MAX1709：4A、低噪声、高频、升压型DC-DC转换器
3V至5V升压型DC-DC，可提供4A输出，内置开关
The MAX1709 sets a new standard of space savings for high-power, step-up DC-DC conversion. It delivers up to 20W at a fixed (3.3V or 5V) or adjustable (2.5V to 5.5V) output, using an on-chip power MOSFET from a +0.7V to +5V supply. Fixed-frequency PWM operation ensures that the switching noise spectrum is constrained to the 600kHz fundamental and its harmonics, allowing easy postfiltering for noise reduction. External clock synchronization capability allows for even tighter noise spectrum control. Quiescent power consumption is less than 1mW to extend operating time in battery-powered systems. Two control inputs (ONA, active-low ONB) allow simple push-on, push-off control through a single momentary pushbutton switch, as well as conventional on/off logic control. The MAX1709 also features programmable soft-start and current limit for design flexibility and optimum performance with batteries. The MAX1709 is supplied in both a high-power TSSOP package, which allows a 10ARMS switch current and a 4A output, and a narrow SO package, which supplies a 2.4A output with a switch rated at 6ARMS. Although the narrow SO device has a lower RMS switch rating, it has the same peak switch current rating as the TSSOP device, and so can supply 4A loads intermittently. If loads of 2A or less are required, refer to the MAX1708.
关键特性
| MAX1709：典型工作电路 应用
|
数据手册DataSheet
| 语言 | 下载文件 | 备注 |
|---|---|---|
| 英文 | MAX1709.pdf | Rev 3; 03/2015 |
关键参数
| Part Number | VIN (V) | VIN (V) | VOUT1 (V) | VOUT1 (V) | Preset VOUT (V) | IOUT1 (A) | Output Adjust. Method | Switch Type | ICC (mA) | DC-DC Outputs | Oper. Freq. (kHz) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | min | max | max | typ | See Notes | |||||||
| MAX1709 | 0.7 | 5 | 2.5 | 5.5 |
| 4 |
| Internal | 0.2 | 1 | 600 |
| $4.71 @1k |
开发工具
质量和环境数据
相关产品
- MAX1708：高频、大功率、低噪声、升压型DC-DC转换器
- MAX1763：1.5A、低噪声、1MHz、升压型DC-DC转换器
- MAX1700：1节至3节电池、大功率(1A)、低噪声、升压型DC-DC转换器
- MAX1701：1节至3节电池、大功率(1A)、低噪声、升压型DC-DC转换器
- MAX1705：1至3节电池、大电流、低噪声、升压型DC-DC转换器，带有线性稳压器
订购型号
| 型号 | 状况 | 推荐替代产品 | 封装 | 温度 | RoHS/无铅 |
|---|---|---|---|---|---|
| MAX1709ESE | 停止供货 | MAX1709ESE+ | SOIC(N),；16引脚；62mm² | -40°C至+85°C | RoHS/无铅：否 |
| MAX1709ESE+ | 生产中 | SOIC(N),；16引脚；62mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX1709ESE+T | 生产中 | SOIC(N),；16引脚；62mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX1709ESE-T | 停止供货 | MAX1709ESE+T | N.SO；16引脚 | -40°C至+85°C | 参考数据资料 |
| MAX1709EUI | 停止供货 | MAX1709EUI+ | TSSOP-EP,；28引脚；63.7mm² | -40°C至+85°C | RoHS/无铅：否 |
| MAX1709EUI+ | 生产中 | TSSOP-EP,；28引脚；63.7mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX1709EUI+T | 生产中 | TSSOP-EP,；28引脚；63.7mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX1709EUI-T | 停止供货 | TSSOP-EP,；28引脚；63.7mm² | -40°C至+85°C | RoHS/无铅：否 | |
| MAX1709EUI/GG8 | 生产中 | TSSOP-EP,；28引脚；63.7mm² | -40°C至+85°C | RoHS/无铅：否 | |
| MAX1709EUI/GG8-T | 停止供货 | MAX1709EUI+ | TSSOP； | -40°C至+85°C | 参考数据资料 |
- MAX1709.pdf MAX1709
- MAX1709.pdf MAX1709
- MAX1709.pdf MAX1709
- MAX1709.pdf MAX1709
- 典型工作电路 MAX1709
