L9826 STMicroelectronics, L9826 Datasheet - Page 15

• Manufacturer Part Number: L9826
• Description: IC DRIVER OCTAL LOW SIDE SOIC-20
• Manufacturer: STMicroelectronics
• Type: Low Sider

Specifications of L9826

• Input Type: SPI
• Number Of Outputs: 8
• On-state Resistance: 1.5 Ohm
• Current - Peak Output: 1.1A
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Supply Voltage (min): 4.5 V
• Supply Current: 5 mA
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Number Of Drivers: 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output / Channel: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

L9826
5.3.1
5.3.2
Diagnostic on Outputs 1 and 2 controlled via NON1/NON2
Fault condition (1) "output shorted to Vbat"
The output has been previously switched-on and its voltage exceeds the diagnostics
threshold. It operates in current regulation mode or it is switched-off if thermal shutdown
threshold (T
Fault condition (2) "open load" or "output shorted to GND"
The output is switched-off and its voltage drops below the diagnostics threshold because
the load current is lower than the output diagnostic current source. The diagnostic bit is low.
Table 8.
Diagnostic on Outputs 1 to 8 controlled via SPI
Fault condition (1) "output shorted to Vbat"
The output was previously switched-on, its voltage exceeds the diagnostic threshold and the
result is that the output is switched-off. The diagnostic bit is high.
Fault condition (2) "open load" or "output shorted to GND"
It is the same behavior explained for the outputs 1 and 2 (see paragraph 5.3.1), at NCS
falling edge the output status data are transferred to the shift register.
Table 9.
Load diagnostic: when the output is in OFF condition a typical diagnostic current of 60 µA is
sinked.
Output 1 ... 8
Output 1, 2
off
off
on
on
off
off
on
on
JSC
Diagnostic table for outputs 1 and 2 in parallel controlled mode
Diagnostic table for outputs 1 to 8 in SPI controlled mode
) is reached. The status bit is low.
Output-voltage
Output-voltage
> DG-threshold
< DG-threshold
< DG-threshold
> DG-threshold
> DG-threshold
< DG-threshold
< DG-threshold
> DG-threshold
Doc ID 7214 Rev 9
Status-bit
Status-bit
high
high
high
high
low
low
low
low
Functional description
correct operation
correct operation
correct operation
correct operation
fault condition 2)
fault condition 1)
fault condition 2)
fault condition 1)
Output-mode
Output-mode
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