ST111 datasheet(14/23 Pages) SII

14 / 23 page

HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR

S-T111 Series

Rev.3.1_00

Seiko Instruments Inc.



Characteristics (Typical Data)

(1) Output Voltage vs. Output current (when load current increases)

S-T111B15 (Ta

= 25°C)

S-T111B30 (Ta

= 25°C)

100

200

300

400

500

600

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

VIN

= 1.8 V

2.5 V

6.5 V

200

300

400

500

100

600

VIN

= 3.3 V

4.0 V

6.5 V

3.5

3.0

2.5

2.0

1.5

1.0

0.5

IOUT [mA]

S-T111B50 (Ta

= 25°C)

200

300

400

100

VIN

= 5.3 V

6.0 V

6.5 V

500

600

Remark In determining the output current, attention

should be paid to the following.

The minimum output current value

and footnote *5 in the “ Electrical

Characteristics”

The package power dissipation

IOUT [mA]

(2) Output voltage vs. Input voltage

S-T111B15 (Ta

= 25°C)

S-T111B30 (Ta

= 25°C)

1.6

1.5

1.4

1.3

1.2

1.1

1.0

IOUT

= 1 mA

30 mA

50 mA

3.5

3.0

2.5

2.0

1.5

1.0

3.1

3.0

2.9

2.8

2.7

2.6

2.5

IOUT

= 1 mA

30 mA

50 mA

5.0

4.5

4.0

3.5

3.0

2.5

VIN [V]

S-T111B50 (Ta

= 25°C)

IOUT

= 1 mA

30 mA

50 mA

5.5

5.0

4.5

4.0

3.5

3.0

2.5

7.0

6.0

5.0

4.0

3.0

2.0

VIN [V]

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