Overview

The RAA489301 is a 3-level buck voltage controller that provides seamless transitions among VOUT < VIN/2, VOUT = VIN/2, and VOUT > VIN/2. The RAA489301 offers a wide range of regulated output voltage and high efficiency. It also reduces the inductor size significantly.

The advanced Renesas R3™ Technology provides high light-load efficiency, fast transient response, and seamless DCM/CCM transitions. The RAA489301 supports input sources such as batteries of various chemistries in 2S to 5S configurations. It also supports the USB PD adapter, safely converting it to a regulated output voltage of up to 24V. The RAA489301 can also convert a wide range of input-side DC power sources to a regulated output voltage.

In addition to a 3-level buck configuration, the RAA489301 supports pass-through mode (PTM) in both forward and reverse directions. The PTM allows high efficiency for modes in which the input and output voltage are identical. The RAA489301 has independent control loops for the input voltage, input current, output voltage, and output current so that it can be used as a pre-regulator for a CPU power supply rail system.

The RAA489301 includes system operation functions such as the isolation MOSFET control, adjustable output voltage, programmable switching frequency, and a power-good indicator. The protection functionalities include OCP, OVP, UVP, and OTP. The RAA489301 has serial communication through SMBus/I2C that allows the programming of many critical parameters to deliver a customized solution. These programming parameters include but are not limited to, minimum input voltage, maximum output voltage, maximum input current limit, and maximum output current limit setting.

  • Single inductor 3-level buck controller
  • Proprietary modulator for flying capacitor balancing and smooth mode transition
  • Wide input voltage range: 4.5V to 24V
  • Wide output voltage range: 3V to 24V
  • Programmable switching frequency: up to 367kHz (734kHz at switching node effectively)
  • EXT5V pin to generate 5V or 10V gate drive voltage through internal charge pump
  • Low shutdown current: 25μA
  • Pass through mode (PTM) in both directions
  • Support pre-biased output with soft-start
  • Input and output current monitor
  • MOSFET drivers with adaptive shoot-through protection
  • Complete protection: OCP, OVP, UVP, and OTP
  • SMBus and I2C compatible
  • 32 Ld 4x4 TQFN package

Applications

  • Pre-regulator for a CPU power supply rail system
  • USB PD 3.0/3.1 systems
  • Robots and drones
  • Security surveillance

Documentation

= Featured Documentation
Type Title Date
Datasheet
RAA489301 Datasheet
Log in to Download PDF 7.19 MB
Datasheet - Short-form
RAA489301 Short-Form Datasheet
PDF 238 KB
Brochure
Battery Management Solutions Brochure
PDF 1.11 MB
3 items

Design & Development

RTKA489301DE0000BU Evaluation Board

RTKA489301DE0000BU

Evaluation
Learn More

High-Efficiency 3-Level Buck Converter Evaluation Board

Use our RTKA489301DE0000BU to evaluate the RAA489301, a high-efficiency three-level buck voltage controller. It ensures smooth transitions across different output and...

Featured Documents:
RTKA489301DE0000BU Evaluation Board Manual

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    Moisture Sensitivity Level (MSL)
    Price (USD) | 1ku
    Buy / Sample
    Part Number
    RAA489301A3GNP#AA0
    circleActive
    memory
    spa
    view_in_ar
    Samples Available
    		 TQFN Reel 3 Get Samples,
    RAA489301A3GNP#HA0
    circleActive
    memory
    spa
    view_in_ar
    Samples Available
    		 TQFN Reel 3 Get Samples,
    RAA489301ARGNP#AA0
    circleActive
    memory
    spa
    view_in_ar
    Samples Available
    		 TQFN Reel 3 Get Samples,
    RAA489301ARGNP#HA0
    circleActive
    memory
    spa
    view_in_ar
    Samples Available
    		 TQFN Reel 3 Get Samples,
    Parametric Table tips

    Tips for Using This Parametric Table:

    • Hide Filters button in header: Collapse or expands filters
    • Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
    • Reset button in header: Reset all filters to the page default
    • Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
    • Export button in header: Export the filtered results of the table to an Excel document
    • Filter parts search bar in header: Type to filter table results by part number
    • Hide column button in column headers: Select to hide columns in table
    • AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
    • Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
    • Document icon next to product name in row: View the featured document for this product
    • Chip icon next to the right of the document icon in row: View the block diagram for this product
    • Cart icon to the right of the chip icon: Indicates that samples are available for this product