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XC9302A332MR Step-Up&Down DC/DC Converter SOT-153 标记K320 PWM/PFM Switching Step-Up&Down DC/DC Converter
| 控制方式 MODE | PWM/PFM |
| 输入电压 Input Voltage | 2~10V |
| 输出电压 Output Voltage | 3.3V |
| 输出电流 Output Current | 250mA |
| 振荡频率 Oscillation Frequency | 180KHz |
| Description & Applications | PWM,PWM/PFM Switching Step-Up & Down DC/DC Converter Controller ICs ■GENERAL DESCRIPTION The XC9301/XC9302 series are step-up/down DC/DC converter controller ICs with fast, low ON resistance drivers built-in. A versatile, large output current, step-up/down DC/DC converter can be realized using only 4 type of basic external components two transistors, one inductor, two diodes and capacitors. Output voltage is selectable in 0.1V increments within a 2.4V ~ 6.0V (±2.5% accuracy) range and switching frequency is set at 180kHz or 300kHz. The XC9302 series switches from PWM to PFM control during light loads and the series offers high efficiencies from light loads through to large output currents. Soft-start time is internally set to 10ms which offers protection against inrush currents when the power is turned on and also against voltage overshoot. During shutdown (CE pin = L), consumption current can be reduced to as little as 0.5μA or less. ■APPLICATIONS ●Mobile phones ●PDAs ●Palmtop computers ●Portable audio equipment ●Various power supplies |
| 描述与应用 | PWM，PWM / PFM开关升压及降压DC / DC转换器控制器集成电路 ■概述 XC9301/XC9302系列升降压DC/ DC转换器控制器IC，具有速度快，低导通电阻内建的驱动程序。一 多功能，大输出电流，使用只有4个类型的基本的外部元件，可实现升降压DC/ DC转换器 两个晶体管，一个电感器，二极管和电容器。 在一个2.4V〜6.0V（精度±2.5％）范围内，开关频率，输出电压可在0.1V增量设置 在180KHZ，300KHZ。 XC9302系列交换机从PWM到PFM控制，在轻负载和系列提供高效率光 大输出电流的负载。 软启动时间在内部设定为10ms的提供防止浪涌电流时的电源接通时，也 防止电压过冲。 在关断期间（CE引脚= L），消耗电流可以降低到尽可能少0.5μA以下。 ■应用 ●手机 ●掌上电脑 ●掌上电脑 ●便携式音频设备 ●各种电源 |
