IL1085
1
IC of adjustable voltage regulator of positive polarity with low
residual voltage and load current 3 Рђ
IC IL1084 is a powerful adjustable voltage
regulator of positive polarity with low residual
voltage and load current 3,2 Рђ.
IC of powerful adjustable voltage regulator
with low residual voltage lower than 1,5A and
reference voltage 1,25 V is purposed for produc-
ing constant temperature-stabilized voltage of
positive polarity by means of the value set by
external resistive divider and used in electronic
equipment as a source of stabilized supply.
Properties:
С› Reference voltage 1,25V
С› Output current up to 3,2 A
С› Input-output voltage difference, U
IN
- U
O
up to 30 V
С› Residual voltage lower than 1,5 V
С› Overload protection
С› Embedded temperature protection
С› Operation range of chip temperature from 0 up to +125СљРЎ.
Table 1 - Description of regulator IC pins in 3-pin package РўРћ-220
Pin No.
Description
Name
01 Adjustment
Adjust
02 Output
Output
03 Input
Input
Вывод 1. Регулировка
2. Выход
3. Р’С…РѕРґ
TO-220
3
2
1
IL1085
2
РЎ1, РЎ2 - smoothing capacitors, C1=10 mkF, РЎ2=100 mkF (Ta),
D1 - IC
R1, R2 - resistors, R1=121 РћРј
1%, R2 - adjusted with accuracy 1%.
Output
voltage
U
o
, V, is defined by formula::
U
U
R
R
I
R
O
r e f
A d j
=
+
+
(
)
1
2
1
2
,
Where
U
ref
- reference voltage, V,
I
Adj
- adjustment current, mkA.
Since I
ADJ
has values not more than 120 mkA, inaccuracy dependent on this
value for Uo - is minor..
Figure 1 - Connection circuit of adjustable voltage regulator
TABLE 2
- РўABLE OF ELECTRICAL CHARACTERISTICS
U
O
Input
U
IN
Output
IL1085
D1
R2
R1
03
02
01
Co
Cin
Adjust
I
Adj
PDF 
ZIP