LOW DROPOUT CMOS VOLTAGE REGULATOR

S-818 Series

Seiko Instruments Inc.

11

4. Load regulation (

Load regulation indicates the output current dependence of output voltage. The value shows how much

the output voltage changes due to the change of the output current when the input voltage is kept

constant.

and the resultant output voltage defined as following equation.

6. Temperature coefficient of output voltage













OUT

V

∆Ta

∆V

The output voltage lies in the shaded area in the whole operating temperature shown in Figure 11 when

the temperature coefficient of the output voltage is

±100 ppm/°C.

−40

25

+0.28mV/°C

*1

85

Ta [

°C]

−0.28mV/°C

*1.

The value of the output voltage measured at 25

°C.

Figure 11 Temperature coefficient of output voltage (Ex. Typ. product for S-818A28A)

Temperature change ratio for output voltage [mV/°C] is calculated by using the following equation.

[]

[ ]

C

ppm/

V

Ta

∆

V

∆

V

V

C

mV/

Ta

∆

V

∆

OUT

OUT

OUT(S)

OUT

÷

°

•

×

=

°

3

*

2

*

*1

*1.

Temperature change ratio for output voltage

*2.

Specified output voltage

*3.

Output voltage temperature coefficient