Product details

Vin (Min) (V) 2.5 Vin (Max) (V) 6.5 Continuous current (Max) (A) 1.1 Current limit (A) 0.1 to 1.1 Product type Adjustable current limit, Power switch Operating temperature range (C) -40 to 125 Enable Active High Number of switches 1 Rating Automotive
Vin (Min) (V) 2.5 Vin (Max) (V) 6.5 Continuous current (Max) (A) 1.1 Current limit (A) 0.1 to 1.1 Product type Adjustable current limit, Power switch Operating temperature range (C) -40 to 125 Enable Active High Number of switches 1 Rating Automotive
SOT-23 (DBV) 6 5 mm² 2.9 x 1.6
  • Qualified for Automotive Applications
  • Adjustable Current-Limit: 100 mA to 1100 mA
  • Fast Overcurrent Response: 2 µs (Typ)
  • 85-m High-Side MOSFET
  • Reverse Input-Output Voltage Protection
  • Operating Range: 2.5 V to 6.5 V
  • Deglitched Fault Report
  • 1-µA Maximum Standby Supply Current
  • Junction Temperature Range: –40°C to 125°C
  • Built-in Soft-Start
  • 15-kV ESD Protection (With External Capacitance)
  • APPLICATIONS
    • USB Ports/Hubs
    • Cell Phones
    • Laptops
    • Heavy Capacitive Loads
    • Reverse-Voltage Protection

  • Qualified for Automotive Applications
  • Adjustable Current-Limit: 100 mA to 1100 mA
  • Fast Overcurrent Response: 2 µs (Typ)
  • 85-m High-Side MOSFET
  • Reverse Input-Output Voltage Protection
  • Operating Range: 2.5 V to 6.5 V
  • Deglitched Fault Report
  • 1-µA Maximum Standby Supply Current
  • Junction Temperature Range: –40°C to 125°C
  • Built-in Soft-Start
  • 15-kV ESD Protection (With External Capacitance)
  • APPLICATIONS
    • USB Ports/Hubs
    • Cell Phones
    • Laptops
    • Heavy Capacitive Loads
    • Reverse-Voltage Protection

The TPS2551 power-distribution switch is intended for applications in which heavy capacitive loads and short circuits are likely to be encountered, incorporating a 100-m, N-channel MOSFET in a single package. The current-limit threshold is user adjustable between 100 mA and 1.1 A via an external resistor. The power-switch rise and fall times are controlled to minimize current surges during switching.

The device limits the output current to a desired level by switching into a constant-current mode when the output load exceeds the current-limit threshold or a short is present. An internal reverse-voltage detection comparator disables the power-switch in the event that the output voltage is driven higher than the input to protect devices on the input side of the switch. The FAULT logic output asserts low during both overcurrent and reverse-voltage conditions.

The TPS2551 power-distribution switch is intended for applications in which heavy capacitive loads and short circuits are likely to be encountered, incorporating a 100-m, N-channel MOSFET in a single package. The current-limit threshold is user adjustable between 100 mA and 1.1 A via an external resistor. The power-switch rise and fall times are controlled to minimize current surges during switching.

The device limits the output current to a desired level by switching into a constant-current mode when the output load exceeds the current-limit threshold or a short is present. An internal reverse-voltage detection comparator disables the power-switch in the event that the output voltage is driven higher than the input to protect devices on the input side of the switch. The FAULT logic output asserts low during both overcurrent and reverse-voltage conditions.

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Technical documentation

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* Data sheet Adjustable Current-Limited Power Distribution Switch datasheet 24 Jun 2008
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021

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