深圳市桑尼奇科技有限公司

 RT8059 1.5MHz, 1A, High Efficiency PWM Step-Down DC/DC Converter

1、芯片描述：

The RT8059 is a high efficiency Pulse Width Modulated (PWM) step-down DC/DC converter, capable of delivering 1A output current over a wide input voltage range from 2.8V to 5.5V. The RT8059 is ideally suited for portable electronic devices that are powered by 1-cell Li-ion battery or by other power sources within the range, such as cellular phones, PDAs and handy-terminals. Internal synchronous rectifier with low RDS(ON) dramatically reduces conduction loss at PWM mode. No external Schottky diode is required in practical applications. The RT8059 automatically turns off the synchronous rectifier when the inductor current is low and enters discontinuous PWM mode. This can increase efficiency in light load condition. The RT8059 enters low dropout mode when normal PWM cannot provide regulated output voltage by continuously turning on the upper P-MOSFET. The RT8059 enters shutdown mode and consumes less than 0.1μA when the EN pin is pulled low. The switching ripple can be easily smoothed out by small package filtering elements due to a fixed operation frequency of 1.5MHz. This along with small TSOT-23-5 package provides small PCB area application. Other features include soft-start, lower internal reference voltage with 2% accuracy, over temperature protection, and over current protection（点击即可咨询芯片详细信息）.

2、芯片的特征：

·Wide Input Voltage from 2.8V to 5.5V ·Adjustable Output from 0.6V to VIN l·1A Output Current · 95% Efficiency l· No Schottky Diode Required l·1.5MHz Fixed Frequency PWM Operation l·Small TSOT-23-5 Package l RoHS Compliant and Halogen Free

3、应用场景：

·NIC Card · Cellular Telephones · Personal Information Appliances l ·Wireless and DSL Modems ·MP3 Players l·Portable Instruments

4、应用线路图：

5、封装（脚位）

6、订购信息：

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建议零售价格仅用于预算，以元为单位，并且价格是浮动的。 若要查询有关批量价格、本地货币价格或交付报价的信息，请与公司联系。（点击咨询）