IL1085 INTEGRAL | Alldatasheet
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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 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:
- 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
- Overload protection
- 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
Вывод 1. Регулировка 2. Выход 3. Вход TO-220
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 U R R I R O re f A d j 2 , Where Uref - reference voltage, V, IAdj - adjustment current, mkA. 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 UO Input UIN Output IL1085 Co Cin Adjust IAdj
Characteristic, measurement unit Symbol Measurement mode Standard Tempera- ture TJ, OC min Max Reference voltage, V Uref IO=10мA (UIN - UO)=3В 1,238 1,262 25±10 10мА ≤ IO ≤ I FULL LOAD 1,5В ≤(UIN - UO) ≤ 25В 1,225 1,270 0÷125 Change of output voltage when input voltage changes, % Regline IO=10 мА, 0,2 0÷125 1,5В ≤(UIN - UO) ≤ 15В Change of output voltage when load current changes, % IO=10 мА, 0,5 0÷125 15В ≤(UIN - UO) ≤ 30В Residual voltage, V Regload (UIN - UO) = 3В 10мА ≤ IO ≤ I FULL LOAD 0,3 25±10 Maximum output current, A 0,4 0÷125 Uds ∆Uref = 1 %, IO= I FULL LOAD 1,5 0÷125 Minimum output current, mA IO max (UIN - UO) = 5В 3,2 0÷125 Thermostabilization, %/W (UIN - UO) = 25В 0,2 0÷125 Pulsation smoothing ratio, dB IO min (UIN - UO) = 25В 0÷125 Adjustment current, mkA Regterm tимпульс=30мсTА=25OC 0,020 Change of adjustment current, mkA RR f=120Гц, СAdj=25мкФ, СО=25 мкФ (тантал), IO=I FULL LOAD, (UIN - UO)=3В 0÷125 Ratio of output voltage temporary instability, % IAdj 10мА ≤ IO ≤ I FULL LOAD 1,5В ≤(UIN - UO) ≤ 25В 120 0÷125 Characteristic, measurement unit ∆IAdj 10мА ≤ IO ≤ I FULL LOAD 1,5В ≤(UIN - UO) ≤ 25В 0÷125 S 1000 ч ;TJ = 125 OC (при испытаниях) 25±10 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. Measure- ment of parameters should be performed using heatsink and pulse technique;
4 I FULL LOAD – value of maximum output current dependent on input-output voltage differ-
ence (UIN - UO) with power dissipation in package КТ-28 - 30 W. Table 3 − Typical values of electrical characteristics
Characteristic, Measurement unit Symbol Measurement mode Typical value Adjustment current, mkA IAdj TJ = 25 OC Temperature ratio of output voltage instability, % TS TJ = 0÷125 OC 0,5 Noise voltage on output, (% ) Un rms TJ = 25 OC 10 Гц ≤ f ≤10 кГц 0,003 Table 4 − Table of maximum and absolute maximum ratings Parameter Measure- ment unit Maximum ratings Absolute maxi- mum ratings min max min max Input-output voltage difference, UIN - UO V 2,77 Chip temperature, ТJ OC 125 -65 150 Storage temperature, Тstg OC -65 150