Diodes Incorporated
SO 14 Type A1

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IntelliFET High-Side Power Switch

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The ZXMS82120S14PQ is a dual-channel, high-side power switch in a SO-14EP 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.


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
    • Channel Selected 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


  • Lead-Free Finish; RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • The ZXMS82120S14PQ 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/


  • High-side switching with diagnostic feedback for:
    • 12V grounded loads
    • Resistive, inductive and capacitive loads
  • Suitable for high inrush current loads
    • Incandescent lamps (P10W), motors, LEDs, etc.
  • Compact low power replacement for:
    • Relays, fuses and discrete circuits

Product Specifications

Product Parameters

AEC Qualified Yes
Compliance (Only Automotive supports PPAP) Automotive
Channels 2
RDS(ON)  Typ. @TJ= 25°C  (mΩ) 100
RDS(ON)  Max  @TJ= 150°C  (mΩ) 240
IL(NOM)  (A) 2.5
IL (SC) Min (A) 10
KILIS Current Sense Ratio 550
Recommended Operating Voltage Max (V) 18
PTOT  Max  (W) 1.8
Operating Temp Min (°C) -40
Operating Temp Max (°C) 150
Turn-OFF Time Max (µs) 230
Turn-ON Time Max (µs) 230

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