Product overview
概要
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. 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 5 V channel provides a reverse blocking feature, preventing current flow to the input in case of brown-out or shutdown.
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.
The device also provides precise overvoltage clamp for each channel, preventing the load being damaged from power supply failures, and undervoltage lockout (UVLO), assuring that the input voltage is above the minimum operating threshold, before the power is turned on.
When an overload condition occurs, the STEF512SRX limits the output current to the predefined safe value. If the anomalous overload condition persists, the device goes into thermal shutdown, the internal switch is opened and the load is disconnected from the power supply.
Load current on each channel can be accurately monitored by reading the signal on the IMON_5/12 pin.
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All 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
EDA Symbols, Footprints and 3D Models
STMicroelectronics - STEF512SRX
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHSコンプライアンスグレード | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| STEF512SRXCPUR | Active 交換品交換品 | WFDFPN 2X3 10L COL | Industrial | Ecopack2 | - | - | |
STEF512SRXCPUR
Package:
WFDFPN 2X3 10L COLMaterial Declaration**:
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Sample & Buy
| Part Number | 製品ステータス | Budgetary Price (US$)*/Qty | STから購入 | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小 | 最大 | |||||||||||||
| STEF512SRXCPUR | | | distributors 販売代理店に在庫がない場合は、STのセールス･オフィスまでお問い合わせください | |||||||||||
STEF512SRXCPUR Active
販売代理店に在庫がない場合は、STのセールス･オフィスまでお問い合わせください
（*）概算用の参考価格（US$）です。現地通貨でのお見積りについては、STのセールス･オフィスまたは販売代理店までお問い合わせください。