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POWER SUPPLY ICs

HIGH RIPPLE REJECTION AND

LOW DROPOUT VOLTAGE REGULATOR

The S-1111/1121 series is a positive voltage regulator that

features low dropout voltage, high output voltage accuracy,

and low current consumption, and has been developed using

CMOS technology. Since a low on-resistance transistor is

incorporated, the dropout voltage is small, and a large output

current can be obtained. A built-in overcurrent protection cir-

cuit prevents the load current from exceeding the current

capacitance of the output transistor. Moreover, the battery

life can be extended by using the power-on/off circuit. Small

SOT-23-5 and 5-pin SON(A) packages realize high-density

mounting. The lineup includes the S-1111 and S-1121 se-

ries, which differ in pin configuration.

S-1111/1121 series

FEATURES

• Low current consumption

µA

typ., 65

µA

max. (during operation)

0.1

µA

typ., 1

µA

max. (during power-off)

• Output voltage: 1.5 to 5.5 V (selectable in 0.1 V steps)

• Output voltage accuracy:

±1.0%

• Output current

150 mA capable (product with 3.0 V output, when V

= 4 V)

• Dropout voltage

200 mV typ. (product with 3.0 V output, when I

OUT

= 100 mA)

• Ripple rejection rate: 70 dB typ. (f = 1 kHz, V

OUT

= 3 V)

• Built-in power-off circuit: Selection of positive/negative logic

is possible.

• Built-in overcurrent protection circuit

PIN CONFIGURATIONS

APPLICATIONS

SOT-23-5 Top view

S-1111

VIN

VSS

ON/OFF

VOUT

S-1121

VOUT

VSS

VIN

ON/OFF

5-pin SON(A) Top view

S-1111

ON/OFF

VSS

VIN

VOUT

S-1121

VOUT

VSS

ON/OFF

VIN

•

Constant voltage power supply for battery-powered devices

Constant voltage power supply for communication devices

Constant voltage power supply for household electrical appliances

Constant voltage power supply for cellular phones

SELECTION GUIDE

Output voltage

1.5V

1.0%

1.6V

1.0%

1.7V

1.0%

1.8V

1.0%

1.9V

1.0%

2.0V

1.0%

2.1V

1.0%

2.2V

1.0%

2.3V

1.0%

2.4V

1.0%

2.5V

1.0%

2.6V

1.0%

2.7V

1.0%

2.8V

1.0%

2.9V

1.0%

3.0V

1.0%

3.1V

1.0%

3.2V

1.0%

3.3V

1.0%

3.4V

1.0%

3.5V

1.0%

3.6V

1.0%

3.7V

1.0%

3.8V

1.0%

3.9V

1.0%

4.0V

1.0%

4.1V

1.0%

4.2V

1.0%

4.3V

1.0%

4.4V

1.0%

4.5V

1.0%

4.6V

1.0%

4.7V

1.0%

4.75V

1.0%

4.8V

1.0%

4.9V

1.0%

5.0V

1.0%

5.1V

1.0%

5.2V

1.0%

5.3V

1.0%

5.4V

1.0%

5.5V

1.0%

S-1111 series

SOT-23-5

5-pin SON(A)

(3000/reel)

