Short-Form Datasheet
RAA489800
Bidirectional Buck-Boost Voltage Regulator
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.
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
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.
▪ 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
The RAA489800 includes various system operation
functions such as the Forward mode enable pin,
Reverse mode enable pin, programmable soft-start
2
▪ SMBus and auto-increment I C compatible
time, and adjustable forward and reverse V
. It also
▪ Pb-free (RoHS compliant)
OUT
has forward and reverse power-good indicators. The
protection functionalities include OCP, OVP, UVP, and
OTP.
▪ 32 Ld 4x4 TQFN package
▪ UL 2367, IEC 62368-1: File No. E520109
Applications
The RAA489800 has serial communication through
2
SMBus/I C that allows programming of many critical
▪ Tablets, Ultrabooks, power banks, mobile devices,
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.
and USB-C
R16DO0012EU0102 Rev.1.02
Oct 19, 2021
Page 1
© 2019 Renesas Electronics