S-1137 Datasheet, PDF (17/47 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION LOW DROPOUT SOFT-START FUNCTION CMOS VOLTAGE REGULATOR

HIGH RIPPLE-REJECTION LOW DROPOUT SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
Rev.2.1_01
S-1137 Series
6.
Output
voltage temperature
coefficient
 ^ΔVOUT 
ΔTa • VOUT 
The shaded area in Figure 15 is the range where VOUT varies in the operation temperature range when the output
voltage temperature coefficient is ±130 ppm/°C.
V_OUT
[V]
Example of S-1137B30 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 15
A change in the temperature of the output voltage [mV/°C] is calculated using the following equation.
ΔVOUT
ΔTa
[mV/°C]^*1 = VOUT(S) [V]^*2 ×
ΔVOUT
ΔTa • VOUT
[ppm/°C]^*3 ÷ 1000
*1. Change in temperature of output voltage
*2. Set output voltage
*3. Output voltage temperature coefficient
17