5A, 36V, 500kHz Step-Down Converter

RT8279

The RT8279 is a step-down regulator with an internal power MOSFET. It achieves 5A of continuous output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization.
For protection, the RT8279 provides cycle-by-cycle current limiting and thermal shutdown protection. An adjustable soft-start reduces the stress on the input source at startup. In shutdown mode, the regulator draws only 25μA of supply current.
The RT8279 requires a minimum number of readily available external components, providing a compact solution. The RT8279 is available in the SOP-8 (Exposed Pad) package.

Applications

Distributive Power Systems
Battery Charger
DSL Modems
Pre-regulator for Linear Regulators

Key Spec.

	RT8279
Status	Active
Vin (min) (V)	5.5
Vin (max) (V)	36
Number of Outputs	1
Vout (min) (V)	1.222
Vout (max) (V)	26
Output Adj. Method	Resistor
Iout (max) (A)	5
Current Limit (typ) (A)	7.5
Freq (typ) (kHz)	500
Freq (min) (kHz)	425
Freq (max) (kHz)	575
Ext Sync	No
Ron_HS (typ) (mOhm)	110
Iq (typ) (mA)	0.6
Features	Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;Force PWM;Internal Compensation;OCP;OTP;Stable with Ceramic Capacitor;UVP
Package Type	PSOP-8