Features: ` Wide Input Supply Range: 36 V to 80 V
` Transient Rating to 100 V
` Programmable Current Limit
` Programmable Current Slew Rate
` Enable Input (EN)
` Fault Timer to Eliminate Nuisance Trips
` Open-Drain Fault Output (FAULT)
` Requires Few External Components
` 8-Pin MSOP Package
Application` 48-V Distributed Power Systems
` Central Office Switching
` Wireless Base Station
Specifications
| |
TPS2390/1 |
UNIT |
| Input voltage range, all pins except RTN, EN,FAULT(2) |
0.3 V to 15 |
V |
| Input voltage range, RTN(2) |
0.3 V to 100 |
V |
| Input voltage range, EN(2)(3) |
0.3 V to 100 |
V |
| Output voltage range, FAULT(2)(4) |
0.3 V to 100 |
V |
| Continuous output current,FAULT |
10 |
mA |
| Continuous total power dissipation |
see Dissipation Rating Table |
|
| Operating junction temperature range, TJ |
55 to 125 |
|
| Storage temperature range, Tstg |
65 to 150 |
|
| Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds |
260 |
|
NOTES 1: Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolutemaximumrated conditions for extended periods may affect device reliability.
2: All voltages are with respect to VIN (unless otherwise noted).
3: With 100-k minimum input series resistance, 0.3 V to 15 V with low impedance.
4: With 10-k minimum series resistance, 0.3 V to 80 V with low impedance.
DescriptionThe TPS2390 and TPS2391 integrated circuits are hot swap power managers optimized for use in nominal 48-V systems. They are designed for supply voltage ranges up to 80 V, and are rated to withstand spikes to 100 V. In conjunction with an external N-channel FET and sense resistor, they can be used to enable live insertion of plug-in cards and modules in powered systems. Both devices provide load current slew rate and peak magnitude limiting, easily programmed by sense resistor value and a single-external capacitor.
They also provide single-line fault reporting, electrical isolation of faulty cards, and protection against nuisance overcurrent trips. The TPS2390 latches off in response to current faults, while the TPS2391 periodically retries the load in the event of a fault.
TPS2390 Data Sheet
