S1172 Datasheet, PDF (13/35 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION LOW DROPOUT

Rev.2.2_01
HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1172 Series
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 ±130 ppm/°C.
V_OUT [V]
Example of S-1172B30 typ. product
+0.39 mV/°C
V_OUT(E)^*1
−0.39 mV/°C
−40
+25
+85
Ta [°C]
*1. V_OUT(E) 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 = VOUT(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