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| TECHNICAL DATA Low-Powered Adjustable Voltage Regulator with low drop-out voltage IC KK2931CD is an adjustable voltage regulator of positive polarity with low drop-out voltage. IC is purposed for formation of temperatureconstant voltage of the value set by external resistive divider in the range from 3 to 24 V and used in the supply of electronic equipment. * * * * * Output voltage 3-24V. Drop-out voltage not less than 0,2V at load current of 10 mA and less than 0,6V at load current of 100 mA. Internal limitation of maximum load current. Protection against overvoltage of positive and negative polarity Temperature protection Pin No. 01 02,03,06,07 04 05 08 KK2931CD SO ( MS-012AA) 8 1 2 3 4 Purpose Output Common Adjustment Disconnection output Input Name Output Ground Adjust Output Inhibit Input Table 1 - pins purpose of IC in 8-pin SO package Table 2 - Maximum and absolute maximum operation Parameter Junction temperature, J Storage temperature, stg Input voltage, UI Input voltage, UI(), 100 ms Output current, IO Resistance junction-case, RJC Resistance junction-ambient, RJA conditions Maximum mode min max -40 125 UO+0,6 26 100 25(typ.) 160(typ.) Unit C C V V mA /W /W O O Absolute maximum mode min max -60 150 -15 40 -50 60 100 25(typ.) 160(typ.) 1 KK2931CD D1 VI R1 Input 08 51 Output 01 VO R2 C1 2 1 Output Inhibit 05 KK2931CD 02,03,06,07 04 Ground IB C2 Adjust IAdj SA1 R3 1, 2 - input and output capacitance, D1 - IC, R1, R2, R3 - resistors, SA1 - switch (in position 1 - output is on, in position 2 - output is off). Output voltage is defined from formula: (1) V O = V r e f (1 + 2 2 ,5 where R3 ) + I Adj R 3 , R2 R2 x R3 , R2 + R3 where resistors R2, R3 must meet the following condition: (2) Vref - reference voltage, R2 , R3- resistors, I Adj - adjustment current Figure 1 - Connection circuit of adjustable voltage regulator 2 KK2931CD Table 3 - Electrical parameters (UI=14V, UO = 3,0V, IO = 10mA, R2 = 27 kOhm, (unless specified otherwise) Parameter, unit Reference voltage *, V Output voltage, V Output voltage versus input voltage, mV/V Output voltage versus load current, %/V Consumption current, mA Symbol Test conditions Uref UO range Regline Regload IB IO=10mA IO100mA (UO+0,6) V< UI < 26 V 5mA < IO < 100mA IO=10mA Output is off (Uth(OI)=2,5 V) f = 120 Hz IO=10mA IO=100mA UI = -15 V Output is on Output is off min 1,14 1,08 3 / 24 0,10 26 -0.3 2,5 3,25 Rate max 1,26 1,32 1,5 1,0 1,0 1,0 0.2 0.6 40 1,9 1,2 50 Temperature TJ, o C 2510 -40/125 2510 2510 2510 2510 2510 2510 2510 2510 2510 2510 2510 -40/125 2510 -40/125 2510 Pulse-smoothing ratio, %/V Drop-out voltage, V Maximum input voltage threshold, V Output voltage at negative input voltage, V Voltage threshold of disconnection output, V RR Uds Uth (OV) -UO U th (OI) Disconnection output current, mkA I th (OI) Uth (OI) = 2,5 V Notes: 1. Measurement of electrical parameters is conducted with capacitance CI =0.1mkF connected on input and C =100mkF on output. 2. *- Reference voltage in adjustable regulator is measured between outputs Output and Adjust on resistance R2 (figure 1). 3. Parameters stipulated in table 3 are guaranteed for constant junction temperature TJ. Parameters measurement should be performed using pulse equipment. Table 4 - Typical values of electrical parameters (UI =14, UO = 3,0, IO = 10, R2 = 27 , unless specified otherwise) Parameter Symbol Test Typical value Temperature unit conditions TJ, o C Output resistance, ZO IO=1,0mA, 40 2510 mOhm/V f=10Hz/100kHz Consumption current, mA IB IO = 100 mA 6,0 2510 Adjustment current, mkA IAdj 0,2 2510 Noise voltage on output, mV/V Un f=10 Hz/100 kHz; 140 2510 Temporary unstability of output S 0,4 2510 voltage, %/1000h Notes: Measurement of electrical parameters is conducted with capacitance CI =0.1mkF connected on input and C =100 mkF on output. 3 KK2931CD D SUFFIX SOIC (MS - 012AA) Dimension, mm 5 A 8 Symbol A B P MIN 4.8 3.8 1.35 0.33 0.4 1.27 5.72 0 0.1 0.19 5.8 0.25 MAX 5 4 1.75 0.51 1.27 H B C 1 G 4 C R x 45 D F -TD 0.25 (0.010) M T C M K SEATING PLANE G J F M H J K M P R 8 0.25 0.25 6.2 0.5 NOTES: 1. Dimensions A and B do not include mold flash or protrusion. 2. Maximum mold flash or protrusion 0.15 mm (0.006) per side for A; for B 0.25 mm (0.010) per side. 4 |
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