U2480B TEMIC | Alldatasheet
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Technical content
Features
/C006810 mV comparator thresholds /C0068Temperature compensated /C0068V oltage characteristic of the lamps is taken into account /C0068Input voltage range up to 23 V independent of supply /C0068Typical input currents 25 /C0109A, so that protective resistors can be connected in series /C0068Internal protection measures for pulses according to ISO TR 7637/1 /C0068ESD according to MIL-SID-883 C test method 3015.7 – Human body model: 4 kV – Machine model: 200 V EMI protection (TEM cell up to 100 V/m)
Ordering Information
Extended Type Number Package Remarks U2480B SDIP28 Block Diagram 13945 5 single comparators Stabili– zation 3 double comparators Logic / Timing Latch Output stage Oscillator GND Pilot lamp V Batt V S OSC V Stab V Stab
Figure 1. Block diagram
Figure 2. Pin configuration
1 REFK6 Reference for threshold voltage
2 E1K2 Input 1; single comparator K2
3 REFK2 Reference for threshold voltage;
4 E1K4 Input 1; single comparator K4
5 REFK4 Reference for threshold voltage;
6 E1K8 Input 1; single comparator K8
7 REFK8 Reference for threshold voltage;
8 OSC Oscillator input
9 GND Ground
10 V S Supply voltage
11 BL Input window comparator for
12 SP Programming pin for memory
13 V stab Stabilized voltage
14 Vout Output for tell-tale lamp
15 E1K1 Input 1; double comparator K1
16 REFK1 Reference for threshold voltage;
17 E2K1 Input 2; double comparator K1
18 NC Not connected
19 E1K3 Input 1; double comparator K3
20 REFK3 Reference for threshold voltage
21 E2K3 Input 2; double comparator K2
22 E1K7 Reference for threshold voltage;
23 REFK7 Reference for threshold voltage
24 E2K7 Input 2; double comparator K7
25 NC Not connected
26 E1K5 Input 1; single comparator K5
27 REFK5 Reference for threshold voltage
28 E1K6 Input 1; single comparator K6
Rev. A1, 22-Oct-97 4 (8) Functional Description Comparators The voltage threshold of all internal comparators has a typical value of V th = 10 mV . A voltage drop accross the shunt of Vsh/C0119V th means no fault in the lamp circuit and the output is disabled. In the event of a voltage drop Vsh/C0118V th, the output sup- plies the current IO , and the pilot lamp is activated by the external transistor. The output is reliably disabled for a voltage at the refer- ence pin of the comparators of VminRef /C0118 1/3 VS The typical values of the input currents are 25 /C0109A and are equally large at the switch-over instant, thus making it possible to connect protective resistors in series. The internal threshold is independent of the value of the protective resistor as long as all resistors of a comparator have the same value. Fuse Monitoring It is possible to monitor the fuses of the lamp circuits by means of an EXCLUSIVE OR function between K1 and K3 and between K5 and K6. If the Ref pin of K1 (orK5) is low and the Ref pin of K2 (or K6) is simultaneously high, or vice versa, a fault is indicated. Simultaneous failure of both fuses is not detected. A fuse is faulty if the input voltage at the pin Ref falls below the voltage V minRef (1/3 VS). Time Delay A fault is indicated only if it is present for td = 1.2/C00340.2 s. If an OK pulse/C0119100 ms occurs during this time, time counting is reset to ”0”. An OK pulse is generated if the comparators K1 to K8 and the input BL do not signal a fault. A periodic fault signal (period of less than 1 s) is indicated only if the mark-to-space ratio is/C011910/1, whereby the pulse time corresponds to an item of fault information. The time delay until the fault is indicated exceeds the time t d = 1.2 s in this case. Storage A failure in the break light circuit which is present for longer than t d is stored. A voltage of VBL /C0118 0.15 VS which is present at the input BL for longer than td leads to fault indication with storage. This allows the possibility of additional flashing monitoring. A voltage of V BL /C0119 0.2 VS and of VBL /C0118 0.65 VS which is present at the input BL for longer than td leads to fault