产品概要
描述
The STEF12S is an integrated electronic fuse optimized to monitor the 12 V DC power lines.
When connected in series to the main power rail, it is able to precisely detect and react to overcurrent and overvoltage conditions.
When an overload condition occurs, the device limits the output current to a safe value defined by the user. If the anomalous overload condition persists, the device goes into an open state, disconnecting the load from the power supply.
In case of overvoltage on the input, the device regulates the output to a preset safe value.
Undervoltage lockout prevents the load from malfunction, keeping the device off if the rail voltage is too low.
The STEF12S features the adjustable turn-on slew-rate, which is useful to keep the in-rush current under control during startup and hot-swap operations.
On the DFN10 package a dedicated pin provides a gate control for an external optional N-channel Power FET, used to implement the reverse current blocking in case of input voltage loss.
The STEF05S is a companion chip for the 5 V rails, useful to implement a complete power rail control in data-storage applications.
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性能一览
- 15 V typical output overvoltage clamp
- Absolute maximum voltage of 25 V
- Adjustable current limit
- Thermal protection
- Input undervoltage lockout
- Low inrush current during startup
- Integrated 40 mΩ Power FET
- En/fault pin
- Adjustable slew rate for output voltage
- Gate control pin for reverse current blocking FET (DFN10 package)
- TSOT23-8L and DFN10 (3x3 mm) packages
- Latch (STEF12S) or autoretry (STEF12SA) versions
- UL2367 Recognized - File N. E468771
- IEC 62368-1 CB certified
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STMicroelectronics - STEF12S
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| STEF12SAGR | Active 产品已量产 | TSOT 8L | Industrial | Ecopack2 | - | - | |
| STEF12SAPUR | Active 产品已量产 | DFN10 3X3 | Industrial | Ecopack2 | - | - | |
| STEF12SGR | Active 产品已量产 | TSOT 8L | Industrial | Ecopack2 | - | - | |
| STEF12SPUR | Active 产品已量产 | DFN10 3X3 | Industrial | Ecopack2 | - | - |
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
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Sample & Buy
| Part Number | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||||
| STEF12SPUR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| STEF12SAPUR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| STEF12SGR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| STEF12SAGR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
STEF12SPUR Active
STEF12SAPUR Active
STEF12SGR Active
STEF12SAGR Active