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
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.
Support
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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