Ricoh Electronic Devices Company R5542Z Voltage Detector comes with a built-in Nch. driver transistor with typically 9mΩ ON resistance. This transistor allows the R5542Z detector to provide a low dropout voltage and prevents the reverse current during shutdown mode. The R5542Z detector is offered in an ultra-small WLCSP-12-P3 package. This detector consists of an internal voltage step-up circuit, a soft-start circuit, a chip enable circuit, and a UVLO circuit. The R5542Z detector is an ideal load switch IC for supplying power from the battery to the load circuit. Applications include smartphones, tablet PCs, storage, and portable devices.
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