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. • • • • • SO ( MS-012AA) Pin No. 01 02,03,06,07 04 05 08 Table 1 - pins purpose of IC in 8-pin SO package Table 2 - Maximum and absolute maximum operation Junction temperature, ТJ Storage temperature, Тstg Input voltage, UI Input voltage, UI(τ), τ ≤ 100 ms Output current, IO Resistance junction-case, RθJC Resistance junction-ambient, RθJA 8 1 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 Parameter KK2931CD Unit O C C V V mA °С/W °С/W O Purpose Output Common Adjustment Disconnection output Input 2 3 4 Name Output Ground Adjust Output Inhibit Input conditions Maximum mode min max -40 125 UO+0,6 26 - 100 25(typ.) 160(typ.) Absolute maximum mode min max -60 150 -15 40 -50 60 100 25(typ.) 160(typ.) 1 KK2931CD D1 VI 08 51кОм C1 2 01 R1 R2 KK2931CD Output Inhibit 05 1 VO Output Input 02,03,06,07 04 SA1 Ground C2 Adjust IAdj IB R3 С1, С2 - 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 V O = V r e f (1 + from formula: R3 ) + I Adj R 3 , R2 (1) where resistors R2, R3 must meet the following condition: 2 2 ,5 к О м ≥ where R2 × R3 , R2 + R3 (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 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 Symbol Uref UO range Regline Regload IB RR Uds Uth (OV) -UO U th (OI) Test conditions min Rate max IO=10mA IO≤100mA (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 1,14 1,08 3 ÷ 24 - 1,26 1,32 1,5 1,0 1,0 1,0 Temperature TJ, o C 25±10 -40÷125 25±10 25±10 25±10 25±10 25±10 0,10 26 -0.3 - 0.2 0.6 40 1,9 1,2 50 25±10 25±10 25±10 25±10 25±10 25±10 -40÷125 25±10 -40÷125 25±10 UI = -15 V Output is «on» Output is «off» 2,5 3,25 - 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 CО =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 =14В, UO = 3,0В, IO = 10мА, R2 = 27 кОм, unless specified otherwise) Parameter Symbol Test Typical value Temperature unit conditions TJ, o C Output resistance, ZO ∆IO=1,0mA, 40 25±10 mOhm/V f=10Hz÷100kHz Consumption current, mA IB IO = 100 mA 6,0 25±10 Adjustment current, mkA IAdj 0,2 25±10 Noise voltage on output, mV/V Un f=10 Hz÷100 kHz; 140 25±10 Temporary unstability of output S 0,4 25±10 voltage, %/1000h Notes: Measurement of electrical parameters is conducted with capacitance CI =0.1mkF connected on input and CО =100 mkF on output. 3 KK2931CD D SUFFIX SOIC (MS - 012AA) Dimension, mm A 8 5 B H 1 G P 4 D K MIN MAX A 4.8 5 B 3.8 4 C 1.35 1.75 D 0.33 0.51 F 0.4 1.27 R x 45 C -T- Symbol SEATING PLANE J F 0.25 (0.010) M T C M M G 1.27 H 5.72 J 0° 8° K 0.1 0.25 1. Dimensions A and B do not include mold flash or protrusion. M 0.19 0.25 2. Maximum mold flash or protrusion 0.15 mm (0.006) per side for A; for B ‑ 0.25 mm (0.010) per side. P 5.8 6.2 R 0.25 0.5 NOTES: 4