ZXMS81045SPQ

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.

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.

IntelliFET® is a registered trademark of Diodes Incorporated.

Feature(s)

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

Miscellaneous

• Lead-Free Finish; RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
• The ZXMS81045SPQ is suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF16949 certified facilities. https://www.diodes.com/quality/product-definitions/

Application(s)

• 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