R5542Z Series 6 A Low ON Resistance Nch Load Switch IC with Voltage Detector NO.EA-335-181030 OUTLINE The R5542Z is a Nch. load switch IC with a voltage detector. The R5542Z is an ideal load switch IC for supplying the power from the battery to the load circuit. A built-in Nch. driver transistor with typically 9 m ON resistance allows the R5542Z to provide a low dropout voltage and prevents the reverse current during shutdown mode. Internally, the R5542Z consists of an internal voltage step-up circuit, a soft-start circuit, a chip enable circuit and a UVLO circuit. The R5542Z is offered in an ultra-small WLCSP-12-P3 package which can achieve the smallest possible footprint solution on boards where area is limited. FEATURES Load Switch Section Input Voltage Range 2.3 V to 5.5 V Output Current DC Max. 6 A Output Pulsed Current Max. 12 A (Pulsed at 1 ms, 10% Duty Cyce) Switch ON Resistance 9 m (V = 3.0 V, I = 300 mA) IN OUT Reverse Current Blocking (RCB) during shutdown mode Soft-start Function Voltage Detector Section Supply Current Typ. 1.0 A (VVDI = 2.0 V) Operating Voltage Range 1.2 V to 5.5 V (Ta = 25C) Detector Threshold Range 2.0 V to 5.0 V (0.1 V steps) Detector Threshold Accuracy 2.0% Detector Threshold Temperature Coefficient Typ. 100 ppm/C Output Type CMOS Package WLCSP-12-P3 APPLICATIONS Smart Phones, Tablet PCs Storage, Portable Devices 1 R5542Z NO.EA-335-181030 SELECTION GUIDE The detector threshold is a user-selectable option. Selection Guide Product Name Package Quantity per Reel Pb Free Halogen Free R5542Zxx2B-E2-F WLCSP-12-P3 4,000 pcs Yes Yes xx: Specify the detector threshold within the range of 2.0 V (20) to 5.0 V (50) in 0.1 V steps. BLOCK DIAGRAMS RCB IN OUT ESD Protection ESD Protection LCE Gate Control ESD Protection VDI ESD Protection + VDO VDO - Vref ESD Protection GND R5542Zxx2B Block Diagram 2