Overview
Description
The RAA489800 is a bidirectional, buck-boost voltage regulator that provides buck-boost voltage regulation and protection features. The advanced Renesas R3™ Technology provides high light-load efficiency, fast transient response, and seamless DCM/CCM transitions. The RAA489800 takes input power from a wide range of DC power sources up to 23V (such as conventional AC/DC adapters (ADP), USB PD ports, travel ADP) and safely converts it to a regulated voltage up to 21V.
The RAA489800 can also convert a wide range DC power source connected at its output (system side) to a regulated voltage to its input (ADP side). This bidirectional buck-boost regulation feature makes the RAA489800's application very flexible. In addition to 4-switch buck-boost configuration, it can also support 2-switch Buck mode operation. The RAA489800 includes various system operation functions such as the Forward mode enable pin, Reverse mode enable pin, programmable soft-start time, and adjustable forward and reverse VOUT. It also has forward and reverse power-good indicators. The protection functionalities include OCP, OVP, UVP, and OTP.
The RAA489800 has serial communication through SMBus/I2C that allows programming of many critical parameters to deliver a customized solution. These programming parameters include, but are not limited to: output current limit, input current limit, and output voltage setting.
Features
- Bidirectional buck, boost, and buck-boost operation
- Configurable for 4-switch buck-boost or 2-switch buck operation
- Input voltage range: 3.8V to 23V (no dead zone)
- Output voltage: up to 21V
- Up to 1MHz switching frequency
- Pin programmable soft-start time
- LDO output for VDD and VDDP
- System FAULT status ALERT function
- Input/output internal discharge function
- Active switching for negative voltage transitions
- Pass Through mode in both directions
- Forward and Reverse mode enable pins
- OCP, OVP, UVP, and OTP protection
- Absolute overvoltage protection
- SMBus and auto-increment I2C compatible
- Pb-free (RoHS compliant)
- 32 Ld 4x4 TQFN package
- UL 2367, IEC 62368-1: File No. E520109
Comparison
Applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 2.13 MB | |
| Product Change Notice | PDF 169 KB | |
| Brochure | PDF 1.11 MB | |
| Product Change Notice | PDF 179 KB | |
| Manual - Software | PDF 1.28 MB | |
| Application Note | PDF 509 KB | |
| Application Note | PDF 397 KB | |
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Design & Development
Software & Tools
Boards & Kits
Evaluation
RTK-251-BuckBoostConverter2
Active
100W USB Type-C DC Input Module
This is a USB-certified reference design for dual-port sourcing ports. This reference design converts a DC input to two USB Type-C® source ports. USB Type-C® source ports support Programmable Power Supply (PPS).
This reference design has two USB Type-C ports, making it a suitable solution for...
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Evaluation
RTK-251-DRPEVB
Active
100W USB Type-C Input/Output Power Converter
This is the single port reference design that converts USB Type-C® input power to DC output or DC input to USB Type-C® output sourcing power.
The USB Type-C® port is dual role power (DRP) and supports both sink and source modes.
By using a dedicated FW, this board can also function as a USB PD...
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Evaluation
RTKA489800DE0000BU
Active
Bidirectional Buck-Boost Voltage Regulator Evaluation Board
The RAA489800 is a bidirectional, buck-boost voltage regulator that provides buck-boost voltage regulation and protection features. The advanced Renesas R3™ Technology provides high light-load efficiency, fast transient response, and seamless DCM/CCM transitions.
The RTKA489800DE0000BU takes...
Recommended Documents:
Development
JP214/RTK-251-SinkAdapter
Active
100W USB Type-C Input Power Converter
This is a USB-certified development kit to convert USB-C input power supplied by a USB Type-C® sourcing device to DC output.
Because there are several losses on the cable, BB-VR, and board, the USB Power Delivery (PD) controller compensates for the USB-C input level to achieve the expected DC...
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Test This Board Remotely
Available on Lab on the Cloud, use our PC-based GUI to instantly start configuring and testing designs in our virtual lab, no physical board needed.
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
Product Options
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Support
Support Communities
Get quick technical support online from Renesas Engineering Community technical staff.
Support Communities
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RAA489800's abnormal operation at Light Load (500mA)
Dear, All. I made a power board using RAA489800 IC. At some case, I found abnormal operation. [Case1] Vin = 12V Vout = 13.5V System Side Load = 500mA ==> periodic oscillation phenomenon , Yellow, Red Color Waveform : Vout [Case2] But, at heavy load(1.5A), It's Okay. I think that this phenomenon ...
Jul 9, 2024 -
Where is the Firmware generation support tool (PDC image generator, PDC-IMGGEN) to compile ROM file for R9A02G011?
I like to use in the next project the R9A02G011 (USB Power Delivery Controller) and RAA489800 (Bidirectional Buck-Boost Voltage Regulator), I understand Renesas has developed the Flash memory image data generator (PDC-IMGGEN), where to find it ?
Apr 25, 2024