TPS2552 Adjustable, Active Low, Constant-Current, Current-Limited Power-Distribution Switch | TI.com

TPS2552 (ACTIVE)

Adjustable, Active Low, Constant-Current, Current-Limited Power-Distribution Switch

Adjustable, Active Low, Constant-Current, Current-Limited Power-Distribution Switch - TPS2552
 

Recommended alternative parts

  • TPS2552D  -  For cost-constrained applications, try the TPS2552D.

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

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Parametrics Compare all products in Precision Adjustable Limit Switch

 
Vin (Min) (V)
Vin (Max) (V)
Number of Switches
rDS(on) per FET (Typ) (mOhms)
Continuous Current (Max) (A)
Current Limit (A)
Current Limit Accuracy @ 1A
Enable
Current Limit Topology
Rating
Operating Temperature Range (C)
Pin/Package
TPS2552 TPS2552-1 TPS2553 TPS2553-1
2.5     2.5     2.5     2.5    
6.5     6.5     6.5     6.5    
1     1     1     1    
100/DRV
85/DBV    
100/DRV
85/DBV    
100/DRV
85/DBV    
100/DRV
85/DBV    
1.5     1.5     1.5     1.5    
0.075 to 1.7     0.075 to 1.7     0.075 to 1.7     0.075 to 1.7    
+/-7.5% (925mA min / 1075mA max)     +/-7.5% (925mA min / 1075mA max)     +/-7.5% (925mA min / 1075mA max)     +/-7.5% (925mA min / 1075mA max)    
Active Low     Active Low     Active High     Active High    
Constant-Current     Latch Off     Constant-Current     Latch Off    
Catalog     Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85     -40 to 85    
6SOT-23
6WSON    
6SOT-23
6WSON    
6SOT-23
6WSON    
6SOT-23
6WSON