AAT4670 Dual-Input, Dual-Output Load Switch
The AAT4670 SmartSwitch is a member of Skyworks’ Application Specific Power MOSFET™ (ASPM™) product family. The AAT4670 consists of dual, independent, 1A current limited, slew rate controlled P-channel MOSFET power switches with a dedicated source and drain pin assigned to each switch. The internal circuitry automatically derives power from the higher of the two input power source pins with a low operating quiescent current of 18μA. In shutdown mode, the supply current decreases to less than 1μA. The switches operate with inputs ranging from 2.2V to 5.5V, making them ideal for 2.5V, 3V, and 5V systems. The dual configuration permits integration of the load switch function for systems with two different power busses. Independent under-voltage lockout circuits will shut down the corresponding switch if its input voltage falls below the under-voltage lockout threshold. If the die temperature reaches the thermal limit, both switches thermal cycle off and on indefinitely without damage until the thermal condition is removed. An open drain FAULT output signals an over-current or over-temperature condition for each channel. Input logic levels are TTL compatible. The AAT4670 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
- 2.2V to 5.5V Input Voltage Range
- 1A Current Limit Per Channel
- 95m Typical RDS(ON)
- Fast Transient Response:
- <1μs Response to Short Circuit
- Low 18μA Quiescent Current
- 1μA Max with Switches Off
- Slew Rate Controlled
- Thermal Shutdown
- Fault Flags with 3ms Blanking
- Under-Voltage Lockout
- Temperature Range: -40°C to +85ºC
- SOP-8 Package
订购信息 Ordering Information
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应用领域 APPLICATION
- Hot Swap Supplies
- Media Bay
- Notebook Computer
- PDA, Subnotebook
- Peripheral Ports
- USB Ports
AAT4670 典型应用
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