TPS25940 (ACTIVE)

18V, 5A, 42mΩ eFuse With Integrated Reverse Current Protection and DevSleep Support

18V, 5A, 42mΩ eFuse With Integrated Reverse Current Protection and DevSleep Support - TPS25940
 

Description

The TPS25940 eFuse Power Switch is a compact, feature rich power management device with a full suite of protection functions, including a low power DevSleep™ mode that supports compliance with the SATA™ Device Sleep standard. The wide operating range allows control of many popular DC bus voltages. Integrated back to back FETs provide bidirectional current control making the device well suited for systems with load side holdup energy that must not drain back to a failed supply bus.

Load, source and device protection are provided with many programmable features including overcurrent, dVo/dt ramp and overvoltage, undervoltage thresholds. For system status monitoring and downstream load control, the device provides PGOOD, FLT and precise current monitor output. Precise programmable undervoltage, overvoltage thresholds and the low IQ DevSleep mode simplify SSD power management design.

The TPS25940 monitors V(IN) and V(OUT) to provide true reverse current blocking when V(IN) < (V(OUT) - 10 mV). This function supports swift changeover to a boosted voltage energy storage element in systems where backup voltage is greater than bus voltage.

Features

  • 2.7 V – 18 V Operating Voltage, 20 V (Max)
  • 42 mΩ RON (Typical)
  • 0.6 A to 5.3 A Adjustable Current Limit (±8%)
  • IMON Current Indicator Output (±8%)
  • 200 µA Operating IQ (Typical)
  • 95 µA DevSleep Mode IQ (Typical)
  • 15 µA Disabled IQ (Typical)
  • ±2% Overvoltage, Undervoltage Threshold
  • Reverse Current Blocking
  • 1 µs Reverse Voltage Shutoff
  • Programmable dVo/dt Control
  • Power Good and Fault Outputs
  • –40°C to 125°C Junction Temperature Range
  • UL 2367 Recognized
    • File No. 169910
    • RILIM ≥ 20 kΩ (4.81 A max)
  • UL60950 - Safe during Single Point Failure Test
    • Open/Short ILIM detection

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Parametrics Compare all products in eFuses (Integrated FET)

 
Vin (Min) (V)
Vin (Max) (V)
Current Limit (Min) (A)
Current Limit (Max) (A)
Current Limit Type
Ron (Typ) (mOhm)
Features
Overcurrent Response
Overvoltage Response
Number of Channels (#)
Rise Time (Typ) (us)
FET Protection
Vabsmax_cont (V)
UL Recognition
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
Imax (A)
Current Limit Accuracy
Channel(s) Controlled (#)
Current Limit Function Enabled
TPS25940
2.7   
18   
0.6   
5.2   
Adjustable   
42   
Current Sense/Monitor
Overvoltage Protection
Reverse Current Protection
Thermal Shutdown
Undervoltage Protection   
Current Limiting   
Cutoff   
1   
Adjustable   
Thermal   
20   
Yes   
-40 to 85   
WQFN   
20WQFN: 12 mm2: 4 x 3(WQFN)   
5.2   
+/-8%   
1   
Always   

Other qualified versions of TPS25940

Version Part Number Definition
Automotive TPS25940-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects
WEBENCH® TPS25940A

TPS25940A

 
2.70 <=
V in Lower
 V
 
<=
V in Upper
 V

<= 18.00
Output Current Limit  Amps
Load Capacitance  uF
UVLO  V
OVLO  V
Ambient Temperature  °C <= 100

   

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