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features ? adjustable and retriggerable tracking time ? window monitoring for sensor input ? enable input for triggering ? internal noise suppressio n (40 ms) and retrigger blocking (640 ms) ? two- or three-wire applications applications ? motion detectors ? touch sensors ? timers 1. description the timer control circuit u2100b uses bipolar technology. it has different mode selec- tions (zero voltage switch, phase control and relay control). the output stage is triggered according to input conditions. it can be used in triac application for two- or three-wire systems as a power switch. timer control for triac and relay u2100b rev. 4769c?indco?07/05
2 4769c?indco?07/05 u2100b figure 1-1. block diagram with external circuit noi s e su ppre ss ion 40 m s retrigger del a y 640 m s 0.65v ref 0.6v ref on 8 2 4 6 5 s ync rc o s cill a tor divider 1:2 10 en ab le 0.5v ref -v ref -v s o u tp u t r t c t c 2 trigger window control logic su pply volt a ge limit a tion volt a ge control monitoring mode s election trigger s ign a l + + c 1 r 1 d 1 + - 0.5v ref off + - 7 r s ync v m a in s 3 gnd l z lo a d n 1 r g
3 4769c?indco?07/05 u2100b 2. pin configuration figure 2-1. pinning dip8/so8 gnd -v s output s ync vref o s c trig en 1 2 3 45 6 8 7 table 2-1. pin description pin symbol function 1 gnd reference point 2 ?vs supply voltage 3 output driver output 4 sync synchronization and mode selection 5enenable 6 trig input trigger signal 7 osc rc oscillator 8 vref reference voltage
4 4769c?indco?07/05 u2100b 3. general description the monostable integrated power-control circui t u2100b can be used according to the mode selection in relay or tria c applications. in addition, it can be used in triac applications for two-wire systems as power switch (the load in series to the switch), where the supply voltage for the con- trol unit is gained from the remaining phase angle ( min operation). figure 3-1. two-wire circuit figure 3-2. three-wire circuit for three-wire switch systems, two operational modes are possible: ? zero voltage switch operation for triac control ? static operation for relay control control l n control l n
5 4769c?indco?07/05 u2100b 3.1 mode selection pin 4 and supply voltage pin 2 the operational modes can be selected by the external voltage at the synchronous input pin 4 (clamping). the mode selection determines the current requirement of the relay's or triac's driver stage and hence the selection of the supply voltage. 3.2 zero voltage switch operation ( figure 3-3 on page 6 ) selection condition: v 4 = internal synchronous limitation, without external clamping i tot = i s + i p + i x where: i s = supply current of the ic without load i p = average trigger current i g i x = external circuit current requirement v m = mains voltage required firing pulse width t p where: i l = triac latching current p = power at load z r 1 0.85 v m v s ? 2 i tot -------------------- - t p 2 -- - arcsin i l v m p2 ------------------- ?? ?? = r sync [k ] v m [v] 2sin t p [s] () 0.7 ? 1.8 10 -2 -------------------------------------------------------------------------------- - 176 ?
6 4769c?indco?07/05 u2100b figure 3-3. zero voltage switch operation 3.3 dc operation selection condition ( figure 3-4 ): +v 4 = 6.1v, ?v 4 = internal limitation where: r 0 1/10 x c i tot = i s + i rel + i x figure 3-4. dc operation + 2 l n z r 1 v m r g -v s i g r s ync c 1 d 1 4 s ync 3 o u tp u t 1 gnd x c 0.85 v m v s ? i tot -------------------- - = c 0 1 x c ----------------- = + 2 22v l rel r 0 v m 2 3 0v ~ -v s r s ync c 1 c 0 i rel 1 3 o u tp u t 4 s ync gnd n
7 4769c?indco?07/05 u2100b 3.4 min operation selection condition ( figure 3-5 ): ?v 4 = 6.5 to 7.8v, +v 4 = internal limitation v r(peak) is the peak voltage of the remaining phase angle, which should be high enough to gener- ate the supply voltage, v s . figure 3-5. min operation (two-wire operation) c 1 = 100 f/35v c o = 0.33 f/250v ~ r o =390 r sync =220 k r =10 k r g =390 d 1 = in 4007 r max r sync 3.6 v v r(peak) 3.6 v ? ---------------------------------------- = r min r sync 10 v v m 210 v ? ---------------------------------------- - = + 2 22v l n 1n414 8 6. 8 v r 0 z r g r -v s i g r s ync c 1 c 0 v r(pe a k) d 1 in4007 4 s ync 3 o u tp u t 1 gnd v m 2 3 0v ~
