 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| U6049B Radiator Fan Controlled Timer Description The bipolar integrated circuit, U6049B, is designed as a radiator fan controlled timer. After the ignition is switched off, the thermal switch of the engine can activate the radiator fan via relay for a preset period to support the cooling process. Features D D D D D Delay time range: 3.7 s to 20 h Cooling time starts when thermal switch is closed RC-oscillator determines switching characteristics Relay driver with Z-diode Debounced input for coolant temperature switch D Not debounced input for ignition key (Terminal 15) D Load-dump protection D RF interference protected D Protection according to ISO/TR 7637-1 (VDE 0839) Ordering Information Extended Type Number U6049B U6049B-FP Package DIP8 SO8 Remarks Block Diagram C2 OSC 6 Oscillator R2 Vstab 7 47 mF VS 8 C1 R 1 510 W VBatt Stabilization Power-on reset Load-dump detection 1 GND Frequency divider Debouncing Monoflop Logic Relay control output 2 Output Thermal switch 4 R4 2 kW Ignition 5 Programming C3 100 nF R3 3 94 8748 VBatt R5 20 kW Terminal 15 Figure 1. Block diagram with external circuit TELEFUNKEN Semiconductors Rev. A3, 04-Feb-97 1 (8) U6049B Pin Configuration Pin 1 2 3 4 5 6 7 8 Symbol GND Output Ignition Sth Program OSC Vstab VS Function Reference point, ground Relay control output Signal input, ignition Thermal switch, input Programming input RC oscillator input Stabilized voltage Supply voltage GND Output 1 8 VS Vstab OSC Program 13313 2 7 U6049B Ignition Sth 3 6 4 5 Figure 2. Pinning Functional Description Power Supply, Pin 8 For reasons of interference protection and surge immunity, the supply voltage (Pin 8) must be provided with an RC circuit as shown in figure 2a. Dropper resistor, R1, limits the current in case of overvoltage, whereas C1 smoothes the supply voltage at Pin 8. Recommended values are: R1 = 510 W, C1 = 47 mF. The integrated Z-diode (14 V) protects the supply voltage,VS. Therefore, the operation of the IC is possible between 6 V and 16 V supplied by VBatt. However it is possible to operate the integrated circuit with a 5 V supply, but it should be free of interference voltages. In this case, Pin 7 is connected to Pin 8 as shown in figure 4, and the R1C1 circuit is omitted. VBatt R1 C1 47 mF/ 16 V 510 W R2 C2 C2 VS = 5 V R2 8 8 7 6 5 VBatt 7 6 5 U6049B U6049B 1 1 2 3 4 13312 13311 2 3 4 Figure 3. Basic circuit for 12 V voltage supply and oscillator Figure 4. Basic circuit for VS = 5 V 2 (8) TELEFUNKEN Semiconductors Rev. A3, 04-Feb-97 U6049B Oscillator, Pin 6 Oscillator frequency, f, is determined mainly by R2C2-circuit. Resistance R2 determines the charge time, whereas the integrated resistance (2 kW) is responsible for discharge time. For the stability of the oscillator frequency, it is recommended to select R2 much greater than internal resistance (2 kW), because the temperature response and the tolerances of the integrated resistance are considerably greater than the external resistance value. Oscillator frequency, f, is calculated as follows: f Power-on Reset When the operating voltage is switched on, an internal power-on reset pulse (POR) is generated which sets the logic of the circuits to a defined initial condition. The relay control output is disabled. Ignition Terminal 15 20 k W 100 nF Pin 3 2V - + +t )t 1 1 7V 15 pF 20 kW 94 8813 2 where t1 = charge time = a1 t2 = discharge time = a2 a1 Figure 5. Input circuit for