U208B TEMIC | Alldatasheet
Document overview
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Technical content
Features
/C0068Automatic retriggering /C0068Triggering pulse typ. 125 mA /C0068V oltage and current synchronisation /C0068Internal supply voltage monitoring /C0068Current requirement ≤ 2.5 mA Block Diagram 236N 95 11224 R 3 220 k/C0087/ R 4 470 k/C0087/ –V S 10 nF GND C 1 22 /C0109F/ 25 V R 7 180 /C0087 M R 118 k/C0087/ BYT77 D 1 2 W TIC L N V M =
230 V ~
= f (V6) C 2 100 k/C0087 Current detector V oltage monitoring 0.5 W 0.5 W R 2 180 k/C0087 R 6 18 k/C0087 R 5 120 k/C0087 /C0246 Figure 1. Block diagram for simple phase control system
Rev. A1, 28-May-96 2 (7)
Description
The U208B is fitted with voltage limiting and can there- fore be supplied directly from the mains. The supply voltage between Pin 1 (+ pol//C0259) and Pin 2 builds up across D 1 and R1 and is smoothed by C1. The value of the series resistance can be approximated using figure 1: R 1 /C0043V M –V S 2I S Further information regarding the design of the mains supply can be found in the data sheets in the appendix. Operation using an externally stabilized DC voltage is not recommended. If the supply cannot be taken directly from the mains because the power dissipation in R 1 would be too large, then the circuit shown in the following figure 2 should be employed. 123 4 5 C 1R 1 24 V~ 95 10362 Figure 2. Supply voltage for high current requirements /C0097max can also be adjusted using R2. the pulse width can be evaluated by assuming 8 /C0109s/nF). 6 can be in the range 0 V to –7 V (reference point Pin 1). phase angle /C0097min is when Vpin6 = Vpin1. triac fires or the half cycle finishes.
Figure 3. Explanation of terms in phase relationship
Rev. A1, 28-May-96 4 (7) Thermal Resistance Parameters Symbol Value Unit Junction ambient DlP8 SO8: on p.c. board SO8: on ceramic R thJA 120 220 140 K/W
Electrical Characteristics
–V S = 13.0 V , Tamb = 25 °C, reference point pin 1, unless otherwise specified Parameters Test Conditions / Pins Symbol Min. Typ. Max. Unit Supply voltage for mains operations Pin 2 –V S 13.0 V Limit V Supply voltage limitation–IS = 3 mA Pin 2 –IS = 30 mA –V S 14.6 14.7 16.6 16.8 V DC supply current –V S = 13 V Pin 2 –IS 1.0 2.2 2.5 mA Voltage monitoring Turn-on threshold Pin 2 –V SON 11.2 13.0 V Turn-off threshold Pin 2 –V SOFF 9.9 10.9 V Phase control currents Current synchronisation Pin 8 Isync.I 0.35 3.5 mA V oltage synchronisation Pin 7 Isync.V 0.35 3.5 mA V oltage limitation /C0034II = 5 mA Pin 8 Pin 7 /C0034V I /C0034V I 8.0 8.0 8.9 8.9 9.5 9.5 V Reference ramp figure 4 Load current IS = f(R4) Pin 5 I5 1 20 /C0109A R /C0246-reference voltage Pin 4, 2 V /C0246Ref 1.06 1.13 1.18 V Temperature coefficient Pin 4 TC V /C0246Ref –0.5 mV/K Pulse output Output pulse current R 7= 0, VGT = 1.2 V Pin 3 Io 100 125 150 mA Reverse current Pin 3 Ior 0.01 3.0 /C0109A Output pulse width C /C0246 = 10 nF Pin 5-1 tp 80 /C0109s Automatic retriggering Repetition rate Pin 3, 5 tpp 3 4.5 6 tp
25 V C 1
Figure 9. Phase control (power control) for electric tools
Rev. A1, 28-May-96 7 (7) Ozone Depleting Substances Policy Statement It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances (ODSs). The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban on these substances. TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of continuous improvements to eliminate the use of ODSs listed in the following documents. 1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively 2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental Protection Agency (EPA) in the USA 3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively. TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances. We reserve the right to make changes to improve technical design and may do so without further notice. Parameters can vary in different applications. All operating parameters must be validated for each customer application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 (0)7131 67 2831, Fax number: 49 (0)7131 67 2423