MAX1946Maxim IntegratedSingle USB Switch with Autoreset and Fault Blanking in Tiny TDFNSmallest Single USB Switch with Autoreset and Fault Blanking in Tiny TDFN Package
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MAX1946Maxim Integrated
制造商:
Maxim Integrated
制造商型号#:
MAX1946
百芯编号#:
CM986560738
价格(CNY):
百芯库存:
219
个
库存地点:
可供应量:
155
个在库
此为供应商库存，需要与销售确认
产品描述:
Single USB Switch with Autoreset and Fault Blanking in Tiny TDFNSmallest Single USB Switch with Autoreset and Fault Blanking in Tiny TDFN Package
The MAX1946 single current-limited switch with auto-reset supplies a guaranteed 500mA load in accordance with USB specifications. The MAX1946 operates from a 2.7V to 5.5V input supply and consumes only 40µA of quiescent current when operating and only 3µA in shutdown. Selectable active-high/active-low control logic and shutdown control provide additional flexibility. An autoreset feature latches the switch off in the event of a short circuit, saving system power. The switch reactivates upon removal of the shorted condition.
The MAX1946 provides several safety features to protect the USB port. Built-in thermal-overload protection turns off the switch when the die temperature exceeds +160°C. Accurate internal current-limiting circuitry protects the input supply against both overload and short-circuit conditions. An open-drain fault signal, (active-low FAULT), notifies the microprocessor (µP) when a thermal overload, current-limit, undervoltage lockout (UVLO), or short-circuit fault occurs. A 20ms fault-blanking feature enables the circuit to ignore momentary faults, such as those caused when hot-swapping a capacitive load, preventing false alarms to the host system. The fault-blanking feature prevents fault signals from being issued when the device powers up the load.
The MAX1946 is available in a space-saving 8-pin (3mm x 3mm) TDFN package and operates over the extended (-40°C to +85°C) temperature range.
