EVB10801 Melexis Company, EVB10801 Datasheet - Page 3

• Manufacturer Part Number: EVB10801
• Description: Evaluation Board Evb10801 Power Led Driver For Automotive Applications
• Manufacturer: Melexis Company

7.
For normal operation only the following connections are necessary. It is not recommended to use the
connector J2 (VS, Pin1) for supplying the board as there is no reverse polarity diode on that pin.
The LED is connected to the board via a polarised plug to avoid incorrect connection.
8.
For details on the function of the LED driver circuit, please refer to the MLX10801 IC specification.
Supply voltage (6..28V DC) is applied to J1, Pin3 while Pin4 is the corresponding GND connection. The LEDs have
to be connected to J3, anode to LED+ (Pin3), Cathode to LED- (Pin1). Pin2 (GND) can optionally be used to shield
LED signals if desired.
Dimming can be achieved via the digital input CNTR that is accessible via J1 (Pin1). The Jumper JMP2 must be
removed (it is set by default) for PWM dimming. Any TTL input signal with a frequency of 30Hz..4kHz can be used
as PWM input.
In order to avoid destruction of the IC and/or the LED due to overheating, a temperature shut off
was implemented. Generally there are two different modes for temperature sensing, internal
and external. For details please refer to the MLX10801 IC specification.
The evaluation board contains of a temperature sensor (diode BAS16) on-board. In case a direct temperature
sensing of the LED is desired, an external temperature sensor (Dext) can be placed close to the LED.
390121080102 Rev. 004
Author: SSZ
Figure 3: Minimal board connections
Minimal Board Connections
Description
8.1.
8.2.
8.3.
General
Dimming via PWM
Temperature Sensing
Evaluation board EVB10801
Power LED driver for automotive applications
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16/Mar/06