Diodes IncorporatedZXMS81200SPQ-13Strombegrenzungsschaltern

Automotive-Compliant IntelliFET® High-Side Power Switch

The ZXMS81200SPQ is a single-channel, high-side power switch in a SO-8EP (Type E) exposed heatsink package incorporating protective and diagnostic functions.

The device comprises a monolithic n-channel vertical power MOSFET with integrated temperature and current sensors with a charge-pumped gate supply and has a low quiescent current in OFF state. The device is enabled by active high 3.3V and 5V logic-level drive to the inputs.

The device includes a diagnostic current-sense output proportional to load current and a defined diagnostic fault signal in case of overload operation, overtemperature, short-circuit or open-load conditions.

Key Features and Benefits

• •  Protection Functions
• •  Reverse Battery Protection Using External Components
• •  Voltage Dependent Current Limiting
• •  Overtemperature Protection with Auto-Restart
• •  Overvoltage Protection Including Load Dump
• •  Stable Undervoltage Protection
• •  ESD Protection
• •  Loss of Ground Protection with External Components
• •  Enhanced Short-Circuit Protection

• •  Diagnostic Functions
• •  Proportional Load Current-Sense Output
• •  Linear Voltage Drop Regulation to Maintain Sense Accuracy Even at Very Low Load Currents
• •  Enabled by Logic Input
• •  Defined Temperature and Current Dependency
• •  Open-Load Detection
• •  Using Load Current-Sense in ON State
• •  Using Output Voltage Detection in OFF State
• •  Defined Fault Signal in Case of Overload Operation, Overtemperature, or Short-Circuit and Open-Load in OFF State

Applications

• •  High-side switching with diagnostic feedback for:
• •  12V grounded loads
• •  Resistive, inductive, and capacitive loads
• •  Suitable for high inrush current loads
• •  Incandescent lamps (P27W/P21W), motors, etc
• •  Compact low-power replacement for:
• •  Relays, fuses, and discrete circuits

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