产品概述
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.
-
所有功能
- 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
特别推荐
EDA符号、封装和3D模型
STMicroelectronics - STEF12S
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Please select one model supplier :
符号
封装
3D模型
质量与可靠性
| 产品型号 | Marketing Status | 封装 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| STEF12SAGR | 批量生产 | TSOT 8L | 工业 | Ecopack2 | |
| STEF12SAPUR | 批量生产 | DFN10 3X3 | 工业 | Ecopack2 | |
| STEF12SGR | 批量生产 | TSOT 8L | 工业 | Ecopack2 | |
| STEF12SPUR | 批量生产 | DFN10 3X3 | 工业 | 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。
样片和购买
| 产品型号 | Order from distributors | 从ST订购 | 供货状态 | ECCN (US) | ECCN (EU) | 包装类型 | 封装 | 温度（ºC） | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 批量生产 | EAR99 | NEC | Tape and Reel | DFN10 3X3 | -40 | 125 | CHINA | | ||
| STEF12SAPUR | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | EAR99 | NEC | Tape and Reel | DFN10 3X3 | -40 | 125 | CHINA | | ||
| STEF12SGR | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | EAR99 | NEC | Tape and Reel | TSOT 8L | -40 | 125 | MALAYSIA | | ||
| STEF12SAGR | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | EAR99 | NEC | Tape and Reel | TSOT 8L | -40 | 125 | MALAYSIA | | ||