S-1111B15MC-NYA-TF S-1111B15PN-NYA-TF

S-1111B16MC-NYB-TF S-1111B16PN-NYB-TF

S-1111B17MC-NYC-TF S-1111B17PN-NYC-TF

S-1111B18MC-NYD-TF S-1111B18PN-NYD-TF

S-1111B19MC-NYE-TF S-1111B19PN-NYE-TF

S-1111B20MC-NYF-TF S-1111B20PN-NYF-TF

S-1111B21MC-NYG-TF S-1111B21PN-NYG-TF

S-1111B22MC-NYH-TF S-1111B22PN-NYH-TF

S-1111B23MC-NYI-TF

S-1111B23PN-NYI-TF

S-1111B24MC-NYJ-TF S-1111B24PN-NYJ-TF

S-1111B25MC-NYK-TF S-1111B25PN-NYK-TF

S-1111B26MC-NYL-TF S-1111B26PN-NYL-TF

S-1111B27MC-NYM-TF S-1111B27PN-NYM-TF

S-1111B28MC-NYN-TF S-1111B28PN-NYN-TF

S-1111B29MC-NYO-TF S-1111B29PN-NYO-TF

S-1111B30MC-NYP-TF S-1111B30PN-NYP-TF

S-1111B31MC-NYQ-TF S-1111B31PN-NYQ-TF

S-1111B32MC-NYR-TF S-1111B32PN-NYR-TF

S-1111B33MC-NYS-TF S-1111B33PN-NYS-TF

S-1111B34MC-NYT-TF

S-1111B34PN-NYT-TF

S-1111B35MC-NYU-TF S-1111B35PN-NYU-TF

S-1111B36MC-NYV-TF S-1111B36PN-NYV-TF

S-1111B37MC-NYW-TF S-1111B37PN-NYW-TF

S-1111B38MC-NYX-TF S-1111B38PN-NYX-TF

S-1111B39MC-NYY-TF S-1111B39PN-NYY-TF

S-1111B40MC-NYZ-TF S-1111B40PN-NYZ-TF

S-1111B41MC-NZA-TF S-1111B41PN-NZA-TF

S-1111B42MC-NZB-TF S-1111B42PN-NZB-TF

S-1111B43MC-NZC-TF S-1111B43PN-NZC-TF

S-1111B44MC-NZD-TF S-1111B44PN-NZD-TF

S-1111B45MC-NZE-TF S-1111B45PN-NZE-TF

S-1111B46MC-NZF-TF S-1111B46PN-NZF-TF

S-1111B47MC-NZG-TF S-1111B47PN-NZG-TF

S-1111B48MC-NZH-TF S-1111B48PN-NZH-TF

S-1111B49MC-NZI-TF

S-1111B49PN-NZI-TF

S-1111B50MC-NZJ-TF

S-1111B50PN-NZJ-TF

S-1111B51MC-NZK-TF S-1111B51PN-NZK-TF

S-1111B52MC-NZL-TF S-1111B52PN-NZL-TF

S-1111B53MC-NZM-TF S-1111B53PN-NZM-TF

S-1111B54MC-NZN-TF S-1111B54PN-NZN-TF

S-1111B55MC-NZO-TF S-1111B55PN-NZO-TF

S-1121 series

SOT-23-5

5-pin SON(A)

(3000/reel)

S-1121B15MC-N2A-TF S-1121B15PN-N2A-TF

S-1121B16MC-N2B-TF S-1121B16PN-N2B-TF

S-1121B17MC-N2C-TF S-1121B17PN-N2C-TF

S-1121B18MC-N2D-TF S-1121B18PN-N2D-TF

S-1121B19MC-N2E-TF S-1121B19PN-N2E-TF

S-1121B20MC-N2F-TF S-1121B20PN-N2F-TF

S-1121B21MC-N2G-TF S-1121B21PN-N2G-TF

S-1121B22MC-N2H-TF S-1121B22PN-N2H-TF

S-1121B23MC-N2I-TF

S-1121B23PN-N2I-TF

S-1121B24MC-N2J-TF

S-1121B24PN-N2J-TF

S-1121B25MC-N2K-TF S-1121B25PN-N2K-TF

S-1121B26MC-N2L-TF

S-1121B26PN-N2L-TF

S-1121B27MC-N2M-TF S-1121B27PN-N2M-TF

S-1121B28MC-N2N-TF S-1121B28PN-N2N-TF

S-1121B29MC-N2O-TF S-1121B29PN-N2O-TF

S-1121B30MC-N2P-TF S-1121B30PN-N2P-TF

S-1121B31MC-N2Q-TF S-1121B31PN-N2Q-TF

S-1121B32MC-N2R-TF S-1121B32PN-N2R-TF

S-1121B33MC-N2S-TF S-1121B33PN-N2S-TF

S-1121B34MC-N2T-TF

S-1121B34PN-N2T-TF

S-1121B35MC-N2U-TF S-1121B35PN-N2U-TF

S-1121B36MC-N2V-TF

S-1121B36PN-N2V-TF

S-1121B37MC-N2W-TF S-1121B37PN-N2W-TF

S-1121B38MC-N2X-TF S-1121B38PN-N2X-TF

S-1121B39MC-N2Y-TF

S-1121B39PN-N2Y-TF

S-1121B40MC-N2Z-TF S-1121B40PN-N2Z-TF

S-1121B41MC-N3A-TF S-1121B41PN-N3A-TF

S-1121B42MC-N3B-TF S-1121B42PN-N3B-TF

S-1121B43MC-N3C-TF S-1121B43PN-N3C-TF

S-1121B44MC-N3D-TF S-1121B44PN-N3D-TF

S-1121B45MC-N3E-TF S-1121B45PN-N3E-TF

S-1121B46MC-N3F-TF S-1121B46PN-N3F-TF

S-1121B47MC-N3G-TF S-1121B47PN-N3G-TF

S-1121B4HMC-N3P-TF

S-1121B48MC-N3H-TF S-1121B48PN-N3H-TF

S-1121B49MC-N3I-TF

S-1121B49PN-N3I-TF

S-1121B50MC-N3J-TF

S-1121B50PN-N3J-TF

S-1121B51MC-N3K-TF S-1121B51PN-N3K-TF

S-1121B52MC-N3L-TF

S-1121B52PN-N3L-TF

S-1121B53MC-N3M-TF S-1121B53PN-N3M-TF

S-1121B54MC-N3N-TF S-1121B54PN-N3N-TF

S-1121B55MC-N3O-TF S-1121B55PN-N3O-TF

Dropout voltage

(typ.)

OUT

=100mA)

0.60V

0.35V

0.24V

0.20V

0.17V

Output current

(min.)

≥V

OUT(S)

+1.0V)

150mA

Current consumption

during operation (typ.)

OUT(S)

+1.0V, no load)

35µA

Remark

Please contact our sales office if you desire a product with an inverted ON/OFF pin logic.