TPS25221 Precision Adjustable Current-Limited Power-Distribution Switches | TI.com

TPS25221 (ACTIVE)

Precision Adjustable Current-Limited Power-Distribution Switches

Precision Adjustable Current-Limited Power-Distribution Switches - TPS25221
 

Description

The TPS25221 is intended for applications where heavy capacitive loads and short circuits may be encountered. The programmable current-limit threshold maybe set between 275 mA and 2.7 A (typical) using an external resistor. ILIMIT accuracy as tight as ±6% can be achieved at the higher current-limit settings. Power-switch rise and fall times are controlled to minimize current surges during turn on and turn off.

When a load attempts to draw current exceeding the programmed ILIMIT the internal FET enters constant current mode in order to keep ILOAD at or below ILIMIT. The FAULT output will assert low during over-current conditions after the built in de-glitch time.

Features

  • 2.5-V to 5.5-V VOPERATING
  • Pin-to-Pin with TPS2553
  • 2-A ICONT_MAX
  • 0.275-A to 2.7-A Adjustable ILIMIT (±6.5% at 1.7 A)
  • 70-mΩ (typical) RON
  • 1.5-µs Short Circuit Response
  • 8-ms Fault Reporting Deglitch
  • Reverse Current Blocking (when disabled)
  • Built-In Soft Start
  • UL 60950 and UL 62368 Recognition Pending
  • 15-kV ESD Protection per IEC 61000-4-2 (with external capacitance)

All trademarks are the property of their respective owners.

View more

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
TPS25221 TPS2555 TPS2556 TPS2557 TPS2559
2.5     4.5     2.5     2.5     2.5    
5.5     5.5     6.5     6.5     6.5    
1     1     1     1     1    
70     73     22     22     13    
2.5     2.5     5     5     5    
0.25 to 2.7     0.25 to 2.7     0.5 to 5.0     0.5 to 5.0     Adjustable    
+/- 10%     ±10%     +/-7.0% (4100mA min / 4715mA max)     +/-7.0% (4100mA min / 4715mA max)     +/-4%    
Active High     Active Low     Active Low     Active High     Active High    
Constant-Current     Constant-Current     Constant-Current     Constant-Current     Constant-Current    
Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 85     -40 to 85     -40 to 85     -40 to 125    
6SOT-23
6WSON    
10VSON     8SON     8SON     10VSON