STMicroelectronics STEF512SRI
The STEF512SRI is an integrated dual electronic fuse, designed to protect circuitry on the output from overcurrent and overvoltage events, in those applications requiring hot-swap operation and in-rush current control. The device embeds two electronic fuses, one for the 5 V rail and one for the 12 V rail. The 5 V channel provides a reverse blocking feature, preventing current flow to the input in case of brown-out or shutdown.| Part No. | STEF512SRI |
|---|---|
| Datasheet | STEF512SRI Download |
| Manufacturer |  STMicroelectronics |
| Description | Dual electronic fuse |
| Buy | Stock & Price |
FEATURES
● 5 V and 12 V channels in one chip● 23.5 V absolute maximum input voltage
● Precise output overvoltage clamp
● Fixed overcurrent protection for both channels
● Reverse current protection on 5 V channel
● Current monitor output in a single pin for both rails
● Current monitor pin selection
● Thermal protection
● Auto-retry after fault
● Input undervoltage lockout
● Integrated 45 mΩ power MOSFETs
● SAS-disable pin
● SATA ignore function
● DFN10 ( 2x3 mm) package
APPLICATIONS
● HD and SSD● Hard disk arrays and NAS
● Hot-swap, hot-plug protection
DESCRIPTION
Thanks to the very low ON-resistance of the integrated power MOSFETs, the voltage drop from the main supply to the load is very low during normal operation. Startup time is internally controlled by a dedicated slew-rate circuit. In this way, the in-rush current at startup can be kept under control. The maximum load current is precisely limited, by utilizing a sense FET topology, to factory-defined values. The device also pr...
