3A, 17V Current Mode Synchronous Step-Down Converter

RT7296B

The RT7296B is a high-efficiency, 3A current mode synchronous step-down DC-DC converter with a wide input voltage range from 4.5V to 17V. The device integrates 80mΩ high-side and 30mΩ low-side MOSFETs to achieve high efficiency conversion. The current mode control architecture supports fast transient response and internal compensation. A cycle-by-cycle current limit function provides protection against shorted output. The RT7296B provides complete protection functions such as input under-voltage lockout, output under-voltage protection, over-current protection, and thermal shutdown. The PWM frequency is adjustable by the EN/SYNC pin. The RT7296B is available in the TSOT-23-8 (FC) package.

Applications

Industrial and Commercial Low Power Systems
Computer Peripherals
LCD Monitors and TVs
Set-top Boxes

Key Spec.

	RT7296B
Status	Active
Vin (min) (V)	4.5
Vin (max) (V)	17
Number of Outputs	1
Vout (min) (V)	0.807
Vout (max) (V)	5
Output Adj. Method	Resistor
Iout (max) (A)	3
Current Limit (typ) (A)	5
Freq (typ) (kHz)	500
Freq (min) (kHz)	200
Freq (max) (kHz)	2000
Ext Sync	Yes
Ron_HS (typ) (mOhm)	80
Ron_LS (typ) (mOhm)	30
Iq (typ) (mA)	0.8
Features	Adjustable Soft-Start;Built-in Bootstrap Switch;Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;External Synchronization;Force PWM;Internal Compensation;OCP;OTP;Stable with Ceramic Capacitor;UVP
Package Type	TSOT-28(FC)