RAA489800ARGNP#HA0

The RAA489800 is a bidirectional, buck-boost voltage regulator that provides buck-boost voltage regulation and protection features. The advanced Renesas R3 TM 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.

Applications

• Tablets, Ultrabooks, power banks, mobile devices, and USB-C

Key features

• Bidirectional buck, boost, and buck-boost operatior
• 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