ITT - Index of

TAA780
1.tV STABILIZING CIRCUIT
CHARACTERISTICS at Tamb=25°C
Sf} 3 DC current gain of transistor T,
at V'I,,=1.5V, 1,=0.3mA,
1,=0 .................. 250(>120)
V'",at Collector saturation voltage at
transistor T1 at 1,=3.5mA,
1,=35fLA, 14=0 .......... 0.1«0.12)
Vl/osat Sase saturation voltage of
transistor T1 at 1,=3.5mA,
1,=35fLA, 14=0 ................ 0.7V
R1 +R2 Total resistance of voltage
divider ................ 15(>10)kn
V3/, Stabil ized voltage
at V'I,=1.5V, 1,=250fLA,
1,,=3.5mA ............... 1.1±0.06
SV3/4 Voltage stabilization coefficient
at V'/4=1.3 to 1.7V, 1,= 250fLA,
b=3.5mA .............. 1.1 ±0.06V
Temperature coefficient of
the stabilized voltage
at V'/4 = 1.5V, 1,= 250 fLA,
b=3.5mA ...... -2.8 X 10- 3 1i"C
hr. Small signal current gain of
transistor T1 at V'I,,=1.5V,
1,=0.3mA, 1,=0 ............... 250
mV
10
0
4V3/4
!->C
TAA 780
mV
100
80
o
-20
-40
-60
-80
-100
10 20
TAA 780
/
V
J
L
V
-'-
V
I '2/4 = 1,5 V
13 =3,5mA -
~ = 25°C '---
I
50 100 200 500 1000 llA
.. 1/
Variation of output voltage V3/4 versus current
I, referred to 1,= 250fLA, V3/4 =1.1V
mV
140
120
1\
\
I\.
TAA 780
I I
12t4 = 1,5 V
1/ =250 llA -
13=3,5mA _
-20
-30
40
20
o
\
f\
\
~
~
\
~
-40
-50
1/ = 250 ~A
13=3,5 mA -
~=25°C
J 1 1
1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 V
.. '2..z
Variation of output voltage V"I" versus input
voltage V'I" referred to V'i4 = 1.5V, V"I' = 1.1 V
_
-20
-40
-60
-20 -10
o 10· 20 30 40°C
--""'''.1A
Variation of output voltage V 3/, versus ambient
temperature referred to Tamb=25°C, V"/4=1.1V
8-96