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TELEFUNKEN Semiconductors

U2481B/ U2482B

Automotive Lamp Outage Monitor

Description

The U2481B and the U2482B multicomparator circuits

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.

With

鈥?4 single comparators

鈥?1 double comparator and

鈥?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

鈥?Human body model:

4 kV

鈥?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. These ICs increase the safety

and add comfort features.

Rev. A1: 21.08.1995

Preliminary Information

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U2482B相關(guān)型號(hào)PDF文件下載

• 型號(hào)
  版本
  描述
  廠商
  下載
• U2480B
  英文版
  Automotive Lamp Outage Monitor
  TEMIC
  U2480B
• U2480B
  英文版
  Automotive Lamp Outage Monitor
  TEMIC [TEM...
  U2480B
• U2481B
  英文版
  Automotive Lamp Outage Monitor
  ETC
  U2481B
• U2481B
  英文版
  Automotive Lamp Outage Monitor
  ETC [ETC]
  U2481B
• U2482B
  英文版
  Automotive Lamp Outage Monitor
  ETC
  U2482B
• U2482B
  英文版
  Automotive Lamp Outage Monitor
  ETC [ETC]
  U2482B

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