HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-L2980 Series
Rev.4.1
_00
7. Temperature Coefficient of Output Voltage
ΔV
OUT
ΔTa
•
V
OUT
The shadowed area in
Figure 10
is the range where V
OUT
varies in the operating temperature range
when the temperature coefficient of the output voltage is
±
100 ppm/
°
C.
Example of S-L2980A28 Typ. product
V
OUT
[V]
(
)
+0.28
mV /
°C
V
OUT(E)
*1
−0.28
mV /
°C
−40
*1.
25
85
Ta [°C]
V
OUT(E)
is a mesured value of output voltage at 25
°C.
Figure 10
Temperature change ratio in the output voltage [mV/°C] is calculated by using the following equation.
ΔV
OUT
[
mV/
°
C
]
*1
=
V
OUT(S)
[
V
]
*2
×
ΔV
OUT
[
ppm/
°
C
]
*3
÷
1000
ΔTa
ΔTa
•
V
OU
T
*1.
Temperature change ratio of the output voltage
*2.
Specified output voltage
*3.
Output voltage temperature coefficient
10
Seiko Instruments Inc.
SII [ SEIKO INSTRUMENTS INC ]