ignition (Pin 3) @2 @ R2 C2 kW C2 Pin 4, 5 - + 7V 15 pF 94 8815 and a2 are constants and has a1 = 0.833 and a2 = 1.551 when C2 = 470 pF to 10 nF a1 = 0.746 and a2 = 1.284 when C2 = 10 nF to 4700 nF Debounce time, t3, and the delay time, td, depend on the oscillator frequency, f, as follows: t3 td +6 1 f + 73728 1 f Figure 6. Input circuit Pin 4 and Pin 5 Table 1 shows relationships between t3, td, C2, R2 and frequencies from 1 Hz to 20 kHz. Output, Pin 2 Output Pin 2 is an open-collector Darlington circuit with integrated 23-V Z-diode for limitation of the inductive cut-off pulse of the relay coil. The maximum static collector current must not exceed 300 mA and the saturation voltage is typically 1.1 V @ 200 mA. Relay Control Output behavior, Pin 2 The U6049B controls the cooling fan motor in an automobile by means of a relay. Figure 5 shows the internal input circuit of ignition (Pin 3). It has an integrated pull-down resistor (20 kW), RF-capacitor (15 pF) and 7-V Z-diode. It reacts to voltages greater than 2 V. For the programming input, Pin 5, and thermal switch input, Pin 4, there is neither a pull-up nor pull-down resistor integrated internally (see figure 6). One can reduce the standby current through the internal Z-diode by selecting a higher value for resistance R4 (see figure 8, R4 up to 200 kW). Resistance R5 determines the contact current through the thermal control switch, Sth. Ignition input (terminal 15) is not debounced. Debouncing can be achieved by an external circuit (R3,C3) connected to Pin 3 (see figures 1 and 7). Interference Voltages and Load-Dump The IC supply is protected by R1, C1, and an integrated Z-diode, while the inputs are protected by a series resistor, integrated Z-diode and RF-capacitor. The relay control output is protected via the integrated 23-V Z-diode in the case of short interference peaks. It is switched to conductive condition for a battery voltage of greater than approx. 40 V in the case of load-dump. The output transistor is dimensioned so that it can withstand the current produced. TELEFUNKEN Semiconductors Rev. A3, 04-Feb-97 3 (8) U6049B VBatt Ignition Sth closed open Pin 3 Pin 4 Delay time (internal) Relay Pin 5=Vstab: Relay Pin 5 = GND: 94 8817 Pin 2 Pin 2 Pin 5 = Programming Pin S = td td is stopped, if Sth is open Figure 7. Timing waveform The programming input (Pin 5) is high-ohmic and should therefore be connected to Pin 7 (Vstab) or GND. The relay control output is shown according to Pin 5 connection. Thermal switch input, Pin 4, is debounced (see figure 1). Relay control output, Pin 2, is disabled when the battery voltage, VBatt, is applied. Relay control output follows the conditions of the switch, Sth, only when the ignition is switched-ON. This is possible only after the debounce time, t3. In this case Pin 5 is connected to Pin 7. Timing waveforms are shown in figure 4. Total delay time, td, is the sum of all ON-pulses caused by the thermostatic switching. This can run down at once or in parts. If Sth (Pin 4) is open, the oscillator is stopped (switched-off) internally, but when it starts (Sth closed), the delay time, td, starts running again. In case of renewed switching of ignition, the counter of the delay time is reset. VBatt 510 W R1 8 C1 47 mF 1 200 kW 100 nF R2 7 6 C2 5 U6049B 2 C3 100 nF 20 kW R3 3 4 R5 R4 2 kW Sth Thermal switch 94 8812 Terminal 15 Figure 8. R4 = 2 kW to 200 kW Basic circuit 4 (8) TELEFUNKEN Semiconductors Rev. A3, 04-Feb-97 