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Precison Automotive Adjusable Current-Limited Power-Distribution Switch


Package | PIN: DRB | 8
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $2.00
10-24 $1.80
25-99 $1.68
100-249 $1.47
250-499 $1.38
500-749 $1.17
750-999 $0.99
1000+ $0.94


  • AEC-Q100 Qualified
    • Device HBM ESD Classification Level
    • Device CDM ESD Classification Level C5
  • Meets USB Current-Limiting Requirements
  • Adjustable Current Limit, 500 mA–5 A (Typ.)
  • ±6.5% Current-Limit Accuracy at 4.5 A
  • Fast Short-Circuit Response – 3.5-µs (Typ.)
  • 22-mΩ High-Side MOSFET
  • Operating Range: 2.5 V to 6.5 V
  • 2-µA Maximum Standby Supply Current
  • Built-In Soft-Start
  • 15-kV and 8-kV System-Level ESD Capable


    Automotive USB Charging Ports

Texas Instruments  TPS2557QDRBRQ1

The TPS2556-Q1 and TPS2557-Q1 power-distribution switches are specialized for automotive applications which require precision current limiting or capacity to handle heavy capacitive loads and short circuits. These devices offer a programmable current-limit threshold between 500 mA and 5 A (typical) via an external resistor. Control of the power-switch rise and fall times minimizes current surges during turnon or turnoff.

TPS2556-Q1 and TPS2557-Q1 devices limit the output current to a safe level by switching into a constant-current mode when the output load exceeds the current-limit threshold. The FAULT logic output asserts low during overcurrent and overtemperature conditions.

Use with the TPS2511-Q1 or TPS2513A-Q1 for a low-loss, automotive-qualified, USB charging-port solution capable of charging all of today’s popular phones and tablets.