TPS27S100 40-V, 100-mΩ, 1-ch smart high-side switch with adjustable current limit |

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40-V, 100-mΩ, 1-ch smart high-side switch with adjustable current limit



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 (0.5-A to 6-A) 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 and 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 and swing detection
  • Thermally-Enhanced 14-Pin PWP or 16-Pin QFN package

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Part number Order Approx. price (US$) Driver configuration Current limit (Min) (A) Current limit accuracy Current limit type Current sense accuracy Features HBM ESD (kV) Input threshold
TPS27S100 Order now 0.70 | 1ku     High Side     7     +/-20% @ 0.5A     Adjustable     +/-30mA @ 1A
3mA @ 25mA    
Current Sense Output
Programmable Current Limit
Thermal Shutdown
Under Voltage Lock Out    
4     CMOS