JAJSVB5 September 2024 TIOL221
ADVANCE INFORMATION
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In the pin-mode, the current limit of CQ and DO can be configured with an external resistor on the ILIM_ADJ1 and ILIM_ADJ2 pins respectively. The highest current limit setting with an external resistor of 10kΩ provides a minimum of 300mA over the operating temperature and voltage range. Refer to Table 7-2 for the pin-mode configuration of the CQ and DO drivers.
Output disable due to current fault and current fault auto recovery features can be disabled by floating ILIM_ADJ1/2 pins. However, the current fault indication is still active in this configuration. This feature is useful when driving large capacitance.
When ILIM_ADJ1/2 pins are shorted to ground, the CQ and the DO drivers can configured to be in the IO-link controller mode. In this mode, the drivers can source or sink minimum of 500mA to generate a wake-up request. In addition, drivers enable a small current sink of 5mA (minimum) at the driver output pins. The current fault indication, output disable, and auto recovery features are disabled in this mode.
ILIM_ADJ1/2 Pin Condition | CQ/DO Current Limit (Min.) | NFLT1/2 Indication Due to Current Fault | Current Fault Blanking Time (tSC) | Output Disable and Auto Recovery |
---|---|---|---|---|
RSET resistor to L- (10kΩ to 110kΩ) | Variable (35mA to 300mA) | Yes | 200µs (typ) | Yes |
Connected to L- (RSET 0 to 5kΩ) | 500mA | No | N/A | No |
OPEN | 260mA | Yes | None (immediate fault indication) | No |