S1131 Datasheet, PDF (12/30 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION AND LOW DROPOUT

HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1131 Series
Rev.4.1_00
6.
Output
voltage
temperature
coefficient
⎛ ^ΔVOUT
⎝ΔTa • V_OUT
⎞
⎠
The shaded area in Figure 12 is the range where V_OUT varies in the operation temperature range when
the output voltage temperature coefficient is ±100 ppm/°C.
Example of S-1131B28 typ. product
V_OUT
[V]
+0.28 mV/°C
V_OUT(E)1^*1
−0.28 mV/°C
−40
+25
+85
Ta [°C]
*1. V_OUT(E)1 is the value of the output voltage measured at Ta = +25°C.
Figure 12
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
12
Seiko Instruments Inc.