高压(36V)降压型DC-DC控制器,µMAX封装
The MAX1744/MAX1745 are step-down DC-DC controllers capable of handling up to 36V inputs. These parts use a proprietary current-limited control scheme for excellent light- and full-load efficiency, while their 330kHz (max) switching frequency permits small external components for space-critical applications. Operation to 100% duty cycle permits the lowest possible dropout voltage. The MAX1744 contains an internal feedback network that provides a pin-selectable output voltage of either 3.3V or 5V. The MAX1745 uses an external feedback network to generate an adjustable output voltage between 1.25V and 18V. The MAX1744/MAX1745 are available in a space-saving 10-pin µMAX® package.
语言 | 下载文件 | 备注 |
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英文 | MAX1744-MAX1745.pdf | Rev 4; 02/2010 |
Part Number | VIN (V) | VIN (V) | VOUT1 (V) | VOUT1 (V) | Preset VOUT (V) | Output Adjust. Method | IOUT1 (A) | Switch Type | DC-DC Outputs | Oper. Freq. (kHz) | Package/Pins | Budgetary Price |
---|---|---|---|---|---|---|---|---|---|---|---|---|
min | max | min | max | max | See Notes | |||||||
MAX1744 | 4.5 | 36 | 3.3 | 5 |
|
| 10 | External | 1 | 330 | µMAX/10 | $2.75 @1k |
MAX1745 | 1.25 | 18 | - | Resistor | µMAX/10 | $3.16 @1k | ||||||
型号 | 状况 | 推荐替代产品 | 封装 | 温度 | RoHS/无铅 |
---|---|---|---|---|---|
MAX1744AUB | 生产中 | µMAX,;10引脚;15.4mm² | -40°C至+125°C | RoHS/无铅:否 | |
MAX1744AUB+ | 生产中 | µMAX,;10引脚;15.4mm² | -40°C至+125°C | RoHS/无铅:无铅 | |
MAX1744AUB+T | 生产中 | µMAX,;10引脚;15.4mm² | -40°C至+125°C | RoHS/无铅:无铅 | |
MAX1744AUB-T | 停止供货 | MAX1744AUB+T | uMAX;10引脚 | -40°C至+125°C | 参考数据资料 |
MAX1744AUB/V+ | 生产中 | µMAX,;10引脚;15.4mm² | -40°C至+85°C | RoHS/无铅:无铅 | |
MAX1744AUB/V+T | 停止供货 | µMAX,;10引脚;15.4mm² | -40°C至+85°C | RoHS/无铅:无铅 | |
MAX1744EUB | 生产中 | µMAX,;10引脚;15.4mm² | -40°C至+85°C | RoHS/无铅:否 | |
MAX1744EUB+ | 生产中 | µMAX,;10引脚;15.4mm² | -40°C至+85°C | RoHS/无铅:无铅 | |
MAX1744EUB+T | 生产中 | µMAX,;10引脚;15.4mm² | -40°C至+85°C | RoHS/无铅:无铅 | |
MAX1744EUB-T | 停止供货 | MAX1744EUB+T | µMAX,;10引脚;15.4mm² | -40°C至+85°C | RoHS/无铅:否 |
型号 | 状况 | 推荐替代产品 | 封装:类型 引脚 占位面积封装图 编码/变更 * | 温度 | RoHS/无铅? |
MAX1744EUB/V+ | 生产中 | µMAX,;10引脚;15.4mm² | -40°C至+85°C | RoHS/无铅:无铅 | |
MAX1744EUB/V+T | 生产中 | µMAX,;10引脚;15.4mm² | -40°C至+85°C | RoHS/无铅:无铅 |