Small load switch features very low on-resistance
Featuring controlled turn on and very low on-resistance, the APE8937-HF-3 load switch has been announced by Advanced Power Electronics. The load switch contains one N-channel MOSFET that can operate over a wide input voltage range of 0.8-5.5V and support a maximum continuous current of up to 4A.
On-resistance is very low with only 22mΩ from VIN=1.8V to VIN=5.0V. The switch is controlled by an on/off input, and is capable of interfacing directly with control signals as low as 0.8V. Additional features include a 300Ω on-chip load resistor for output quick discharge when the switch is turned off. For power-sequencing, the rise time is adjustable by an external ceramic capacitor on the CT pin, which also reduces inrush current.
The APE8937-HF-3 switch is available in an ultra-small, space saving 2x2mm 8-pin DFN package with thermal pad. The device is suitable for use in applications such as telecomms systems, industrial systems, set-top boxes, consumer electronics, as well as portable products where selective sub-system power-down can be used to improve efficiency and battery-life. The device is halogen-free and fully RoHS-compliant.
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