(ACTIVE) 40-V, 100-mOhm Single-Channel Smart High-Side Switch


Functional diagram


The TPS27S100x is a single-channel, fully-protected, high-side switch with an integrated NMOS and charge pump. Full diagnostics and high-accuracy current-monitor features enable intelligent control of the load. An adjustable current-limit function greatly improves the reliability of the whole system. The device diagnostic reporting has two versions to support both digital fault status and analog current monitor output. Accurate current monitor and adjustable current limit features differentiate it from the market.


  • 80-mΩ Single-Channel High-Side Switch With Full Diagnostics
    • TPS27S100A: Open-Drain Status Output
    • TPS27S100B: Current Monitor Analog Output
  • Wide Operating Voltage 3.5 V to 40 V
  • Very-Low Standby Current, <0.5 µA
  • Operating Junction Temperature, –40 to 150°C
  • Input Control, 3.3-V and 5-V Logic Compatible
  • High-Accuracy Current Monitor, ±30 mA at 1 A
  • Adjustable Current Limit With External Resistor, ±20% at 0.5 A
  • Diagnostic Enable Function for Multiplexing of MCU Analog or Digital Interface
  • Excellent ESD Protection on IN and OUT pins
    • ±16 kV IEC 61000-4-2 ESD Contact Discharge
    • ±4 kV IEC 61000-4-4 Electrical Fast Transient
    • ±1.0 kV/42 Ω IEC 61000-4-5 Surge
  • Protection
    • Overload and Short-Circuit-to-GND Protection
    • Inductive Load Negative Voltage Clamp
    • Undervoltage Lockout (UVLO) Protection
    • Thermal Shutdown/Swing With Self Recovery
    • Loss of GND Protection
  • Diagnostic
    • On- and Off-State Output Open-Load / Short to Supply Detection
    • Overload and Short to Ground Detection
    • Thermal Shutdown/Swing Detection
  • 14-Pin Thermally-Enhanced PWP Package

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VCC (Min) (V) 3.5   
VCC (Max) (V) 40   
Driver Configuration High Side   
Ron @ 150C (Typ) (mOhms) 166   
Ron @ 25C (Typ) (mOhms) 80   
Input Threshold CMOS^TTL   
Soft Start None   
Shutdown Current (ISD) (Typ) (uA) 2   
Current Limit Type Adjustable   
Features Current Sense Output^Digital Output^Programmable Current Limit^Thermal Shutdown^Under Voltage Lock Out   
UL Recognition None   
Overvoltage Protection None   
Rating Catalog   
Operating Temperature Range (C) -40 to 125   
Pin/Package 14HTSSOP   
Number of Channels (#) 1   
Current Limit Accuracy +/-20% @ 0.5A   
Current Sense Accuracy ±30mA @ 1A,  ±3mA @ 25mA   

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Datasheet (1)

Application notes (1)

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