概览
优势和特点
- +9V to +70V Operating Supply Range
- 5V / 50mA Integrated Linear Regulator
- -40°C to +125°C Ambient Temperature Operating Range
- 16-TQFN Package, 3mm x 3mm, 0.5mm Pin Pitch
- Robust Design Features
- Ultra High-Speed Inductive Load Turn-Off by Clamping to -70V
- Supply Independent Inductive Clamping
- Support of Low RON FETs Having Qg (Total) = 50nC
- External FET Turn-On Propagation Delay < 20μs
- Active Current Limit Control During Overcurrent
- Fault Monitoring Diagnostic Features
- Overcurrent Detect Output
- High Supply-Voltage Indication
- Flexible Supply or Load Voltage Monitor
- Undervoltage Lockout
- Thermal Warning and Shutdown Protection
- Device Ready Indication
产品详情
The MAX14922 is a high-side, n-channel FET controller for implementing industrial high-side switches for switching ground-connected loads. The MAX14922 device controls an external nMOS power transistor, allowing low RON high-side switch applications from a +9V to +70V supply range.
Fast inductive load turn-off can be achieved with use of a high-voltage TVS diode enabling up to -70V (max) voltage clamping. Ground-connected TVS diodes allow clamping of exceptionally high inductive energies. Load current is limited to a user-defined value through a sense resistor. External FET overload protection is achieved using an auto-retry timing feature, as defined by a user-selected capacitor (CBLANK at tBLANK input) or optionally using an external timing control. The MAX14922 features an on-chip comparator enabling monitoring of the high-side switch output or the supply input voltage with a user-selected threshold. An integrated charge pump enables high speed switching rates when using low RON FETs in the 20kHz to 50kHz range. The MAX14922 is available in a 3mm x 3mm, 16-TQFN package. The MAX14922 device is specified over the -40°C to +125°C operating temperature range.Applications
- Industrial Digital Outputs
- High-Side Switches
- Motor Holding Brakes
- Relay and Solenoid Drivers
产品生命周期
量产
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参考资料
设计资源
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