3A, 18V, 800kHz Synchronous Step-Down Converter

RT7297C

The RT7297C is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 3A output current from a 4.5V to 18V input supply. The RT7297C's current mode architecture and external compensation allow the transient response to be optimized over a wide input voltage range and loads. Cycle-by-cycle current limit provides protection against shorted outputs, and soft-start eliminates input current surge during start-up. The RT7297C also provides under voltage protection and thermal shutdown protection. The low current (<3μA) shutdown mode provides output disconnection, enabling easy power management in battery-powered systems. The RT7297C is available in an SOP-8 (Exposed Pad) package.

应用

Wireless AP/Router
Set-Top-Box
Industrial and Commercial Low Power Systems
LCD Monitors and TVs
Green Electronics/Appliances
Point of Load Regulation of High-Performance DSPs

主要规格

	RT7297C
Status	Active
Vin (min) (V)	4.5
Vin (max) (V)	18
Number of Outputs	1
Vout (min) (V)	0.8
Vout (max) (V)	12
Output Adj. Method	Resistor
Iout (max) (A)	3
Current Limit (typ) (A)	5.1
Freq (typ) (kHz)	800
Ext Sync	No
Ron_HS (typ) (mOhm)	110
Ron_LS (typ) (mOhm)	90
Iq (typ) (mA)	0.8
Features	Adjustable Soft-Start;Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;Force PWM;OCP;OTP;Stable with Ceramic Capacitor;UVP
Package Type	PSOP-8