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

 

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 USB power switches & charging port controllers

 
Vin (Min) (V)
Vin (Max) (V)
Approx. price (US$)
Continuous current (Max) (A)
Current limit (A)
Current limit accuracy @ 1 A
Current limit topology
Enable
Number of switches
Operating temperature range (C)
Package Group
Package size: mm2:W x L (PKG)
Rating
rDS(on) per FET (Typ) (mOhms)
TPS2552 TPS2552-1 TPS2553 TPS2553-1
2.5     2.5     2.5     2.5    
6.5     6.5     6.5     6.5    
0.70 | 1ku     0.70 | 1ku     0.70 | 1ku     0.70 | 1ku    
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)    
Constant-Current     Latch Off     Constant-Current     Latch Off    
Active Low     Active Low     Active High     Active High    
1     1     1     1    
-40 to 85     -40 to 85     -40 to 85     -40 to 85    
SOT-23 | 6
WSON | 6    
SOT-23 | 6
WSON | 6    
SOT-23 | 6
WSON | 6    
SOT-23 | 6
WSON | 6    
6SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 6)
See datasheet (WSON)    
6SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 6)
See datasheet (WSON)    
6SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 6)
See datasheet (WSON)    
6SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 6)
See datasheet (WSON)    
Catalog     Catalog     Catalog     Catalog    
100/DRV
85/DBV    
100/DRV
85/DBV    
100/DRV
85/DBV    
100/DRV
85/DBV