器件名称: LP3202-A18B5F
功能描述: 1.5MHz, 650mA, High Efficiency Synchronous PWM Step-Down DC/DC Convert
文件大小: 759.72KB 共11页
简 介:LP3202
1.5MHz, 650mA, High Efficiency Synchronous PWM Step-Down DC/DC Convert
General Description
The LP3202 is a constant frequency, current mode, PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency. The 2.1V to 5.5V input voltage range makes the LP3202 is ideally suited for portable electronic devices that are powered from 1-cell Li-ion battery or from 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. The internal synchronous switch increases efficiency while eliminate the need for an external Schottky diode.The switching ripple is easily smoothed-out by small package filtering elements due to a fixed operation frequency of 1.5MHz. This along with small SOT-23-5 package provide small PCB area application. Other features include soft start, lower internal reference voltage with 2% accuracy, over temperature protection, and over current protection.
Features
High Efficiency: 93% 1.5MHz Fixed-Frequency PWM Operation Adjustable Output From 0.6V to VIN 1.2V, 1.5V, 1.8V, 2.5V, 2.8V and 3.3V Fixed 650mA Output Current, 1.1A Peak Current No Schottky Diode Required 100% Duty Cycle Low Dropout Operation Available in SOT23-5 Package Short Circuit and Thermal Protection Over Voltage Protection Low than 1A Shutdown Current
Applications
Portable Media Players/MP3 players Cellular and Smart mobile ……
