Recently, Vishay announced the launch of a new 6.5mΩ bidirectional battery switch with slew rate control, the SiP32101, which can be used to isolate low voltage batteries in portable electronic devices, medical devices and instrumentation. In these space-constrained applications, the Vishay Siliconix SiP32101 saves 91% of PCB space compared to discrete MOSFETs and achieves low on-resistance and ultra-low quiescent current in a small 12-bump WCSP package. PCB space is a primary consideration in products such as smartphones, tablets, digital cameras, portable medical devices, and data storage systems. In these products, the discrete MOSFET solution for battery isolation uses three components, typically occupying an area of ​​26 mm2. With a footprint of only 2.3mm2, the SiP32101 saves valuable board space and reduces overall component count, simplifying design. In addition, the device has an active-low enable pin that can interface directly with the GPIO without the need for an additional level shifting circuit or high voltage gate drive. An integrated pull-down resistor is connected to the EN pin. Where the GPIO may be left floating, the resistor prevents false turn-on in low power states. The SiP32101 has an on-resistance of 6.5mΩ at 3.3V, which reduces power loss and improves efficiency. The device's input voltage is 2.3V to 5.5V, and the soft-on time is 2ms, which minimizes the inrush current, making it ideal for high-capacity battery applications and high-current load switching. The load switch consumes very little current in both the on and off states. The quiescent current and shutdown current of the device are 0.015nA and 0.01nA, respectively, so that if the device is idle for a long time, the battery will not run out quickly. The battery load switch released today operates from -40°C to +85°C, is RoHS compliant, halogen-free, and is available in a 1.3mmx1.7mmx0.55mmWCSP package. The SiP32101 is sampling now and is in volume production. The lead time for major orders is ten weeks.
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Vishay Introduces New Bidirectional Battery Switch Saves 91% Space Compared to Discrete MOSFET