TPS2057
- 135-m -Maximum (5-V Input) High-Side MOSFET Switch
- 250 mA Continuous Current per Channel
- Independent Short-Circuit and Thermal Protection With Overcurrent Logic Output
- Operating Range...2.7-V to 5.5-V
- Logic-Level Enable Input
- 2.5-ms Typical Rise Time
- Undervoltage Lockout
- 20 uA Maximum Standby Supply Current
- Bidirectional Switch
- Available in 16-pin SOIC Package
- Ambient Temperature Range, -40°C to 85°C
- 2-kV Human-Body-Model, 200-V Machine-Model ESD Protection
typical applications
- Notebook, Desktop and Palmtop PCs
- Monitors, Keyboards, Scanners, and Printers
- Digital Cameras, Phones, and PBXs
- Hot-Insertion Applications
The TPS2047 and TPS2057 triple power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely. These devices incorporate in single packages three 135-m N-channel MOSFET high-side power switches for power-distribution systems that require multiple power switches. Each switch is controlled by a logic enable compatible with 5-V and 3-V logic. Gate drive is provided by an internal charge pump that controls the power-switch rise times and fall times to minimize current surges during switching. The charge pump, requiring no external components, allows operation from supplies as low as 2.7 V.
When the output load exceeds the current-limit threshold or a short is present, the TPS2047 and TPS2057 limit the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx\) logic output low. When continuous heavy overloads and short circuits increase the power dissipation in the switch causing the junction temperature to rise, a thermal protection circuit shuts off the switch in overcurrent to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch remains off until valid input voltage is present.
The TPS2047 and TPS2057 are designed to limit at 0.44-A load. These power-distribution switches are available in 16-pin small-outline integrated circuit (SOIC) packages and operate over an ambient temperature range of -40°C to 85°C.
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | Triple Power-Distribution Switches 数据表 | 1999年 4月 6日 | |||
证书 | US-36986-UL Certificate of Compliance IEC 62368-1 | 2021年 3月 12日 |
设计和开发
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订购和质量
- RoHS
- REACH
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- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
- 制造厂地点
- 封装厂地点