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Precision Adjustable Current-Limited Power Distribution Switches

Availability: 39,131


Package | PIN: SOT-23 (DBV) | 6
Temp: Q (-40 to 125)
Package qty | Carrier: 3,000 | LARGE T&R
Custom reel may be available
Qty Price
1-99 $0.60
100-249 $0.51
250-999 $0.34
1,000+ $0.24


  • Up to 1.5 A Maximum Load Current
  • ±6% Current-Limit Accuracy at 1.7 A (Typ)
  • Meets USB Current-Limiting Requirements
  • Backwards Compatible with TPS2550/51
  • Adjustable Current Limit, 75 mA–1700 mA (Typ)
  • Constant-Current (TPS2552D and TPS2553D)
  • TPS2552D (Enable Low) and TPS2553D (Enable High)
  • Fast Overcurrent Response - 2 µs (Typ)
  • 85-mΩ High-Side MOSFET (DBV Package)
  • Reverse Input-Output Voltage Protection
  • Operating Range: 2.7 V to 6.5 V
  • Built-in Soft-Start
  • 15 kV ESD Protection per IEC 61000-4-2 (With External Capacitance)
  • UL Listed – File No. E169910 and NEMKO IEC60950-1-am1 ed2.0
  • See the TI Switch Portfolio

Texas Instruments  TPS2553DDBVR

The TPS2552D and TPS2553D power-distribution switches are intended for applications where precision current limiting is required or heavy capacitive loads and short circuits are encountered and provide up to 1.5 A of continuous load current. These devices offer a programmable current-limit threshold between 75 mA and 1.7 A (typ) via an external resistor. Current-limit accuracy as tight as ±6% can be achieved at the higher current-limit settings. The power-switch rise and fall times are controlled to minimize current surges during turn on/off.

The TPS2552D/3D devices limit the output current to a safe level by using a constant-current mode when the output load exceeds the current-limit threshold. An internal reverse-voltage comparator disables the power-switch when the output voltage is driven higher than the input to protect devices on the input side of the switch. The FAULT output asserts low during overcurrent and reverse-voltage conditions.