U6433B TEMIC | Alldatasheet

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Technical content

Features

/C0068Temperature and voltage compensated frequency /C0068Warning indication of lamp failure by means of frequency doubling can be disabled /C0068V oltage dependence of the car indicator lamps compensated for lamp failure /C0068Relay output with high current carrying capacity and low saturation voltage /C0068Minimum lamp load for flasher operation/C0121 1 W /C0068Load-dump protection /C0068Very low susceptibility to EMI /C0068Protection according to ISO/TR 7637/1 level 4

Ordering Information

Extended Type Number Package Remarks U6433B–FP SO8 Block Diagram V S – 49 mV V S – 8 mV G 4 G 2+ G 5 D 1 V S 8173 23 V 470 /C0087 R 4 V S–6 V 4.7 /C0109F R 1 82 k/C0087 94 9289 V S – 4 V V S – 8 V C 1 V S 49 a Shunt R 3 18 m /C0087 R 2 1.5 k/C0087PL>1 W K 1 K 4 K 5 K 2 K 3 Figure 1. Application circuit as a car flasher

1 GND IC ground

2 V S Supply voltage

3 REL Relay driver

4 OSC Oscillator

5 OSC Oscillator

6 V S Supply voltage

7 LD Lamp failure detection

8 SI Start input (49a)

Figure 2. Pinning 4 to ground (–31) in the case of battery reversal. 2 and R4 limits the current pulses in the IC. automotive relay with a minimum coil resistance of 60 /C0087. acteristic of filament lamps. resistor let the flasher work in frequency doubling mode. hazard warning switch) or with a small lamp load. S to Pin 6 is lower than the one to Pin 2. Flasher operation starts with a lamp load of PL /C0121 1 W. below K3 threshold (flasher switch closed).

Rev. A3, 25-Feb-97 3 (5) Absolute Maximum Ratings Reference point Pin 1 Parameters Symbol Value Unit Supply voltage Pins 2 and 6 V S 18 V Surge forward current tp = 0.1 ms Pins 2 and 6 tp = 300 ms Pins 2 and 6 tp = 300 ms Pin 8 IFSM 1.5 1.0 30.0 A A mA Output current Pin 3 IO 0.3 A Power dissipation Tamb = 95/C0095C SO 8 Tamb = 60/C0095C SO 8 Ptot 340 560 mW mW Junction temperature Tj 150 /C0095C Ambient temperature range Tamb –40 to +105 /C0095C Storage temperature range Tstg –55 to +150 /C0095C Thermal Resistance Parameters Symbol Value Unit Junction ambient SO8 R thJA 160 K/W

Electrical Characteristics

Typical values under normal operation of the application circuit shown in figure 1, VS = 12 V (Pins 2 and 6). Tamb = 25/C0095C, reference point ground (–31), unless otherwise specified. Parameters Test conditions / Pin Symbol Min. Typ. Max. Unit Supply voltage range Pins 2 and 6 V S 9 16.5 V Supply current, dark phase Pins 2 and 6 IS 4.5 8 mA Supply current, bright phase Pins 2 and 6 IS 7.0 11 mA Relay output, saturation voltage IO = 150 mA, V S = 9 V Pin 3 V O 1.0 V Relay output reverse current Pin 3 IO 0.1 mA Relay coil resistance R L 60 /C0087 Start delay First bright phase ton 10 ms Frequency determining resistor R 1 6.8 510 k/C0087 Frequency determining capacitor C 1 47 /C0109F Frequency tolerance Normal flashing, basic frequency f1 not including the tolerances of the exter- nal components R 1 and C1 Δ f1 –5 +5 % Bright period Basic frequency f1, V S = 9 – 15 V Δ f1 47 53 % Bright period Control frequency f2, V S = 9 – 15 V Δ f2 37 45 % Frequency increase Lamp failure, V S = 9 – 15 V f2 2.15/C0032f1 2.3/C0032f1 Hz

Rev. A3, 25-Feb-97 4 (5) Electrical Characteristics (continued) Parameters Test conditions / Pin Symbol Min. Typ. Max. Unit Control signal threshold 1V S = 15 V Pin 7 V S = 9 V V S = 12 V V R3 mV Control signal threshold 2 V R3 2 10 mV Leakage resistance 49a to GND R p 5 k/C0087 Lamp load PL 1 W

Package Information

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

Rev. A3, 25-Feb-97 5 (5) 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