General Description

The RT8005 is a high-efficiency synchronous buck PWM converter with integrated P-Channel andN-Channel power MOSFET switches. Capable of delivering 1Aoutput current over a wide input voltage range of 2.4V to 5.5V, the RT8005 is ideally suited for portable applications powered by a single Li-Ion battery or by 3-cell NiMH/NiCd batteries. The device operates at 2MHz PWM switching fixed frequency, can use smaller CIN, COUT capacitor and inductor.

Features

● 2.4V to 5.5V Input Voltage Range

● Adjustable Output from 0.5V to VIN

● Guaranteed 1A Output Current

● Accurate Reference : 0.5V (±1.5)

● Up to 90Conversion Efficiency

● Typical Quiescent Current : 200mA

● Integrated Low RDS(ON) High- and Low-Side Power MOSFET Switches : 230mW and 180mW

● Current Mode PWM Operation

● Fixed Frequency : 2MHz

● 100 Maximum Duty Cycle for Lowest Dropout

● Internal Soft-Start

● No Schottky Diode Required

● Over-Temperature and Over-Current Protection

● Small 10-Lead VDFN 3x3 Package

● RoHS Compliant and 100 Lead (Pb)-Free

Applications

● Battery-Powered Equipments

● Low Power CPU and DSP Supplies

● Digital Cameras and Hard Disks

● Protable Instruments and Notebook Computers

● Celluar Phones, PDAs, and Handheld PCs

● USB-Based DSLModems and Other Network Interface Cards