6A, 18V, 700kHz ACOT^TM Synchronous Step-Down Converter with VID Control

RT6203F

The RT6203F is an adaptive on-time mode synchronous Buck converter. The main control loop of the RT6203F uses an adaptive on-time mode control which provides a very fast transient response with no external components. The RT6203F operates from 4.5V to 18V VIN input. After the initial power-up, the output voltage can be changed by codes sent into the IC via an I²C compatible VID control bus. There are special codes which can be used to program current limit level and thermal shutdown level. Shutdown and startup can be also programmed by special codes. The device also features an internal soft-start time. Output voltage is adjustable by VID code setting. V_OUT range is between 0.6V to 1.62V

Applications

Industrial and Commercial Low Power Systems
Computer Peripherals
LCD Monitors and TVs
Green Electronics/Appliances
Point of Load Regulation for High-Performance DSPs, FPGAs, and ASICs

Key Spec.

	RT6203F
Status	Active
Vin (min) (V)	4.5
Vin (max) (V)	18
Number of Outputs	1
Vout (min) (V)	0.6
Vout (max) (V)	1.62
Output Adj. Method	Digital
Iout (max) (A)	6
Current Limit (typ) (A)	10;4.3;7.15
Freq (typ) (kHz)	700
Ext Sync	No
Ron_HS (typ) (mOhm)	48
Ron_LS (typ) (mOhm)	25
Iq (typ) (mA)	0.55
Features	ACOT Control;Adjustable Current Limit;Built-in Bootstrap Switch;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;I2C;OCP;OTP;PSM;Stable with Ceramic Capacitor
Package Type	PSOP-8

Features

VID Control Range Via I²C Compatible Interface :
► 0.6V to 0.7V in 20mV Steps
► 0.7V to 1.2V in 10mV Steps
► 1.2V to 1.62V in 20mV Steps
Adjustable Current Limit
Adjustable Thermal Shutdown
Fast Transient Response
Steady 700kHz Switching Frequency
Optimized for All Ceramic Capacitors
Internal Soft-Start
Input Under-Voltage Lockout
Thermal Shutdown
RoHS Compliant and Halogen Free