is a positive voltage regulator with a low dropout voltage, high output voltage
accuracy, 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 protector prevents the load current from exceeding the current capacitance of the output
transistor. An ON/OFF circuit ensures a long battery life, and a small SOT-23-5 package realize high-
density mounting. The lineup includes the S-1111 and S-1121 Series, which differ in pin configuration.
Features
•
Output voltage:
•
High-accuracy output voltage:
•
Low dropout voltage:
•
Low current consumption:
1.5 V to 5.5 V, selectable in 0.1 V steps.
±1.0%
200 mV typ. (3.0 V output product, I
OUT
=
100 mA)
During operation: 35
μA
typ., 65
μA
max.
During shutdown: 0.1
μA
typ., 1.0
μA
max.
•
High peak current capability: 150 mA output is possible (at V
IN
≥
V
OUT(S)
+
1.0 V)
*1
Ensures long battery life.
•
Built-in ON/OFF circuit:
70 dB typ. (at 1.0 kHz)
•
High ripple rejection:
•
Built-in overcurrent protector: Overcurrent of output transistor can be restricted.
•
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 supply for battery-powered devices
•
Power supply for personal communication devices
•
Power supply for home electric/electronic appliances
•
Power supply for cellular phones
Package
•
SOT-23-5
Seiko Instruments Inc.
1
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.5.0
_00
S-1111/1121 Series
Block Diagram
*1
VIN
VOUT
Overcurrent
protector
ON/OFF
ON/OFF
circuit
+
−
Reference
voltage circuit
VSS
*1.
Parasitic diode
Figure 1
2
Seiko Instruments Inc.
Rev.5.0
_00
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1111/1121 Series
Product Name Structure
•
The product types and output voltage for the S-1111/1121 Series can be selected at the user’s request.
Refer to the “1.
Product name”
for the meanings of the characters in the product name, “2.
Package”
regarding the package drawings and “3.
Product name list”
for the full product names.
1. Product name
(1) S-1111
Series
S-1111
x
xx
MC
−
xxx
TF
x
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
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
*1.
Refer to the tape specifications at the end of this book.
*2.
Refer to the “Product
name list”.
*3.
Refer to
3. Shutdown (ON/OFF pin)
in the “Operation”.
Seiko Instruments Inc.
3
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.5.0
_00
S-1111/1121 Series
(2) S-1121
Series
S-1121
x
xx
MC
−
xxx
TF
x
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
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
*1.
Refer to the tape specifications at the end of this book.
*2.
Refer to the “Product
name list”.
*3.
Refer to
3. Shutdown (ON/OFF pin)
in the “Operation”.
2. Package
Package Name
SOT-23-5
Drawing Code
Tape
MP005-A-C-SD
Package
MP005-A-P-SD
Reel
MP005-A-R-SD
4
Seiko Instruments Inc.
Rev.5.0
_00
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1111/1121 Series
3. Product name list
(1) S-1111 Series
Table 1
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.
5
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