TPS2552-1 Adjustable, Active Low, Latch-off, Current-Limited Power-Distribution Switch | TI.com

TPS2552-1 (ACTIVE) Adjustable, Active Low, Latch-off, Current-Limited Power-Distribution Switch

 

Description

The TPS255x and TPS255x-1 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 (typical) through 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 turnon and turnoff.

TPS255x devices limit the output current to a safe level by using a constant-current mode when the output load exceeds the current-limit threshold. TPS255x-1 devices provide circuit breaker functionality by latching off the power switch during overcurrent or reverse-voltage situations. 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.

Features

  • Up to 1.5-A Maximum Load Current
  • ±6% Current-Limit Accuracy at 1.7 A (Typical)
  • Meets USB Current-Limiting Requirements
  • Backwards Compatible With TPS2550 and TPS2551
  • Adjustable Current Limit: 75 mA to 1700 mA (Typical)
  • Constant-Current (TPS255x) and Latch-Off (TPS255x-1) Versions
  • Fast Overcurrent Response - 2 µs (Typical)
  • 85-mΩ High-Side MOSFET (DBV Package)
  • Reverse Input-Output Voltage Protection
  • Operating Range: 2.5 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

Parametrics

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Part number Order Vin (Min) (V) Vin (Max) (V) Continuous current (Max) (A) Current limit (A) Enable Number of switches Rating
TPS2552-1 Order now 2.5     6.5     1.5     0.075 to 1.7     Active Low     1     Catalog    
TPS2552 Order now 2.5     6.5     1.5     0.075 to 1.7     Active Low     1     Catalog    
TPS2553 Order now 2.5     6.5     1.5     0.075 to 1.7     Active High     1     Catalog    
TPS2553-1 Order now 2.5     6.5     1.5     0.075 to 1.7     Active High     1     Catalog