S-1111 Datasheet, PDF (13/25 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION LOW DROPOUT

HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.4.1_00
S-1111/1121 Series
6.
Temperatur
e
coefficien
t
of
output
voltage
⎜⎜⎝⎛
Δ V OUT
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.
Ex. S-1111/1121B28 Typ.
V_OUT
[V]
+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 25°C.
Figure 10
A change in the temperature of the output voltage [mV/°C] is calculated using the following equation.
[ ] [ ] [ ] ^ΔVOUT mV/°C ^*1 = VOUT(S) V ^*2 × ^ΔVOUT ppm/°C ^*3 ÷ 1000
ΔTa
ΔTa • VOUT
*1. Change in temperature of output voltage
*2. Specified output voltage
*3. Output voltage temperature coefficient
Seiko Instruments Inc.
13