3A, 2MHz, Synchronous Step-Down Converter

RT8055

The RT8055 is a high efficiency synchronous, step-down DC/DC converter. Its input voltage range is from 2.6V to 5.5V and provides an adjustable regulated output voltage from 0.8V to 5V while delivering up to 3A of output current.
The internal synchronous low on-resistance power switches increase efficiency and eliminate the need for an external Schottky diode. The switching frequency is set by an external resistor. The 100% duty cycle provides low dropout operation extending battery life in portable systems. Current mode operation with external compensation allows the transient response to be optimized over a wide range of loads and output capacitors.
The RT8055 is operated in forced continuous PWM Mode which minimizes ripple voltage and reduces the noise and RF interference.
The RT8055 is available in the WDFN-10L 3x3 and SOP-8 (Exposed Pad) packages.

Applications

Portable Instruments
Battery-Powered Equipment
Notebook Computers
Distributed Power Systems
IP Phones
Digital Cameras
3G/3.5G Data Card

Key Spec.

	RT8055
Status	Active
Vin (min) (V)	2.6
Vin (max) (V)	5.5
Number of Outputs	1
Vout (min) (V)	0.8
Vout (max) (V)	5
Output Adj. Method	Resistor
Iout (max) (A)	3
Current Limit (typ) (A)	4
Freq (typ) (kHz)	1800
Freq (min) (kHz)	300
Freq (max) (kHz)	2000
Ext Sync	No
Ron_HS (typ) (mOhm)	100
Ron_LS (typ) (mOhm)	100
Iq (typ) (mA)	0.5
Features	100% Duty Cycle;Adjustable Frequency;Current Mode Control;Force PWM;OCP;Stable with Ceramic Capacitor;UVP
Package Type	PSOP-8;WDFN3x3-10