- support@husseinkey.com
- livechat
Analog Devices MAX14922 High-Side Switch Controller is an N-channel FET controller for implementing a high-side switch that operates as an industrial digital output. The MAX14922 is specified for operation with supplies up to 70V. The controller features accurate, active current-limiting, with current defined by the RS sense resistor connected between the VDD and SNS inputs. The device is used with an external low RON FET, which acts as a load switch for industrial loads. High inductive clamping voltages can be achieved by connecting an external ground-connected TVS diode to the MAX14922 S input. The device features diagnostics such as load or supply-voltage monitoring, gate output ready, high voltage-supply indication, current limiting, current limit auto-retry timing, and overcurrent indication.
The MAX14922 features integrated diagnostics, enabling monitoring and control of vital parameters in the application. In case of load faults, damaged FET, short-circuit conditions, and unwanted high ambient temperature, the device features logic outputs that alert the controller to force an appropriate response to ensure the safety and reliability of the application. In cases when the diagnostic outputs are not required, the outputs can either be left unconnected or connected to the ground.
The integrated comparator input COMP allows monitoring of any voltage in the system, for example, the VDD supply voltage or the source voltage of the external FET. The internal comparator compares the COMP input voltage with a 1V (typical) internal reference. The inverse logic is presented on the LO logic output. Connect a resistive voltage divider between the S or VDD input to set the threshold voltage.
The Analog Devices MAX14922 High-Side Switch Controller is available in a 3mm x 3mm, TQFN16 package. This RoHS-compliant device is specified over the -40°C to +125°C operating temperature range.
