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The STEF512PUR is an integrated dual electronic eFuse, 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 independent electronic fuses, one for the 5 V rails and one for the 12 V rails. Thanks to the very low ON-resistance of the integrated power FETs, the voltage drop from the main supply to the load is very low during normal operation.
The startup time can be adjusted by the user for each eFuse, via two small soft-start capacitors, connected to the relevant pins.
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 (3 A for 5 V output and 4 A for 12 V output).
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 device is turned on.
When an overload condition occurs, the STEF512PUR 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 disconnected from the power supply.
In the QFN10 package two current monitor pins are available, providing continuous information on the load current for each channel.特徴
- 5 V and 12 V channels into one chip
- Output over voltage clamp
- Fixed current limit : 3 A on 5 V, 4 A on 12 V
- Latched-off thermal protection
- Input undervoltage lockout
- Adjustable output voltage slew rate for each channel
- Integrated 40 mΩ Power FETs
- SAS disable pin
- Current monitor output
- QFN10-2x3 package
注目ビデオ
All resources
製品スペック (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 28 Sep 2020 |
28 Sep 2020
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セレクション･ガイド (1)
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| 04 Jan 2021 |
04 Jan 2021
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パンフレット (1)
| Resource title | Latest update | |||
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| 19 Jul 2019 |
19 Jul 2019
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EDA Symbols, Footprints and 3D Models
STMicroelectronics - STEF512PUR
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品質 & 信頼性
| 製品型番 | Marketing Status | パッケージ | グレード | RoHSコンプライアンスグレード | 材料宣誓書** |
|---|---|---|---|---|---|
| STEF512PUR |
量産中
|
WFQFPN 10 2X3X0.75 | インダストリアル | Ecopack2 |
(**) st.comで提供している材料宣誓書は、パッケージ･ファミリ内で最も一般的に使用されているパッケージに基づく汎用ドキュメントの場合があります。そのため、特定の製品では100%正確ではない可能性があります。特定の製品情報については、セールスサポートまでお問い合わせください
サンプル & 購入
| 製品型番 | 販売代理店からオーダー | STからオーダー | 製品ステータス | ECCN (US) | ECCN (EU) | 梱包タイプ | パッケージ | 温度（℃） | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小 | 最大 | |||||||||||
| STEF512PUR | 3 distributors | Buy Direct |
量産中
|
EAR99 | NEC | Tape And Reel | WFQFPN 10 2X3X0.75 | -40 | 125 | CHINA | 0.85 / 1k | |
（*）概算用の希望小売単価（US$）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。
