4A, 23V, 500kHz, ACOT^® Synchronous Buck Converter

RT6219

The RT6219 is a synchronous Buck converter with Advanced Constant On-Time (ACOT^®) mode control which provides a very fast transient response with no external compensators. The RT6219 operates from 5V to 23V input voltage, provides complete protection functions including Over Current Protection(OCP), Under Voltage Protection (UVP) and Over Voltage Protection (OVP). This IC also provides a 1.5ms internal soft-start function and an open-drain power good indicator.

Applications

Laptop Computers
Tablet PCs
Networking Systems
Servers
Personal Video Recorders
Flat Panel Television and Monitors
Distributed Power Systems

Key Spec.

	RT6219A	RT6219B
Status	Active	Active
Vin (min) (V)	5	5
Vin (max) (V)	23	23
Number of Outputs	1	1
Vout (min) (V)	0.6	0.6
Vout (max) (V)	5	5
Output Adj. Method	Resistor	Resistor
Iout (max) (A)	4	4
Current Limit (typ) (A)	6	6
Freq (typ) (kHz)	500	500
Ext Sync	No	No
Ron_HS (typ) (mOhm)	67	67
Ron_LS (typ) (mOhm)	41	41
Iq (typ) (mA)	0.1	0.11
Features	ACOT Control;Built-in Bootstrap Switch;COT Control;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;Fast Transient Response;Internal Compensation;OCP;OTP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP	ACOT Control;Built-in Bootstrap Switch;COT Control;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;Fast Transient Response;Force PWM;Internal Compensation;OCP;OTP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP
Package Type	WDFN3x3-10	WDFN3x3-10