STMicroelectronics' STEF01 is a universal integrated electronic fuse optimized for monitoring output current and the input voltage on DC power lines. When connected in series to the main power rail, it can detect and react to overcurrent and overvoltage conditions. The device is fully programmable. UVLO, overvoltage clamp, and startup time can be set through external components. The adjustable turn-on time is useful to keep the in-rush current under control during startup and hot-swap operations.
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- Wide operating input voltage range: 8 V to 48 V (absolute maximum input voltage: 55 V) wide field of application
- Low N-channel on-resistance typ.: 30 mΩ, reduced losses
- Bidirectional enable/fault pin allows remote control and status monitor
- Output clamp voltage: adjustable from 10 V to 52 V preventing overvoltage to the load
- Programmable undervoltage lockout prevents malfunction in case of bad supply voltage
- Short-circuit current limit prevent damage and power supply overload in case of shorted load
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- Programmable overload current limit prevents application from unexpected overload condition
- Adjustable soft-start time reducing the inrush current at startup
- Latch or auto-retry thermal protection selectable mode of operation after faults
- Power good provides status information to system controller
- Drives an optional external reverse current protection MOSFET prevents reverse current flows
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| Applications |
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- Hot board insertion
- Electronic circuit breaker/power busing
- Industrial/alarm/lighting systems
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- Distributed power systems
- Telecom power modules
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