techni cal data 2011, february, rev. 0 1 triac phase angle controller the ila1185a generates controlled triac triggering pulses and allows tachless speed stabilization of universal motors by an integrated positive feedback function. typical applications are power hand tools, vacuum cl eaners, mixers, light dimmer and other small appliances. ? supply power obtained from ac line ? can be used with 220 v/50 hz or 110 v/60 hz ? low count/cost external components ? optimum triac firing (2nd and 3rd quadrants) ? repetitive trigger pulses whe n triac current is interrupted by motor brush bounce ? triac current sensing to allow inductive loads ? programmable soft - start ? power failure detection and general circuit reset ? low power consumption; 6.0 ma pin connection 1 14 2 13 3 12 4 11 5 10 6 9 7 8 v ee v cc gate trigger soft start nc finning angle set ramp generator nc nc bias current current cense feedback input voltage cense integration cap figure 1. representative block diagram ila1185a
i l a 1185a 2011, february, rev. 0 1 maximum ratings (voltages are referenced to pin 14 (ground) unless other noted) rating symbol value unit maximum voltage range per listed pin pins3. 5,11 (not connected) pins 4,8.13 pin 2 maxi mum positive voltage (no minimum value allowed; see current ratings) v pin v pin12 v pin1 - 20 to+20 - v cc to 0 - 3.0 to +3.0 0 0.5 v maximum current per listed pin pin 1 pin 6 and 7 in 9 pin 10 pin12 i pin 20 2.0 0.5 300 - 500 ma ma ma a a ma ximum power dissipation ( a =25 o ) p d 250 mw maximum thermal resistance, .junction - to - ambient r ja 100 o c/w operating ambient temperature range t a 0 to + 70 o c storage temperature range tstg - 55 to <+ 125 o c * stresses beyond those listed under ?absolute maximum ratings? may cause permanent damage to the device. these are stress ratings only and functional operation of the device at these or any other condi tions beyond those indicated under ?recommended operating conditions? is not implied. exposure to absolute - maximum - rated conditions for extended periods may affect device reliability. electrical characteristics ( a = 25 , voltages are referenced to pin 14 (ground) unless other noted.) characteristics symbol min typ ax unit power supply zener regulated voltage, (vpin1) i pin1 = 2.0 ma circuit current consumption. ipin1 v pin1 = - 6,0v,i pin2 =0a monitoring enable supply vol tage (v en ) monitoring disable supply voltage (v dis ) - v cc - i cc - 9.6 - 2.0 - 8.6 - 1.0 - 7.6 - v ma v pin1en v pin1dis v cc +0.2 v en +0.12 v cc +0.5 v en +0.3 v phase set control voltage static offset v pin3 ? v pin12 pin 12 input bias current v pin4 ? v pin12 residual offset v off i pin12 1.2 - 200 - - - 180 2.0 0 - v n mv soft - start capacitor charging current r pin10 = 100 k ? v pin13 from - vcc to - 3.0v l pin13 - 17' - 14 - 11 a sawtooth generator sawtooth capacitor discharge current r 10 = 100 k ? , vpin4 from - 2.0 to - 6.0v capacitor charging current sawtooth - high voltage (v pin 4 ) sawtooth minimum low voltage (v pin4 ) l pin4 l pin4 v hth v lth 67 - 10 - 2.5 - 70 - - 1.6 - 7.1 73 - 1.5 - 1.0 - a ma v . v
i l a 1185a 2011, february, rev. 0 1 electrical characteristics ( a = 25 , voltages are referenced to pin 14 (ground) unless other noted.) ch aracteristics symbol min typ ax unit positive feedback pin 9 input bias current, v pin9 = 0 programming pin voltage related to pin 1 transfer function gain ? v pin8 / ? v pin9 r 10 = 100 k ? . ? v pin9 =50 mv r 10 =27 0 k ? . ? v pin9 =50 mv pin 8 output internal impedance i pin9 v pin10 a a z pin8 - 1.0 - - - 2xi pin10 1.25 75 36 120 - 1.5 - - - v k ? trigger pulse generator output current (sink) v pin2 =0v output leakage current v pin2 =+2.0v output pulse width c 4 =47nf, r 10 =270k ? output pulse repetition period c 4 = 47nf r 10 =270 k ? current synchronization threshold levels i pin6 , i pin7 i pin2 t p t i sync 60 - - - - 40 - - 55 420 - 80 4.0 - - 4 +40 ma a s s a pin function description pin no. function description 1 v ee this pin is the negative supp ly for the chip and clamped at - 8.6 v by an internal zener. 2 gate trigger pulse this pin supplies - 1.0v triac trigger pulse at twice the line frequency. 3 nc not connected. 4 ramp generator the value of the capacitor at this pin determines the slope o f the ramp. 5 nc not connected. 6 current sense this pin senses if the triac is on, and if so, will disable the gate trigger pulse. 7 voltage sense the internal timing of the chip is set by the frequency of the voltage at this pin 8 integration capacit or this pin is the output of the feedback and the variation in voltage is averaged out by the capacitor. 9 feedback input the change in load current is detected by the change in voltage across r9. 10 current program the bias current for the circuit is de termined by the resistor value at this pin. 11 nc not connected. 12 phase angle set the voltage at this pin sets the no - toad firing angle. 13 soft - start the firing angle is slowly increased from 180 o to the set value of pin 12. 14 v cc ground
i l a 1185a 2011, february, rev. 0 1 n suffix plastic dip (ms - 001aa) symbol min max a 18.67 19.69 b 6.1 7.11 c 5.33 d 0.36 0.56 f 1.14 1.78 g h j 0 10 k 2.92 3.81 no tes : l 7.62 8.26 1. dimensions ?a?, ?b? do not include mold flash or protrusions. m 0.2 0.36 maximum mold flash or protrusions 0.25 mm (0.010) per side. n 0.38 d s uffix s oic (ms - 012ab) symbol min max a 8.55 8.75 b 3.8 4 c 1.35 1.75 d 0.33 0.51 f 0.4 1.27 g h j 0 8 no tes : 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 p 5.8 6.2 for a; for b ? 0.25 mm (0.010) per s ide. r 0.25 0.5 dimens ion, mm 1.27 5.27 2.54 7.62 dimens ion, mm a b h c k c m j f m p g d r x 45 seating plane 0.25 (0.010) m t -t- 1 14 7 8 a b f g d l h se ati ng plane n k 0.25 (0.010) m t m j -t- c 1 14 7 8
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