HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR

S-1112/1122 Series

12

Seiko Instruments Inc.

Explanation of Terms

1. Low dropout voltage regulator

The low dropout voltage regulator is a voltage regulator whose dropout voltage is low due to its built-in

low on-resistance transistor.

2. Low ESR

A capacitor whose ESR (Equivalent Series Resistance) is low. The S-1112/1122 Series enables use of

ESR is 10

Ω or less can be used.

The accuracy of the output voltage is ensured at

±1.0% under the specified conditions of fixed input

voltage

*1. Differs depending the product.

Caution If the above conditions change, the output voltage value may vary and exceed the

accuracy range of the output voltage. Please see the electrical characteristics and

attached characteristics data for details.

4.

V

∆V

∆V

regulation

Line

OUT

IN

OUT1













•

Indicates the dependency of the output voltage on the input voltage. That is, the values show how much

the output voltage changes due to a change in the input voltage with the output current remaining

unchanged.

5. Load regulation (

Indicates the dependency of the output voltage on the output current. That is, the values show how

much the output voltage changes due to a change in the output current with the input voltage remaining

unchanged.