器件名称: U2482B
功能描述: Automotive Lamp Outage Monitor
文件大小: 151.88KB 共11页
简 介:are designed to monitor automotive illumination by sensing the voltage drop across shunt resistors. 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. As a special feature for brake lamp monitoring, the U2481B contains a latch stage connected to one of its triple comparators.
– 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. 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 layout
Applications
Both ICs can be used in any kind of vehicle with a 12 V supply. It is sufficient to insert small resistors into the lamp wiring and to provide the dashboard instrument cluster with a pilot lamp. T……
