台湾致新 G5691RB1U TDFN2X2-6 代理商主推

　　General Description

　　The G5691 provides complete control for a DC/DC

　　converter optimized for high-performance microprocessor

　　applications. It is operated on current mode architecture

　　for excellent line and load transient response.

　　1.5MHz operation frequency is allowing the

　　use of small surface mount inductor and capacitor.

　　The internal synchronous switch increases efficiency

　　and eliminates the need for an external Schottky diode.

　　The G5691 is a family of low-noise synchronous

　　step-down DC/DC converters that is ideally suited for

　　systems powered from a 1-cell Li-ion battery or from a

　　3-cell to 4-cell NiCd, NiMH, or alkaline battery. It can

　　also be used to USB-Based power system.

　　Features

　　Input voltage: 2.5V ~5.5V

　　High efficiency (95%)

　　No Schottky Diode Required

　　1A Output Current at 5V Input 3.3V Output

　　1.5MHz Switching Frequency

　　Built-in ON/OFF Function

　　Low Dropout Operation: 100% Duty Cycle

　　Thermal Protection

　　Tiny 6-Lead TDFN2X2 Package

　　RoHS Compliant

　　Applications

　　Mobile Phones

　　Wireless and DSL modems

　　Power Supply for Portable Devices