MIC2193/MI***690系列替换方案。
XC9220/XC9221系列是多用途, ***DC/DC控制器IC可替代MIC2193/MI***690芯片。
XC9220/XC9221系列适应环保要求：与EU ROHS规格对应、无铅。工作电压范围：2.8V~16V （******大额定值：18.0V ），输出电压外部设定：0.9V （精度：&plu***n;1.5%），控制方式： WM/PFM自动切换，软启动功能：4ms，工作温度：-40°C--+85°C。
XC9221系列是PWM/PFM控制,当负载变轻它能从PWM自动切换到PFM,因而在整个负载范围都能保持***率。关于软启动时间, XC9221是内部设定为4毫秒.具有内置的U.V.L.O. (欠压锁闭)功能,当输入电压低至2.3V 或更低的时候,外部的P沟道开关管会被强制关断。有两种封装SOT-25 和USP-6可供选择。
更多替代型号：
| TOREX品牌 | 替代的品牌 | 可替代的型号 |
| XC9128 | Maxim Semiconductor | MAX1947 |
| XC9235 | Maxim Semiconductor | MAX1733 |
| XC9221x035xR | Micrel Semiconductor | MIC2193 |
| XC9221A09AMR | Micrel Semiconductor | MI***690 |
| XC9223B082AR | Micrel Semiconductor | MIC3838 |
| XC9220 | Micrel Semiconductor | MIC2193 |
| XC9224 | Micrel Semiconductor | MIC3838 |
| XC6368CxxxMR | Microchip | TC110 |
| XC9201 | Microchip | TC105 |
| XC6372 | Microchip | TC115 |
| XC6366CxxxMR | Microchip | TC105 |
| XC9235 | National Semiconductor | LM3674 |
| XCM517 | National Semiconductor | LM2717 |
| XC9208 | National Semiconductor | LM3677 |
| XC9210 | National Semiconductor | LM2650 |
| XC6371 | National Semiconductor | LM2703 |
| XC9119D10AMR | National Semiconductor | LM2703 |
| XC6365A303ER | National Semiconductor | LM3677 |
| XC9206A18MR | National Semiconductor | LM3677 |
| XC9207A18MR | National Semiconductor | LM3677 |
| XC9213B103VR | National Semiconductor | LM2594 |
| XC9213B103VR | National Semiconductor | LM2676 |
| XC9213B103VR | National Semiconductor | LM2737 |
| XC9301 | National Semiconductor | LM2716 |
| XC9302 | National Semiconductor | LM2716 |
| XC9235 | On Semiconductors | NCP1522 |
| XC9236 | On Semiconductors | NCP1522 |
| XC9237 | On Semiconductors | NCP1522 |
| XC9103 | On Semiconductors | NCP1406 |
| XC9105 | On Semiconductors | NCP1406 |
| XC9106 | On Semiconductors | NCP1403 |
| XC9107 | On Semiconductors | NCP1403 |
| XC9201 | On Semiconductors | NCP1550 |
| XC9210 | On Semiconductors | NCP1508 |
| XC9111 | On Semiconductors | NCP1400 |
| XC9104B095xR | On Semiconductors | NCP1406 |
| XC911950AMR | On Semiconductors | NCP1402 |