User Guide
41
Power
The following shows a typical logic and output power connection:
Internal to product
Reverse Battery
Protection
Power
Control
Ground Pins
Battery
Fuse Max
25 A
Power Pins
Fuse Min
200 mA
Figure 18: Logic and output power installation connections
5.2. Sensor supply
The VMM3120 has one pin, labeled
SENSOR_SUPPLY
, dedicated to providing
power to external sensor.
Warning!
Do not drive more than 300 mA of current through the
SENSOR_SUPPLY
pin. Doing so will cause the pin to protect itself by
dropping the voltage, which will result in a lack of power to the sensors,
causing unknown vehicle responses.
5.2.1. Sensor Power Capabilities
The
SENSOR_SUPPLY
offers two software programmable output voltages of either
5 V or 8 V. It is a switching regulator that supplies a high output current that does
not have to be de-rated when used on 24V systems.
Note:
The voltage provided to the VMM3120 must be 7 V or greater to ensure
that the
SENSOR_SUPPLY
can provide 5 V. The voltage provided to the product
must be 10 V or greater to ensure the sensor supply can provide 8 V.
Summary of Contents for VMM3120
Page 1: ...Vansco Multiplexing Module VMM3120 User Guide HY33 5004 IB US UG VMM3120 0916014 201705 002...
Page 10: ......
Page 14: ...4 VMM3120 About the VMM3120 Symbol Meaning Fuse Resistor Ground Chassis ground...
Page 89: ...User Guide 79 Glossary...
Page 92: ...Vansco Multiplexing Module VMM3120 User Guide HY33 5004 IB US...
