S1165 datasheet(10/23 Pages) SII

10 / 23 page

HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR

S-1165 Series

Rev.4.1_00

Seiko Instruments Inc.



Explanation of Terms

1. Low dropout voltage regulator

This voltage regulator has the low dropout voltage due to its built-in low on-resistance transistor.

2. Output voltage (VOUT)

The accuracy of the output voltage is ensured at

±1.0% under the specified conditions of fixed input

voltage

*1, fixed output current, and fixed temperature.

*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. Refer to " Electrical Characteristics" and "

Characteristics (Typical Data)" for details.

3. Line regulation 







ΔVOUT1

ΔVIN • VOUT

Indicates the dependency of the output voltage on the input voltage. That is, the value shows how

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

unchanged.

4. Load regulation (

ΔVOUT2)

Indicates the dependency of the output voltage on the output current. That is, the value shows how

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

unchanged.

5. Dropout voltage (Vdrop)

Indicates the difference between input voltage (VIN1) and the output voltage when; decreasing input

voltage (VIN) gradually until the output voltage has dropped out to the value of 98% of output voltage

(VOUT3), which is at VIN = VOUT(S)

+ 1.0 V.

Vdrop

= VIN1 − (VOUT3 × 0.98)

S1165 Datasheet(PDF) 10 Page - Seiko Instruments Inc