indication without storage. It is thus possible to extend the scope of monitoring beyond 11 lamps by means of additional comparators ICs. A voltage of V BL /C0119 0.7 VS at the input BL does not cause a fault signal. The turn indicator and the brake light memory is maintained by VS (terminal 15) Power-on Reset When V Batt (terminal 15) is applied to Pin VS, a brief signal is produced which generates the power-on reset. As a result, the turn indicator, the brake light memory and the counters are reset. Outputs A fault signal at the comparators K1 to K8 or at the comparator Pin BL enables the output so that current I O can flow. The output blocking voltage (VS – Vout) is typically 1 V . Threshold Testing without Time Delay td To connect the input comparators directly to the output pin, a voltage of 6 V at Pin OSC is necessary (omit ROSC and COSC ). Absolute Maximum Ratings Parameters Symbol Value Unit Supply voltage V S, VBatt 16.5 V Pulse current (2 ms) IS 1.1 A Short circuit current (reversed battery) ISC 170 mA Output current Iout –12 mA Ambient temperature range Tamb –40 to +100 °C
Rev. A1, 22-Oct-97 5 (8) UnitValueSymbolParameters Storage temperature range Tstg –55 to +125 °C Junction temperature Tj 150 °C Thermal Resistance Parameters Symbol Value Unit Thermal resistance SDIP 28 R thJA 75 K/W
Electrical Characteristics
V Batt (Kl. 15) = 10 to 15 V , Tamb = –40 to +95/C0095C, supply series resistors and input protection resistors connected (see figure 1 “Block diagram” and figure 3 “Basic application schematic”) unless otherwise specified. Parameters Test Conditions / Pins Symbol Min. Typ. Max. Unit Supply Supply current V Batt = 12 V , Vout = low IS 6 mA Power on reset (POR) V S 3.5 5.2 V Comparators Comparator input current during switch over V Batt = 12 V Pin 2 Pin 4 Pin 6 Pins 15, 16 Pins 19, 21 Pins 22, 24 Pin 26 Pin 28 IK2 IK4 IK8 IK11,IK12 IK31,IK32 IK71 ,IK72 IK5 IK6 25 /C0109A Comparator output currentV Batt = 12 V Pin 1 Pin 3 Pin 5 Pin 7 Pin 15 Pin 20 Pin 23 Pin 27 IO6 IO2 IO4 IO8 IO1 IO3 IO7 IO5 –10 mA Comparator thresholds V thx = VREFKx – VExKx x = Pin–No. V Batt = 12 V V Batt = 15 V V thx V thx 5.0 6.3 10.0 11.4 15.0 16.5 mV mV Minimum comparator input voltage V minRef 0.33/C0032V S V Output Vout Pin 14 Output current V S = 12 V I14 –10.0 mA Output saturation voltageV sat = VS – Vout Iout = –10 mA V sat 1.5 V Protection V oltage of Zener diodes all REFKx and ExKx. pins Pin VS Pin BL Pin V stab and OSC V Z1 V Z2, V ZBL V Z3 V V V V Oscillator Pin 8 Oscillator frequency R osc = 82 k/C0087, C osc = 10 nF, fosc 1.67 kHz
Rev. A1, 22-Oct-97 6 (8) UnitMax.Typ.Min.SymbolTest Conditions / PinsParameters Delay time td 1.1 1.2 1.3 s Debounce time tdb 115 125 135 ms Flashing frequency recognition Pin BL Fault indication with stor- age V BL 0.15/C0032V S V Fault indication without storage V BL 0.2/C0032V S 0.6/C0032V S V No fault indication V BL 0.7/C0032V S V Input current V BL = low IBL –3.0 /C0109A Programming pin Pin SP Latch ON V SP 0.35/C0032V S V Latch OFF V SP 0.45/C0032V S V Input current V SP = 0 V ISP –6.0 /C0109A Input current V SP = 12 V ISP 300 /C0109A
Package Information
0.53 0.43 4.8 4.2 0.35 0.25 10.26 10.06 13044 1.778 3.3 0.9 8.7 8.5 12.2 11.0 Dimensions in mm 27.5 27.1 23.114 technical drawings according to DIN specifications
Rev. A1, 22-Oct-97 7 (8) 281 U2480B 1 kΩ 2 kΩ 2 kΩ 2 kΩ 2 kΩ 1 kΩ 2 kΩ 2 kΩ 1 kΩ 2 kΩ 2 kΩ 2 kΩ 2 kΩ 2 kΩ 2 kΩ Stop light (3x 21 W) Park light additional park light (6x 4 W) Dipped headlight (2x 55 W) V Batt V BattRosc Cosc Failure without storage 2 kΩ 281 U2480B NC NC 1 kΩ 2 kΩ 2 kΩ NC 2 kΩ 2 kΩ 2 kΩ 2 kΩ 2 kΩ 2 kΩ 2 kΩ 2 kΩ 2 kΩ NC V Batt V Batt Headlight additional headlight (2x 55 W) Fog lamp (2x 55 W) V Batt License plate and side lamps (4x 4 W) V Batt 2 kΩ 1 kΩ 2 kΩ 2 kΩ 2 kΩ*) Kl 31 Failure with storage Indicator control BL Open: Store ”on” SP Charge control Marker light V Batt Reversing light (2x 21 W) Fog tail lamp V Batt High: Store ”off” V Batt 13911 *) Shunt
Rev. A1, 22-Oct-97 8 (8) 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