Radiator controlled timer bipolar integrated circuit, 6049 design

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Radiator controlled timer bipolar integrated circuit, 6049 design

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6049
Radiator controlled timer
bipolar integrated circuit, 6049 designed radiator controlled timer. After ignition switched off, thermal switch engine activate radiator relay preset period, support cool-off process.
Features
Delay time range: Cool-off time starts when thermal switch closed oscillator determines switching characteristics Relay driver with Z-diode Debounced input coolant temperature switch
Vstab
debounced input ignition (Terminal Load dump protection interference protected Protection according ISO/TR 7637-1 (VDE 0839)
Cases:
VBatt
Oscillator
Stabilization Power-on reset Load dump detection
Frequency divider
Debouncing
Monoflop
Logic
Relay control output
Thermal switch
Programming
Ignition Terminal
8748
VBatt
Figure Block diagram with external circuit Rev. 28.11.1994
6049
Configuration
Symbol Output Ignition Program Vstab Function Reference point, ground Relay control output Signal input, ignition Thermal switch, input Programming input oscillator input Stabilized voltage Supply voltage Output
Vstab Program
Ignition
8854
Functional description
Power supply,
reasons interference protection surge immunity, supply voltage (Pin must provided with circuit shown figure Dropper resistor, limits current case overvoltage, whereas smoothes supply voltage Recommended values are: integrated Z-diode protects supply voltage,VS, therefore, operation possible between supplied VBatt. However, possible operate integrated circuit with supply, should free interference voltages. this case, connected shown figure R1C1 circuit omitted.
VBatt
VBatt
8750 8749
Figure Basic circuit voltage supply oscillator
Figure Basic circuit
Rev. 28.11.1994
TELEFUNKEN Semiconductors Oscillator,
Oscillator frequency, determined mainly R2C2-circuit. Resistance, determines charge time, whereas integrated resistance responsible discharge time. stability oscillator frequency, recommended select much greater than internal resistance kW), because temperature response tolerances integrated resistance considerably greater than external resistance value. Oscillator frequency, calculated follows:
6049
Power-on reset
When operating voltage switched internal power-on reset pulse (POR) generated which sets logic circuits defined initial condition. relay control output disabled.
Ignition Terminal
8813
where charge time discharge time
Figure Input circuit ignition (Pin
constants 0.833 1.551 when 0.746 1.284 when 4700 Debounce time, delay time, depend oscillator frequency, follows:
8815
+6@1 73728
Table shows relationships between frequencies from kHz.
Figure Input circuit
Output,
Output open collector Darlington circuit with integrated 23-V Z-diode limitation inductive cut-off pulse relay coil. maximum static collector current must exceed saturation voltage typically
Relay control output behaviour,
Integrated circuit control cooling motor automobile means relay. Figure shows internal input circuit ignition (Pin integrated pull-down resistor kW), RF-capacitor Z-diode. reacts voltages greater than programming input, thermal switch input, there neither pull-up pull-down resistor integrated internally (figure 3b). reduce standby current through internal Z-diode selecting higher value resistance (see figure kW). Resistance determines contact current through thermal control switch, Sth. Ignition input (terminal debounced. Debouncing achieved external circuit (R3,C3) connected (see figures
Interference voltages load dump
supply protected integrated Z-diode, while inputs protected series resistor, integrated Z-diode RF-capacitor (refer Figure relay control output protected integrated 23-V Z-diode case short interference peaks. switched conductive condition battery voltage greater than approx. case load dump. output transistor dimensioned that withstand current produced.
Rev. 28.11.1994
6049
VBatt
Ignition closed open
Delay time (internal) Relay 5=Vstab: Relay GND:
8817
Programming
stopped, open Figure Timing waveform Programming input (Pin high-ohmic, therefore should connected (Vstab) GND. Relay control output shown according connection. Thermal switch input, debounced (see figure Relay control output, disabled when battery voltage, VBatt, applied. Relay control output follows conditions switch, Sth, only when ignition switched-ON. This possible only after debounce time, this case connected Timing waveforms shown figure Total delay time, ON-pulses caused thermostatic switching. This down once parts. (Pin open, oscillator stopped (switched-off) internally when starts (Sth closed), delay time, starts running again. case renewed switching ignition, counter delay time reset.
VBatt
8812
Thermal switch
Terminal
Figure Basic circuit
Rev. 28.11.1994
6049
Symbol VBatt Tamb Tstg Value +125 +125 Unit
Absolute Maximum Ratings
Parameters Operating voltage, static, Ambient temperature range Storage temperature range Junction temperature
Thermal Resistance
Junction ambient Parameters Symbol RthJA RthJA Maximum Unit
Electrical Characteristics
VBatt =13.5 Tamb 25°C, reference point ground, figure unless otherwise specified Parameters Operating voltage
supply Stabilized voltage Undervoltage threshold Supply current Internal Z-diode Relay output Saturation voltage
Leakage current Ilkg Output current Output pulse current Load dump pulse Internal Z-diode Oscillator input 0.001 kHz, table Internal discharge resistance Switching voltage Lower Upper Input current Switching times Debounce time Delay time Inputs Switching threshold V3,4,5 Internal Z-diode V3,4,5 Ignition input Pull-down resistance Switched VBatt Thermal switch Input current Programming input Input current Rev. 28.11.1994
Without figure Pins Power reset Pushbuttons open
Test Conditions
Symbol VBatt
13.5
Unit
74752
cycles cycles
72704
6049
Frequency Debounce time 6000 3000 2000 1500 1200 1000 Delay time Frequency 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 14000 15000 16000 17000 18000 19000 20000
Table Oscillator frequency, debounce time, delay time. dimensioning
Debounce time 3.00 2.00 1.50 1.20 1.00 Delay time
1229
4700 1000 1000 1000 1000 1000 1000 1000 1000 1000
Rev. 28.11.1994
6049
Dimensions
Package:
8873
Package:
8862
reserve right make changes improve technical design without further notice. Parameters vary different applications. operating parameters must validated each customer application customer. Should buyer TEMIC products unintended unauthorized application, buyer shall indemnify TEMIC against claims, costs, damages, expenses, arising directly indirectly, claim personal damage, injury death associated with such unintended unauthorized use. TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 7131 2831, Number: 7131 2423
Rev. 28.11.1994

Radiator controlled timer bipolar integrated circuit, 6049 design

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