S-L2980_1 Datasheet, PDF (10/23 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR

HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-L2980 Series
Rev.4.1_00
( ) 7. Temperature Coefficient of Output Voltage ΔVOUT
ΔTa • VOUT
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.
V_OUT
[V]
Example of S-L2980A28 Typ. product
+0.28 mV / °C
V_OUT(E)^*1
−0.28 mV / °C
−40
25
85
Ta [°C]
*1. 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.
[ ] [ ] [ ] ^ΔVOUT mV/°C ^*1 = VOUT(S) V ^*2 × ^ΔVOUT ppm/°C ^*3 ÷ 1000
ΔTa
ΔTa • VOUT
*1. Temperature change ratio of the output voltage
*2. Specified output voltage
*3. Output voltage temperature coefficient
10
Seiko Instruments Inc.