Overcurrent (Ocd) Threshold Setting (L6206 And L6226); Table 2. Arduino Uno R3 Connector Table (L62X8 Devices); Figure 3. L6206: Overcurrent Threshold Vs. Resistor Value (No Paralleling) - STMicroelectronics L62 Series User Manual

Connector
CN5
CN9
CN8
CN6
1. All non-listed pins are not connected.
2.1

Overcurrent (OCD) threshold setting (L6206 and L6226)

The plug-in boards based on L6206 and L6226 devices integrate two overcurrent protection circuits with
adjustable threshold, one for each full-bridge.
The overcurrent threshold is set by means of R7 (bridge A) and R8 (bridge B) resistors of the main board,
according to Figure
Below the value of R
selected device, 5.6 A±30% for L6206 and 2.8 A±30% for L6226.
UM2871 - Rev 1
Table 2. Arduino UNO R3 connector table (L62x8 devices)
(1)
Pin
1
3
4
5
7
5
6
7
1
2
3
4
2
6
7
3.
= 5 kΩ the overcurrent threshold converges non-linearly to the maximum value of the
CL
Figure 3. L6206: Overcurrent threshold vs. resistor value (no paralleling)
6
5
4
I
SOVER
3
[A]
2
1
0
5 6
Overcurrent (OCD) threshold setting (L6206 and L6226)
Signal
Reset
Fault
Enable
ADC-6
Ground
HALF/FULL
CONTROL
VREFA
CLOCK
CW/CCW
ADC-4
VREFB
VDD
Ground
Ground
7 8
R [Ω]
CL
UM2871
Remarks
9 10
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