STMicroelectronics STEF512SRX
The STEF512SRX 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 inrush 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. | STEF512SRX |
|---|---|
| Datasheet | STEF512SRX Download |
| Manufacturer |  STMicroelectronics |
| Description | Dual electronic fuse |
| Buy | Stock & Price |
FEATURES
● 5 V and 12 V channels into one chip● 25 V absolute maximum input voltage
● Precise output overvoltage clamp
● Fixed overcurrent protection for both channels
● Reverse current protection on 5 V channel
● Thermal protection
● Available in auto-retry version
● Input undervoltage lockout
● Adjustable output voltage slew rate
● Integrated 45 mΩ power MOSFETs
● SAS disable pin
● Current monitor pin selection
● Current monitor output in a single pin for both rails
● DFN10 (2 x 3 mm) package
APPLICATIONS
● HD and SSD● Hard disk arrays and NAS
● Hot plug protections
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. The start-up time is internally controlled by a dedicated slew rate circuit. In this way the inrush 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.
