AAT4650 5V/3V PC Card Power Switch
The AAT4650 SmartSwitch is a single channel PC card (PCMCIA) power switch. It is used to select between two different voltage inputs, each between 2.7V and 5.5V. An internal switch powers the circuitry from whichever input voltage is higher. The device’s output, VCC, is slew rate controlled and current limited, in compliance with PC card specifications. The current limit response time to a short circuit is typically 1μs. The internal P-channel MOSFET switches are configured to break before make; that is, both switches cannot be closed at the same time. Controlled by a 2-bit parallel interface, the four states for VCC are VCC5, VCC3, high impedance, or ground. When in the ground state, VCC is pulled to ground by a 5k resistor. An open drain FAULT output is asserted during overcurrent conditions. During power-up slewing, FAULT also signals that VCC is out of tolerance. An internal overtemperature sensor forces VCC to a high impedance state when an over-temperature condition exists. Quiescent current is typically a low 15μA, as long as ICC is less than approximately 500mA. Above this load current, the quiescent current increases to 200μA. The AAT4650 is available in a Pb-free, 8-pin SOP package and is specified over the -40°C to +85°C temperature range.
技术特性
订购信息 Ordering Information
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应用领域 APPLICATION
AAT4650 典型应用
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| 应用技术支持与电子电路设计开发资源下载 | 版本信息 | 大小 |
| AAT4650 数据资料DataSheet下载:pdf | Rev.V2 | 2 页 |
