IL1084 IC OF ADJUSTABLE VOLTAGE REGULATOR OF POSITIVE POLARITY WITH LOW RESIDUAL VOLTAGE AND LOAD CURRENT 5A. IC IL1084 is a powerful adjustable voltage regulator of positive polarity with low residual voltage and load current 5,5A. 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 Output 1. Adjustment 2. Output 3. Input Properties: • Reference voltage 1,25V • Output current up to 5,5 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°Ñ. Table 1 – Description of regulator IC pins in 3-pin package ÒÎ-220 Pin No. Description Name 01 Adjustment Adjust 02 Output Output 03 Input Input Korzhenevskogo 12, Minsk, 220064, Republic of Belarus Fax: +375 (17) 278 28 22, Phone: +375 (17) 278 07 11, 277 24 70, 277 24 61, 277 69 16 E-mail: [email protected] URL: www.bms.by IL1084 D1 UIN Output Input IL1084 03 01 Adjust Cin UO 02 R1 IAdj Co R2 Ñ1, Ñ2 – smoothing capacitors, C1=10 mkF, Ñ2=100 mkF (Ta), D1 - IC, R1, R2 - resistors, R1=121 Îì ± 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, I Adj - 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 Korzhenevskogo 12, Minsk, 220064, Republic of Belarus Fax: +375 (17) 278 28 22, Phone: +375 (17) 278 07 11, 277 24 70, 277 24 61, 277 69 16 E-mail: [email protected] URL: www.bms.by IL1084 TABLE 2 − ÒABLE OF ELECTRICAL CHARACTERISTICS Characteristic, measurement unit Reference voltage, V Change of output voltage when input voltage changes, % Change of output voltage when load current changes, % Residual voltage, V Maximum output current, A Minimum output current, mA Thermostabilization, %/W Pulsation smoothing ratio, dB Adjustment current, mkA Change of adjustment current, mkA Ratio of output voltage temporary instability, % Symbol Uref Regline Regload Uds IO max IO min Regterm RR IAdj ∆IAdj S Measurement mode min Max IO=10ìA (UIN - UO)=3V 10mA≤ IO ≤ I FULL LOAD 1,5V ≤(UIN - UO) ≤ 25V IO=10 mA, 1,5V ≤(UIN - UO) ≤ 15V IO=10 mA, 15V ≤(UIN - UO) ≤ 30V (UIN - UO) = 3V 10mA≤ IO ≤ 5À ∆Uref = 1 %, IO= 5À 1,238 1,262 Temperature TJ, OC 25±10 1,225 1,270 0÷125 - 0,2 0÷125 - 0,5 0÷125 - 0,3 0,4 1,5 25±10 0÷125 0÷125 (UIN - UO) = 5V (UIN - UO) = 25V (UIN - UO) = 25V Tpal=30ms TÀ=25OC f=120Ãö, ÑAdj =25mkF, ÑÎ=25 mkF (Ta), IO= 5À,(UIN - UO)=3V 5,5 0,3 - 0÷125 0÷125 0÷125 60 10 0,015 - - 120 5 0÷125 0÷125 - 1 25±10 10mA≤ IO ≤ I FULL LOAD 1,5V ≤(UIN - UO) ≤ 25V 1000 h ;TJ = 125 OC (when testing) Standard 0÷125 Notes: 1 Measurement of electrical characteristics is carried out when capacitance ÑIN=10 mkF is connected to the input and ÑÎ=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 (U IN - UO) with power dissipation in package ÊÒ-28 - 30 W. Korzhenevskogo 12, Minsk, 220064, Republic of Belarus Fax: +375 (17) 278 28 22, Phone: +375 (17) 278 07 11, 277 24 70, 277 24 61, 277 69 16 E-mail: [email protected] URL: www.bms.by IL1084 Table 3 − Typical values of electrical characteristics Characteristic, Measurement unit Adjustment current, mkA Temperature ratio of output voltage instability, % Noise voltage on output, (% ) Symbol . IAdj TS Un rms Measurement mode Typical value TJ = 25 OC TJ = 0÷125 OC 55 0,5 TJ = 25 OC 10 Ãö ≤ f ≤10 êÃö 0,003 Table 4 − Table of maximum and absolute maximum ratings Parameter Input-output voltage difference, UIN - UO Chip temperature, ÒJ Storage temperature, Òstg Measurement unit V C O C O Korzhenevskogo 12, Minsk, 220064, Republic of Belarus Fax: +375 (17) 278 28 22, Phone: +375 (17) 278 07 11, 277 24 70, 277 24 61, 277 69 16 E-mail: [email protected] URL: www.bms.by Maximum ratings Absolute maximum ratings min max min max 2,77 0 30 125 0 -65 -65 31 150 150