TEMIC Semiconductors U2481B
The U2481B and the U2482B multicomparator circuits are designed to monitor automotive illumination by sensing the voltage drop across shunt resistors. With – 4 single comparators – 1 double comparator and – 2 triple comparators each of the integrated circuits monitors up to 12 lamps and up to 6 fuses. As a special feature for brake lamp monitoring, the U2481B contains a latch stage connected to one of its triple comparators.| Part No. | U2481B |
|---|---|
| Datasheet | U2481B Download |
| Manufacturer |  TEMIC Semiconductors |
| Description | Automotive Lamp Outage Monitor |
| Buy | Stock & Price |
DESCRIPTION
Provided with extremely low comparator thresholds, these ICs can be used together as a chip set to build an entire lamp monitor system. Single operation of both circuits is also possible. All comparator stages are combined together to control the common output stage.FEATURES
D Extremely low comparator thresholds of typically 3.5 mV D Internal compensation for copper shunts D Internal compensation for voltage-dependent bulb characteristic D Comparator input voltage may exceed supply voltage D Internal protection measures for pulses according to ISO TR 7637/1 D ESD 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) Benefits D Extremely low threshold voltage gives low voltage drop via shunt resistor. Power dissipation of the lamp monitor module is minimized D Perfect EMC in conjunction with an appropriate pc board layoutAPPLICATIONS
Both ICs can be used in any kind of vehicle with a 12 V supply.
