RP510L Series 4 A Forced PWM Step-down DC/DC Converter with Synchronous Rectifier No. EA-366-190515 OVERVIEW The RP510L is a low input voltage step-down DC/DC converter that operates from 2.5 V to 5.5 V and provides up to 4 (1) A of output current . It is suitable for power supply of SoC (System-on-a-chip). It is also available in a foldback type overcurrent protection which automatically recovers to the normal state after the cause of overcurrent is removed. KEY BENEFITS The realization of the high-density mounting by the adoption of a small package DFN3030-12. A simplification of the power sequencing by power-good and adjustable soft-start functions. Selectable overcurrent protection: Latch type or Foldback type. KEY SPECIFICATIONS TYPICAL CHARACTERISTICS Operating Temperature Range: 40C to 85C VOUT = 1.2 V, VIN = 3.3 V/5.0 V (Ta = 25C) (2) Output Voltage Range : 0.8 V to 3.3 V (3) Output Voltage Accuracy : 1% (VSET 1.2 V), 12 mV (VSET < 1.2 V) (4) Feedback Voltage Accuracy : 6 mV (VFB = 0.6 V) Output/Feedback Voltage Temperature Coefficient: 100 ppm/C Standby Current: Typ.0.35 A (RP510LxxN) Typ.0.01 A or less (RP510LxxG/H/J) Oscillator Frequency: Typ. 2.3 MHz Built-in Driver On-resistance (Pch./Nch.): Typ. 0.04 (VIN = 3.6 V) Maximum Duty Cycle: Min. 100% Minimum On Time: Typ. 55 ns Protection Features: UVLO, LX Peak Current Limit, Overcurrent protection (Latch/Foldback type), and Thermal shutdown. TYPICAL APPLICATION CIRCUIT PACKAGE V IN P VIN L X L 1 H V OUT PVIN L X C IN R AVIN 22 F 1 AV IN P GND R1 C 1 RP5 10 L P GND PG C OUT 1 C OUT 2 22 F 22 F CE AGND R 2 C AVI N 0.01F TSS V FB DFN3030-12 (1) 3.0 x 3.0 x 0.8 mm (1) maximum dimension RP510L001G/1H/4G/4H (Adjustable Output Voltage Type) APPLICATIONS POL (Point of Load) Converter, and Micro-processor Power Supply with using Battery Server, Networking Equipment, FPGA, and DSP (1) The maximum allowable output current is 4 A but it is a criterion and can be affected by conditions and external parts. (2) Refer to the section SELECTION GUIDE for details of V . SET (3) Fixed Output Voltage Type (4) Adjustable Output Voltage Type 1 RP510L No. EA-366-190515 SELECTION GUIDE (1) The set output voltage, the output voltage type, the auto-discharge function , and the protection type are user- selectable options. Selection Guide Product Name Package Quantity per Reel Pb Free Halogen Free RP510Lxx -TR DFN303012 3,000 pcs Yes Yes xx: Set Output Voltage (V ). SET Fixed Output Voltage Type: 08 (0.8 V), 10 (1.0 V), 11 (1.1 V), 12 (1.2 V), 13 (1.3 V), 15 (1.5 V), 18 (1.8 V), 30 (3.0 V), 33 (3.3 V) Adjustable Output Voltage Type: 00 (0.8 V to 3.3 V) : Other Functions Output Voltage Auto-discharge Oscillator Protection Version Type Function Frequency Type RP510Lxx1G No Fixed RP510Lxx1H Yes Latch RP510L001J No Adjustable RP510L001N Yes 2.3 MHz RP510Lxx4G No Fixed RP510Lxx4H Yes Foldback RP510L004J No Adjustable RP510L004N Yes (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