U6049B Absolute Maximum Ratings Parameters Operating voltage, static, 5 min Ambient temperature range Storage temperature range Junction temperature Symbol VBatt Tamb Tstg Tj Value 24 -40 to +125 -55 to +125 150 Unit V C C C Thermal Resistance Parameters Junction ambient DIP8 SO8 Symbol RthJA RthJA Maximum 110 160 Unit K/W K/W Electrical Characteristics VBatt =13.5 V, Tamb = 25C, reference point ground, figure 2, unless otherwise specified Parameters Operating voltage Test Conditions / Pin R1 510 W t < 5 min t < 60 min Without R1, C1 figure 2b Pins 7 and 8 Pin 7 Power-on reset Push buttons open Pin 8 I8 = 10 mA Pin 8 Pin 2 I2 = 200 mA I2 = 300 mA V2 = 14 V w Symbol VBatt Min 6 Typ 5 V supply Stabilized voltage Undervoltage threshold Supply current Internal Z-diode Relay output Saturation voltage V8, V7 V7 VS IS VZ V2 4.3 5.0 3.0 13.5 5.2 1.3 14 1.2 2 Max 16 24 18 6.0 5.4 4.2 2.0 16 Unit V V V V mA V V Leakage current Ilkg Output current I2 Output pulse current Load dump pulse I2 Internal Z-diode I2 = 10 mA V2 Oscillator input f = 0.001 to 40 kHz, see table 1 Pin 6 Internal discharge resistance R6 Switching voltage Lower V6L Upper V6H Input current V6 = 0 V -I6 Switching times Debounce time t3 Delay time td Inputs Pin 3, 4, 5 Switching threshold V3,4,5 Internal Z-diode I3, 4, 5 = 10 mA V3,4,5 Ignition input Pin 3 Pull-down resistance Switched to VBatt ( 15) R3 Thermal switch Pin 4 Input current V4 = 0 V - I4 Programming input Pin 5 Input current V5 = 0 V - I5 1.5 100 300 1.5 24 2.4 1.4 3.5 1 7 74752 mA mA A V kW V 20 1.6 0.9 2.8 22 2.0 1.1 3.1 mA cycles cycles V V kW 5 72704 1.6 6.5 13 2.0 7.1 20 2.4 8.0 50 2 2 mA mA 5 (8) TELEFUNKEN Semiconductors Rev. A3, 04-Feb-97 U6049B Table 1. Oscillator frequency, debounce time, delay time. dimensioning Debounce time t3 ms 6000 3000 2000 1500 1200 1000 857 750 667 600 300 200 150 120 100 86 75 67 60 30 20 15 12 Delay time td C2 R2 Frequency f Hz 600 700 800 900 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 14000 15000 16000 17000 18000 19000 20000 Debounce time t3 ms 10.00 9.00 8.00 7.00 6.00 3.00 2.00 1.50 1.20 1.00 0.86 0.75 0.67 0.60 0.55 0.50 0.46 0.43 0.40 0.38 0.35 0.33 0.32 0.30 Delay time td C2 R2 Frequency f Hz 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 min 1229 614 410 307 246 205 176 154 137 123 61 41 31 25 20 18 15 14 12 s 369 246 184 147 nF 4700 1000 1000 1000 1000 1000 1000 1000 1000 1000 100 100 100 100 100 100 100 100 100 10 10 10 10 kW 280 650 440 330 260 220 190 160 140 130 650 440 330 260 220 190 160 140 130 600 400 300 240 min s 123 105 92 82 74 37 25 18 15 12 11 9 8 7 6.7 6.1 5.7 5.3 4.9 4.6 4.3 4.1 3.9 3.7 nF 10 10 10 10 10 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 kW 200 170 150 130 120 600 400 300 240 200 170 150 130 120 110 99 91 85 79 74 70 66 62 59 6 (8) TELEFUNKEN Semiconductors Rev. A3, 04-Feb-97 U6049B Package Information Package DIP8 Dimensions in mm 9.8 9.5 1.64 1.44 7.77 7.47 4.8 max 6.4 max 0.5 min 0.58 0.48 7.62 8 5 2.54 3.3 0.36 max 9.8 8.2 technical drawings according to DIN specifications 13021 1 4 Package SO8 Dimensions in mm 5.00 4.85 1.4 0.4 1.27 3.81 8 5 0.25 0.10 0.2 3.8 6.15 5.85 5.2 4.8 3.7 technical drawings according to DIN specifications 13034 8 5 TELEFUNKEN Semiconductors Rev. A3, 04-Feb-97 7 (8) U6049B 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 8 (8) TELEFUNKEN Semiconductors Rev. A3, 04-Feb-97 |
Price & Availability of U6049B
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |