MAX1653：高效率、PWM、降压型DC-DC控制器，16引脚QSOP封装
10A DSP/CPU核电源，提供二次侧输出，采用节省空间的QSOP封装
The MAX1652-MAX1655 are high-efficiency, pulse-width-modulated (PWM), step-down DC-DC controllers in small QSOP packages. The MAX1653/MAX1655 also come in 16-pin narrow SO packages that are pin-compatible upgrades to the popular MAX797. Improvements include higher duty-cycle operation for better dropout, lower quiescent supply currents for better light-load efficiency, and an output voltage down to 1V (MAX1655). The MAX1652-MAX1655 achieve up to 96% efficiency and deliver up to 10A using a unique Idle Mode™ synchronous-rectified PWM control scheme. These devices automatically switch between PWM operation at heavy loads and pulse-frequency-modulated (PFM) operation at light loads to optimize efficiency over the entire output current range. The MAX1653/MAX1655 also feature logic-controlled, forced PWM operation for noise-sensitive applications. All devices operate with a selectable 150kHz/300kHz switching frequency, which can also be synchronized to an external clock signal. Both external power switches are inexpensive N-channel MOSFETs, which provide low resistance while saving space and reducing cost. The MAX1652 and MAX1654 have an additional feedback pin that permits regulation of a low-cost second output tapped from a transformer winding. The MAX1652 provides an additional positive output. The MAX1654 provides an additional negative output. The MAX1652-MAX1655 have a 4.5V to 30V input voltage range. The MAX1652/MAX1653/MAX1654's output range is 2.5V to 5.5V while the MAX1655's output range extends down to 1V. An evaluation kit (MAX1653EVKit) is available to speed designs.
关键特性
| MAX1652、MAX1653、MAX1654、MAX1655功能框图 应用
|
数据手册DataSheet
| 语言 | 下载文件 | 备注 |
|---|---|---|
| 英文 | MAX1652-MAX1655.pdf | Rev 1; 07/1998 |
关键参数
| Part Number | VIN (V) | VIN (V) | VOUT1 (V) | VOUT1 (V) | Preset VOUT (V) | Output Adjust. Method | IOUT1 (A) | Switch Type | Synchronous Switching | DC-DC Outputs | Oper. Freq. (kHz) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | min | max | max | See Notes | ||||||||
| MAX1652 | 4.5 | 30 | 2.5 | 5.5 |
|
| 10 | External | Yes | 2 | 340 | QSOP/16 | $3.51 @1k |
| MAX1653 | 2.5 | 1 |
| ||||||||||
| MAX1654 | 2.5 | 2 | QSOP/16 | ||||||||||
| MAX1655 | 1 | 1 |
| ||||||||||
开发工具
技术资料
- Reduce the Chances of Human Error: Part 1, Power and Ground
- Increase the Power of a Buck (Step-Down) Switching Power Supply IC
- Input and Output Noise in Buck Converters Explained
质量和环境数据
订购型号
| 型号 | 状况 | 推荐替代产品 | 封装 | 温度 | RoHS/无铅 |
|---|---|---|---|---|---|
| MAX1653EEE | 停止供货 | MAX1653EEE+ | QSOP,；16引脚；30.9mm² | -40°C至+85°C | RoHS/无铅：否 |
| MAX1653EEE+ | 生产中 | QSOP,；16引脚；30.9mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX1653EEE+T | 生产中 | QSOP,；16引脚；30.9mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX1653EEE-T | 停止供货 | MAX1653EEE+T | QSOP,；16引脚；30.9mm² | -40°C至+85°C | RoHS/无铅：否 |
| MAX1653ESE | 停止供货 | MAX1653ESE+ | SOIC(N),；16引脚；61.9mm² | -40°C至+85°C | RoHS/无铅：否 |
| MAX1653ESE+ | 生产中 | SOIC(N),；16引脚；61.9mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX1653ESE+T | 生产中 | SOIC(N),；16引脚；61.9mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX1653ESE-T | 停止供货 | MAX1653ESE+T | N.SO；16引脚 | -40°C至+85°C | 参考数据资料 |
- MAX1652-MAX1655.pdf MAX1655
- Reduce the Chances of Human Error: Part 1, Power and Ground MAX5481
- Increase the Power of a Buck (Step-Down) Switching Power Supply IC MAX1653
- Input and Output Noise in Buck Converters Explained MAX1653EVKIT
- MAX1653.pdf MAX1653
- 功能框图 MAX1655
