Nexperia USA Inc. RP510L004N-TR-Y

Overview

RP510L004N-TR-Y from Ricoh Electronics is a 4 A synchronous step-down DC/DC converter operating from 2.5 V to 5.5 V input, featuring adjustable output (0.8–3.3 V), foldback overcurrent protection, and 2.3 MHz fixed-frequency PWM control. It integrates high-side and low-side MOSFETs with typ. 40 mΩ on-resistance, supports power-good signaling, and targets SoC and FPGA core power delivery in compact embedded systems.

For engineers reviewing the RP510L004N-TR-Y datasheet, RP510L004N-TR-Y pinout, RP510L004N-TR-Y application, or RP510L004N-TR-Y equivalent, key selection criteria include its DFN3030-12 package thermal performance, ±1% output voltage accuracy at ≥1.2 V, 55 ns minimum on-time, auto-discharge function, and compatibility with 1 µH inductors and dual 22 µF ceramic output capacitors.

Technical Context

The RP510L004N-TR-Y implements a forced PWM architecture with internal 2.3 MHz oscillator and synchronous rectification, enabling stable operation across light-to-heavy loads without mode switching. Its adjustable feedback reference (0.6 V ±6 mV) allows precise output setting via external resistor divider, while the foldback overcurrent protection limits short-circuit current to ILXLIM/4 (≈1.6 A) and enables automatic recovery after fault removal.

Control logic includes UVLO (2.2 V nominal release), thermal shutdown (165°C trip), and soft-start timing configurable via TSS pin capacitor (0.15 ms to 30 ms). The device uses separate AGND and PGND pins, requires AVIN filtering (1 Ω + 10 nF), and mandates PCB thermal pad connection for reliable 4 A continuous operation.

Key Specifications

Pinout & Package

RP510L004N-TR-Y is housed in a thermally enhanced DFN3030-12 package (3.0 × 3.0 × 0.8 mm), requiring the bottom thermal pad to be soldered to a PCB ground plane for optimal thermal performance and 4 A current capability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down converter applications.

Compared with TPS6286418RTER and MP2144GJ-Z, RP510L004N-TR-Y uniquely combines adjustable output, foldback OCP with self-recovery, and integrated auto-discharge in a 3×3 mm DFN-making it optimal for space-constrained, battery-aware, and fault-resilient SoC/FPGA power designs.

Availability

RP510L004N-TR-Y is available at Aetrix Electronics and suitable for mobile SoC power, FPGA I/O supply, networking ASIC bias rails, and industrial PLC CPU modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for RP510L004N-TR-Y includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Ricoh Electronics is a Japanese semiconductor manufacturer specializing in highly integrated power management ICs, including DC/DC converters, LDOs, and battery management solutions for consumer, industrial, and automotive markets.

The RP510L series is designed specifically for high-efficiency, high-density point-of-load conversion in portable and embedded systems-emphasizing low quiescent current, thermal resilience, and flexible protection schemes for modern SoC and FPGA power architectures.

FAQ

What is the recommended external inductor value and why?

The RP510L004N-TR-Y is optimized for a 1.0 µH shielded power inductor with low DC resistance (e.g., TDK CLF7045NIT-1R0N-D). This value ensures stable continuous conduction mode across the full 4 A load range while maintaining phase margin and minimizing peak LX current. Inductors outside 1.0 µH ±20% risk instability or premature overcurrent triggering due to altered ripple and duty cycle behavior.

How does the auto-discharge function operate and when is it active?

The auto-discharge function activates immediately when the CE pin transitions from high to low, turning on an internal NMOS between VOUT and PGND to discharge the output capacitor rapidly. It remains active until VOUT falls below ~50 mV. This feature prevents back-powering of upstream sources and satisfies strict power sequencing requirements in multi-rail systems, especially during controlled shutdown.

Can the RP510L004N-TR-Y be used without the AVIN pin connection?

No. AVIN must be connected via a 1 Ω resistor and 10 nF capacitor to the PVIN net, with the capacitor tied to AGND. Omitting this filter introduces noise into the internal voltage reference and feedback comparator, causing output voltage drift, regulation inaccuracy exceeding ±1%, and potential instability-especially under dynamic load or high-PVIN ripple conditions.

What is the maximum achievable output current and what limits it?

The RP510L004N-TR-Y is rated for up to 4 A continuous output, but actual capability depends on PCB thermal design. With the DFN3030-12 thermal pad fully soldered to ≥200 mm² of 2-oz copper, ambient ≤60°C, and 200 LFM airflow, 4 A is sustainable. Without adequate copper area or airflow, thermal shutdown (165°C) or reduced duty cycle will limit current-typically to ~2.5 A on minimal 2-layer boards.