RP512x Series 0.3 A I Ultra-low Quiescent Current 300 mA Buck DC/DC Converter Q No. EA-400-190401 OVERVIEW RP512x is a DC/DC converter featuring 0.3 A ultra-low operating quiescent current. It is suitable for use in wearable and IoT devices that require miniaturization and long-lifetime of battery. KEY BENEFITS VFM (fSW up to 1 MHz) control achieves 0.3 A ultra-low operating quiescent current. The wide range of VIN from 2.0 V to 5.5 V allows operation from coin cell to USB port. 2 Total mount area including CIN, COUT, and inductor is 10.6 mm . Selectable packages including WLCSP, DFN, and SOT. 0.4 mm-thickness WLCSP package adaptable to IC cards. KEY SPECIFICATIONS TYPICAL CHARACTERISTICS VOUT = 1.8 V Output Current: 300 mA 100 Output Voltage Range: 80 1.0 V to 4.0 V (Settable in 0.1 V step) 60 Vin=2.3V Output Voltage Accuracy: 40 Vin=3.6V 1.5% (VSET 1.2 V), 18 mV (VSET < 1.2 V) Vin=5.5V 20 Built-in Driver On-resistance (V = 3.6 V): IN 0 Typ. PMOS 0.15 , NMOS 0.15 (RP512Z) 0.001 0.01 0.1 1 10 100 1000 Standby Current: 0.01 A I mA OUT TYPICAL APPLICATIONS SELECTION GUIDE VIN VOUT VIN LX Qty per L RP512x Product Name Package Reel VOUT C C IN OUT RP512Zxx1 -TR-F WLCSP-8-P1 5,000 pcs GND CE RP512Kxx1 -TR DFN2527(PLP)-10 5,000 pcs RP512Hxx1 -T1-FE SOT-89-5 1,000 pcs L: 2.2 H, COUT: 22 F xx: Set output voltage (V ) SET Fixed Output Voltage Type: PACKAGES 1.0 V (10) to 4.0 V (40) in 0.1 V step. : Version Version Auto-discharge Function V SET C No 1.0 V to 4.0 V D Yes WLCSP-8-P1 DFN(PLP)2527-10 SOT-89-5 1.45 mm x 1.48 mm, 2.7mm x 2.5 mm, 4.5mm x 4.35mm, t=0.4mm (max.) t=0.6mm (max.) t=1.6mm (max.) APPLICATIONS Wearable equipment such as SmartWatch, SmartBand, and health monitoring Li-ion battery-used equipment, Coin cell-used equipment Low power RF such as Bluetooth Low Energy, Zigbee, WiSun, and ANT Low power CPU, memory, sensor devices, and energy harvesting 1 Efficiency % RP512x No. EA-400-190401 SELECTION GUIDE (1) The set output voltage, the output voltage type, and the auto-discharge function , and the package for the ICs are user-selectable options. Selection Guide Product Name Package Quantity per Reel Pb Free Halogen Free RP512Zxx1 -TR-F WLCSP8P1 5,000 pcs Yes Yes RP512Kxx1 -TR DFN(PLP)2527-10 5,000 pcs Yes Yes RP512Hxx1 -T1-FE SOT-89-5 1,000 pcs Yes Yes xx: Designation of the set output voltage (VSET) (2) For Fixed Output Voltage Type : 1.0 V (10) to 4.0 V (40) in 0.1 V step : Designation of Version Version Auto-discharge Function V SET C Disable 1.0 V to 4.0 V D Auto-discharge (1) Auto-discharge function quickly lowers the output voltage to 0 V, when the chip enable signal is switched from the active mode to the standby mode, by releasing the electrical charge accumulated in the external capacitor. (2) The customization of specifying in 0.05 V step is available. 2