NCP2399: -48 V Hot Swap Controller for Redundant Supply Systems
The NCP2398 and NCP2399 integrated circuits are hot swap power managers optimized for use in nominal −48 V systems. They incorporate an improved circuit breaker response that provides rapid protection from short circuits, while still enabling plug−ins to tolerate large transients that can be generated by the sudden switchover to a higher voltage supply. 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.
Features- Wide Input Supply: −36 V to −80 V
- Transient Rating to −100 V
- Improved Transient Response
- Εnable Input (EN)
- Programmable Current Limit
- Programmable Current Slew Rate
- Fault Timer to Eliminate Nuisance Trips
- Open−Drain Power Good Output (/PG)
- MSOP−8 Package
- Pb−Free
| Benefits- Wide input voltage range
- Withstand input voltage spikes to −100 V
- Input current spike suppression during input voltage transient
- Output voltage could be switched on/off
- Current limit could be set by external resistor
- Current slew rate could be set by external capacitor
- Load current spikes shorter than about 4us are ignored
- /PG signal could be used to monitor hot-swap status
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Applications- −48 V Distributed Power Systems
- Redundant Negative Voltage Supplies
- Central Office Switching Systems
| End Products- Power source for telecom / computing (rack) systems
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Data Sheets (1)
Package Drawings (1)
| Document Title | Document ID/Size | Revision |
|---|
| MSOP 8, 3x3 | 846AD (56.5kB) | revo |
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| NCP2398DMT7G | Product Preview | Pb-free
Halide free | MSOP-8 | 846AD | 1 | Tape and Reel | 3000 | Contact BDTIC |
| NCP2399DMT7G | Product Preview | Pb-free
Halide free | MSOP-8 | 846AD | 1 | Tape and Reel | 3000 | Contact BDTIC |
Specifications
| Product | Type | VI Max (V) | rDS(on) Max (mΩ) | TSD Typ (°C) | Thyst Typ (°C) |
|---|
| NCP2398DMT7G | Latch | -100 | NA | NA | NA |
| NCP2399DMT7G | | -100 | NA | NA | NA |
