TLV1805 40 V High-Voltage Comparator

By Texas Instruments 165

TLV1805 40 V High-Voltage Comparator

Texas Instruments' TLV1805 high-voltage comparator offers the unique combination of a wide supply range, push-pull output, rail-to-rail inputs, low quiescent current, shutdown capability, and fast output response. These features make this comparator well-suited for applications that require sensing at the positive or negative voltage rails such as reverse current protection for smart diode controllers, overcurrent sensing, and overvoltage protection circuits where the push-pull output stage is used to drive the gate of a p-channel or an n-channel MOSFET switch.

The high peak current push-pull output stage, which is unique for high-voltage comparators, offers the advantage of allowing the output to actively drive the load to either supply rail with a fast edge rate. This is valuable in applications where a MOSFET gate needs to be driven high or low quickly in order to connect or disconnect a host from an unexpected high voltage supply. The TLV1805 device features low input-offset voltage, low input-bias currents, and high-Z shutdown making it flexible enough to handle a broad range of applications. Power-on reset (POR) prevents false outputs at power-up.

The TLV1805 is housed in a 6-pin SOT-23 package and is specified for operation across the extended industrial temperature range of -40°C to +125°C.

  • Supply range: 3.3 V to 40 V
  • Low quiescent current: 135 µA
  • High peak current push-pull output
  • Rail-to-rail inputs with phase reversal protection
  • Built-in hysteresis: 14 mV
  • Propagation delay: 250 ns
  • Low input-offset voltage: 500 µV
  • Shutdown with high-Z output
  • POR
  • Package: SOT-23-6
  • Reverse current protection smart diode controllers
  • Overvoltage, undervoltage, and overcurrent detection
  • OR-ing MOSFET controllers
  • MOSFET gate drivers
  • High-voltage oscillators
  • System monitoring for:
    • Infotainment and clusters
    • PLCs
    • Servers
    • Motor protection and controls

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