Product category:
Power Supply ICs and Controllers
News Release from: ON Semiconductor | Subject: NUS3116
Edited by the Electronicstalk Editorial
Team on 30 July 2007
Power switches combine to save handset
space
Main battery switch, wall charging switch and USB charging switch elements are combined into a single component.
Available now from ON Semiconductor, the NUS3116 is an integrated charging and power switching circuit for small form factor portable electronics like cellular phones This circuit combines a main battery switch, wall charging switch and USB charging switch elements into a single component, optimising charging performance and saving critical space on circuit boards in handheld electronic devices
This article was originally published on Electronicstalk on 31 Mar 2003 at 8.00am (UK)
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The NUS3116 is an integration of a main power switch, a -12V/-6.2A uCool single P-channel MOSFET to handle the main battery switch function and two internal low saturation PNP transistors to handle dual channel charging elements.
With 40mohm maximum on-resistance, the main switch MOSFET minimises power loss during battery operation of portable electronics.
The dual low-saturation-voltage transistors provide good thermal performance for charge currents up to 2A, and have a collecter-emitter voltage drop of less than 240mV at the end of the charging.
Offered in a DFN-8 package that requires only 9mm2 of board space, the NUS3116 provides a board savings of more than 20mm2 versus typical solutions using three TSOP-6 packages with interconnect space.
The package's low profile of 0.8mm allows the device to be used in small form factor designs.
Use of the NUS3116 integrated device also reduces the complexity of circuit board layout.
The NUS3116 is available in a Pb-free DFN-8 package, and is priced at US $0.80 per unit in 3000-unit quantities.
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