### INTEGRAL IL1085

```IL1085
IC of adjustable voltage regulator of positive polarity with low
residual voltage and load current 3 А
IC IL1084 is a powerful adjustable voltage
regulator of positive polarity with low residual
voltage and load current 3,2 А.
IC of powerful adjustable voltage regulator
with low residual voltage lower than 1,5A and
reference voltage 1,25 V is purposed for producing 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.
TO-220
1
2
3
Вывод 1. Регулировка
2. Выход
3. Вход
Properties:
• Reference voltage 1,25V
• Output current up to 3,2 A
• Input-output voltage difference, UIN - UO up to 30 V
• Residual voltage lower than 1,5 V
• Embedded temperature protection
• Operation range of chip temperature from 0 up to +125°С.
Table 1 – Description of regulator IC pins in 3-pin package ТО-220
Pin No.
Description
Name
01
02
Output
Output
03
Input
Input
1
IL1085
D1
UIN
Input
Output
IL1085
03
01
Cin
UO
02
R1
Co
R2
С1, С2 – smoothing capacitors, C1=10 mkF, С2=100 mkF (Ta),
D1 - IC
R1, R2 - resistors, R1=121 Ом ± 1%, R2 – adjusted with accuracy 1%.
Output voltage Uo, V, is defined by formula::
U
O
= U
ref
(1 +
R2
) + I Adj R 2 ,
R1
Where U ref - reference voltage, V,
Since IADJ 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 − ТABLE OF ELECTRICAL CHARACTERISTICS
2
IL1085
Characteristic, measurement unit
Reference voltage, V
Change of output voltage when
input voltage changes, %
Symbol
Uref
Regline
IO=10мA
(UIN - UO)=3В
10мА ≤ IO ≤ I FULL LOAD
1,5В ≤(UIN - UO) ≤ 25В
IO=10 мА,
1,5В ≤(UIN - UO) ≤ 15В
IO=10 мА,
Change of output voltage when
Residual voltage, V
Measurement mode
15В ≤(UIN - UO) ≤ 30В
(UIN - UO) = 3В
10мА ≤ IO ≤ I FULL LOAD
Maximum output current, A
Uds
Minimum output current, mA
Thermostabilization, %/W
Pulsation smoothing ratio, dB
Ratio of output voltage temporary
instability, %
Characteristic, measurement unit
∆Uref = 1 %, IO= I FULL LOAD
(UIN - UO) = 5В
(UIN - UO) = 25В
(UIN - UO) = 25В
IO min
Regterm tимпульс=30мсTА=25OC
RR
СО=25 мкФ (тантал),
IO=I FULL LOAD, (UIN - UO)=3В
10мА ≤ IO ≤ I FULL LOAD
1,5В ≤(UIN - UO) ≤ 25В
10мА ≤ IO ≤ I FULL LOAD
1,5В ≤(UIN - UO) ≤ 25В
S
1000 ч ;TJ = 125 OC
(при испытаниях)
IO max
Standard
Temperature
TJ, OC
min
Max
1,238
1,262
25±10
1,225
1,270
0÷125
-
0,2
0÷125
-
0,5
0÷125
-
0,3
25±10
-
0,4
1,5
0÷125
0÷125
3,2
0,2
-
0÷125
0÷125
0÷125
60
10
0,020
-
-
120
0÷125
-
5
0÷125
-
1
25±10
0÷125
Notes:
1 Measurement of electrical characteristics is carried out when capacitance СIN=10 mkF is
connected to the input and СО=100 mkF – to the output;
2 Reference voltage Uref in adjustable regulator is measured between outputs Output and
Adjust on resistance R1 (figure 1);
3 Parameters stipulated in table 1 are ensured for constant chip temperature TJ. Measurement of parameters should be performed using heatsink and pulse technique;
4 I FULL LOAD – value of maximum output current dependent on input-output voltage difference (UIN - UO) with power dissipation in package КТ-28 - 30 W.
Table 3 − Typical values of electrical characteristics
3
IL1085
Characteristic,
Measurement unit
Symbol
.
Temperature ratio of output voltage
instability, %
Noise voltage on output, (% )
TS
Un rms
Measurement
mode
Typical
value
TJ = 25 OC
TJ = 0÷125 OC
55
0,5
TJ = 25 OC
10 Гц ≤ f ≤10 кГц
0,003
Table 4 − Table of maximum and absolute maximum ratings
Parameter
Input-output voltage difference, UIN - UO
Chip temperature, ТJ
Storage temperature, Тstg
Measurement
unit
V
C
O
C
O
4
Maximum ratings
Absolute maximum ratings
min
max
min
max
2,77
0
30
125
0
-65
-65
31
150
150
```