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The STEF512GR is an integrated dual electronic fuse, designed to protect circuitry on its 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 operations.
The start-up time can be adjusted by the user for each e-fuse, via two small soft-start capacitors, connected to the relevant pins.
In this manner, 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 a precise overvoltage clamp for each channel, preventing the load from being damaged by 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 STEF512GR 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.主要特性
- 5 V and 12 V channels into one chip
- 25 V absolute maximum input voltage
- Precise 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
- TSOT23-8L package
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产品规格 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 02 Mar 2020 |
02 Mar 2020
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选型指南 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 25 Mar 2020 |
25 Mar 2020
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手册 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 19 Jul 2019 |
19 Jul 2019
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EDA Symbols, Footprints and 3D Models
STMicroelectronics - STEF512GR
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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** |
|---|---|---|---|---|---|
| STEF512GR |
批量生产
|
TSOT 8L | 工业 | Ecopack2 |
|
STEF512GR
Package:
TSOT 8LMaterial Declaration**:
(**) 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 | 从分销商订购 | 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$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||
| STEF512GR | 1 distributors |
批量生产
|
EAR99 | NEC | Tape And Reel | TSOT 8L | -40 | 125 | MALAYSIA | 0.75 / 1k | ||
供货状态
批量生产ECCN (US)
EAR99Budgetary Price (US$)*/Qty
0.75 / 1k