8 4769c?indco?07/05 u2100b 3.5 tracking time pin 7 an internal rc osc illator with a following divider stage 1:2 10 allows a very long and reproducible tracking time. the rc values for the required final time, t t , can be calculated as follows: 3.6 trigger input s pins 5 and 6 two and-connected, identical inputs determine the trigger conditions of the monostable time stages ( figure 3-6 , figure 3-7 on page 9 ), i.e., both inputs must be in position ?on? so that the output is switched on. the tracking time starts after the trigger conditions have elapsed. the out- put on state is given until the tracking time has elapsed. input pin 5 is a simple comparator, whereas inpu t pin 6 is designed as a window discriminator. the noise suppression for t on = 40 ms prevents peak noise signa ls at the inputs which could trigger the circuit. at the same time, the retrigger function is delayed for a duration of 640 ms (t off ) to avoid noise signal that may trigger the relay. figure 3-6. trigger condition, pin 5 r t [ ] t t [s] 10 6 1.6 1024 c t [f] ---------------------------------------------------- = c t [f ] t t [s] 10 6 1.6 1024 r t [ ] -------------------------------------------------- - = t t [s] c t [f] r t [ ] 1.6 1024 10 6 -------------------------------------------------------------------------- - = t 1 = 0.5 v ref t 2 = 0.65 v ref v ref v 5 off hy s tere s i s on 0
9 4769c?indco?07/05 u2100b figure 3-7. trigger condition, pin 6 t 1 = 0.5 v ref t 2 = 0.65 v ref v ref v 6 on on 0 off 4. absolute maximum ratings stresses beyond those listed under ?absolute maximum ratings? may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions beyond t hose indicated in the operational sections of this specification is not implied. exposure to absolute maximum rati ng conditions for extended periods may affect device reliability . parameters pin symbol value unit supply 2 supply current peak current t 10 ms ?i s ?i s 10 60 ma ma supply voltage ?v s 32 v reference voltage source output current 8i o 3ma synchronization input current t 10 ms 4 i sync. i sync. 5 20 ma ma window monitoring input voltage 6 ?v 1 v ref to 0 v enable schmitt trigger 5 input voltage ?v 1 v ref to 0 v driver output 3 collector voltage ?v o v s to 2 v storage temperature range t stg ?40 to +125 c junction temperature t j 125 c ambient temperature range t amb 0 to 100 c 5. thermal resistance parameters symbol value unit junction ambient dip8 r thja 110 k/w so8 on pc board r thja 220 k/w so8 on ceramic r thja 140 k/w
10 4769c?indco?07/05 u2100b 6. electrical characteristics v s = ?18v, t amb = 25c, reference point pin 1, unless otherwise specified. parameters test conditions pin symbol min. typ. max. unit supply-voltage limitation i s = 800 a i s = 2 ma 2 ?v s ?v s 21 21.3 23 24 v v current consumption i 3 = 0 ?i s 750 a supply-voltage monitoring 2 on-threshold ?v s 15 v off-threshold ?v s 6.5 v reference voltage i 8 = 0.1 ma i 8 = 1.5 ma 8 ?v ref ?v ref 4.95 4.75 5.45 5.45 v v synchronization 4 input current i sync 0.1 1.1 ma voltage limitation i 4 = 1 ma v sync 8.8 9.4 10 v remaining phase angle min threshold on off v t v t 3.6 1.8 4 2 4.4 2.2 v v zero identification 4 zero identification on off v t i t v t i t 1.5 8.5 4 20 v a v a operation selection 4 zero voltage switch v sync v 4 limit min operation +v sync ?v sync v 4 limit 6.5 to 7.8 v v dc mode ?v sync +v sync v 4 limit 6.5 to 7.8 v v window monitoring, figure 3-7 on page 9 6 threshold 1 ?v i /v ref 0.52 0.49 0.46 threshold 2 ?v i /v ref 0.67 0.65 0.63 enable schmitt trigger, figure 3-6 on page 8 5 threshold 1 off ?v i /v ref 0.33 0.3 0.27 threshold 2 on ?v i /v ref 0.62 0.6 0.58 oscillator 5 threshold 1 7 - 1 v i /v ref 0.25 0.20 0.15 threshold 2 7 - 8 v i 100 200 mv input current 7 i i 100 500 na output stage 3 saturation voltage i 3 = 100 ma v 3-2 2v output current i 3 100 ma f 1 1.6 r t c t ---------------------------------- =
11 4769c?indco?07/05 u2100b 7. applications figure 7-1. lamp time control 18 seconds to 23 minutes for two-wire systems figure 7-2. fan tracking time control 18 seconds to 23 minutes 10 k 220 k /0.5w 3 90 3 90 tr a cking time timer s t a rt 100 nf 33 0 nf s 1 4.7 f 33 0 nf 1n 414 8 u2100b 1 2 3 4 8 7 6 5 + + + - r 7 33 k r 5 2.5 m r 4 33 k r 6 r 2 r 0 r 3 c 1 c 2 c 3 c 0 d 3 d 1 -v s tr i a c n l d 4 5.1v d 2 22v tr a cking time a dj us tment s 1 s 1 open, motor s t a rt s 2.5 m r 4 100 k r 7 3 90 r 0 c 0 100 k r 2 u2100b 5 6 7 8 4 3 2 1 + 33 k r 5 100 k 1000 r 6 4.7 f + c 2 100 f c 1 33 0 nf c 3 33 0 nf d 1 22v rel n m l
12 4769c?indco?07/05 u2100b 9. package information 8. ordering information extended type number package remarks u2100b-xy dip8 tube u2100b-xfpy so8 tube u2100b-xfpg3y so8 taped and reeled 9.8 9.5 package dip8 dimensions in mm 1.64 1.44 4.8 max 0.5 min 3.3 0.58 0.48 7.62 2.54 6.4 max 0.36 max 9.8 8.2 7.77 7.47 85 14 technical drawings according to din specifications
13 4769c?indco?07/05 u2100b 10. revision history technical drawings according to din specifications package so8 dimensions in mm 5.00 4.85 0.4 1.27 3.81 1.4 0.25 0.10 5.2 4.8 3.7 3.8 6.15 5.85 0.2 85 14 please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. revision no. history 4769c-indco-07/05 ? put datasheet in a new template ? section 3.5 ?tracking time pin 7? on page 8 changed 4769b-indco-12/04 ? put datasheet in a new template ? table ?electrical characteristics? on page 9 changed
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