ZXMS81045SPQ Datasheet | Diodes Incorporated

Description The ZXMS81045SPQ is a single-channel, high-side, power switch in a SO-8EP (Type E) exposed heatsink package incorporating protective and diagnostic functions. Pin Assignment (Top View) The device prises 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. VS (EP) 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. SO-8EP Features Protection Functions - Reverse battery protection using external ponents - 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 ponents - 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 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 - pact low-power replacement for: - Relays, fuses, and discrete circuits Summary Specifications Operating voltage Maximum supply voltage Maximum ON resistance, Tj = 150°C Nominal load current Typical current sense ratio Minimum current limitation Maximum standby current, Tj = 25°C VS VS(LD) RDS(ON) IL(NOM) KILIS...