S1112 Datasheet, PDF (13/30 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION AND LOW DROPOUT

HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.6.1_00
S-1112/1122 Series
7. Output voltage temperature coefficient
 ^ΔVOUT
ΔTa • V_OUT


The shaded area in Figure 11 is the range where V_OUT varies in the operation temperature range when the
output voltage temperature coefficient is ±100 ppm/°C.
V_OUT
[V]
Example of S-1112/1122B28 typ. product
+0.28 mV/°C
V_OUT(E)^*1
−0.28 mV/°C
−40
+25
+85
Ta [°C]
*1. V_OUT(E) is the value of the output voltage measured at Ta = +25°C.
Figure 11
A change in the temperature of the output voltage [mV/°C] is calculated using the following equation.
ΔV_OUT
ΔTa
[mV/°C]^*1 = V_OUT(S) [V]^*2 ×
ΔV_OUT
ΔTa • V_OUT
[ppm/°C]^*3 ÷ 1000
*1. Change in temperature of output voltage
*2. Set output voltage
*3. Output voltage temperature coefficient
Seiko Instruments Inc.
13