The RAA210040 power module is a compact, synchronous step-down, non-isolated complete power supply, capable of delivering up to 4A of continuous current. By operating from a single 2.7V to 5.5V input power rail and integrating the controller, gate driver, power inductor, and MOSFETs, the RAA210040 is optimized for space-constrained applications.

Based on a peak current mode control scheme, the RAA210040 provides fast transient response and excellent loop stability. The output voltage can be set as low as 0.6V, with setpoint accuracy better than 1.5% over line, load, and temperature. The operating frequency has a 2MHz default setting; however, it can also be set from 500kHz to 4MHz by an external resistor. The external synchronization is supported with an external clock signal up to 4MHz. The RAA210040 supports a 100% duty cycle operation to minimize the switching losses and allows less than 200mV dropout voltage. A dedicated enable pin and power-good flag allows for easy system power rails sequencing.

An array of protection features, including input Undervoltage Lockout (UVLO), Overcurrent Protection (OCP), output Overvoltage Protection (OVP), and Over-temperature Protection (OTP), ensures safe operations under abnormal operating conditions.

Features

  • 4A complete power supply - Integrates controller, gate driver, MOSFETs, and inductor
  • 2.7V to 5.5V input voltage range
  • Adjustable output voltage
  • Default 2MHz current mode control operation
  • Dedicated enable pin and power-good flag
  • Internal 1ms soft start-up time
  • Soft-stop output discharge
  • UVLO, OCP, negative OCP, OVP, and OTP
  • Compact RoHS compliant 3mmx3mmx1.7mm dual flat no-lead (DFN) package
     

Applications

  • Telecom, Industrial, optical, and medical equipment
  • Point-of-load conversions
  • MCU, MPU, DSP, and FPGA

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active Module Reel 1000
Availability
Active Module Reel 3000
Availability

Documentation

Title language Type Format File Size Date
Datasheets & Errata
RAA210040 Datasheet Datasheet PDF 989 KB
Application Notes & White Papers
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
Carrying the Heat Away from Power Module PCB Designs 简体中文 White Paper PDF 866 KB
How Green is Your Cloud? White Paper PDF 295 KB
The Benefits of Using an Integrated Power Module vs. a Discrete Regulator 简体中文 White Paper PDF 169 KB
Other
Power Module Board Level Reliability Report Other PDF 187 KB
TB488: PCB Land Pattern Design and Surface Mount Guidelines for POL Modules Other PDF 980 KB
RAA210040 AC Analysis 3.3V-0.8V iSim:PE Model Schematic WXSCH 307 KB
RAA210040 AC Analysis 3.3V-1.2V iSim:PE Model Schematic WXSCH 307 KB
RAA210040 AC Analysis 3.3V-2.5V iSim:PE Model Schematic WXSCH 307 KB
RAA210040 AC Analysis 5V-1.2V iSim:PE Model Schematic WXSCH 307 KB
RAA210040 AC Analysis 5V-3.3V iSim:PE Model Schematic WXSCH 307 KB
RAA210040 Startup 3.3V-0.8V iSim:PE Model Schematic WXSCH 279 KB
RAA210040 Startup 3.3V-1.2V iSim:PE Model Schematic WXSCH 279 KB
RAA210040 Startup 3.3V-2.5V iSim:PE Model Schematic WXSCH 279 KB
RAA210040 Startup 5V-1.2V iSim:PE Model Schematic WXSCH 279 KB
RAA210040 Startup 5V-3.3V iSim:PE Model Schematic WXSCH 279 KB
RAA210040 Tran 3.3V-0.8V iSim:PE Model Schematic WXSCH 283 KB
RAA210040 Tran 3.3V-1.2V iSim:PE Model Schematic WXSCH 282 KB
RAA210040 Tran 3.3V-2.5V iSim:PE Model Schematic WXSCH 282 KB
RAA210040 Tran 5V-1.2V iSim:PE Model Schematic WXSCH 282 KB
RAA210040 Tran 5V-3.3V iSim:PE Model Schematic WXSCH 283 KB

Software & Tool Pages

Title Type Description Company
iSim:PE Offline Simulation Tool Simulator iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs. Renesas

Boards & Kits

Part Number Title Type Company
RTKA210040DR0000BU 5V, 4A Step-Down DC/DC Mini Module Demonstration Board Demonstration Renesas