数据手册：MAX1709 3V至5V升压型DC-DC，可提供4A输出，内置开关 .pdf [英文Rev.2(PDF,392kB)]
{状况：生产中。}
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.
产品关键特性
- On-Chip 10A Power MOSFET
- 5V, 4A Output from a 3.3V Input
- Fixed 3.3V or 5V Output Voltage or Adjustable (2.5V to 5.5V)
- Input Voltage Range Down to 0.7V
- Low Power Consumption
- 1mW Quiescent Power
- 1µA Current in Shutdown Mode
- Low-Noise, Constant Frequency Operation (600kHz)
- Synchronizable Switching Frequency (350kHz to 1000kHz)
| 应用与使用范围
- 手持通信装置的3.6V或5V RF PA
- 本地2.5V至3.3V或5V转换器
- 本地3.3V至5V转换器
- 路由器、服务器、工作站、卡架
|
典型工作电路
芯片订购型号
| 订购型号 | 产品状态 | 封装形式 | 工作温度 | RoHS/无铅 |
| MAX1709ESE | 生产中 | SOIC(N)；16引脚；62mm²封装信息 | -40°C至+85°C | RoHS/无铅：否材料分析 |
| MAX1709ESE+ | 生产中 | SOIC(N)；16引脚；62mm²封装信息 | -40°C至+85°C | RoHS/无铅：无铅材料分析 |
| MAX1709ESE+T | 生产中 | SOIC(N)；16引脚；62mm²封装信息 | -40°C至+85°C | RoHS/无铅：无铅材料分析 |
| MAX1709ESE-T | 生产中 | N.SO；16引脚封装信息 | -40°C至+85°C | 参考数据资料 |
| MAX1709EUI | 生产中 | TSSOP-EP；28引脚；63.7mm²封装信息 | -40°C至+85°C | RoHS/无铅：否材料分析 |
| MAX1709EUI+ | 生产中 | TSSOP-EP；28引脚；63.7mm²封装信息 | -40°C至+85°C | RoHS/无铅：无铅材料分析 |
| MAX1709EUI+T | 生产中 | TSSOP-EP；28引脚；63.7mm²封装信息 | -40°C至+85°C | RoHS/无铅：无铅材料分析 |
| MAX1709EUI-T | 生产中 | TSSOP-EP；28引脚；63.7mm²封装信息 | -40°C至+85°C | RoHS/无铅：否材料分析 |
| MAX1709EUI/GG8 | 生产中 | TSSOP-EP；28引脚；63.7mm²封装信息 | -40°C至+85°C | RoHS/无铅：否材料分析 |
| MAX1709EUI/GG8-T | 生产中 | TSSOP；封装信息 | -40°C至+85°C | 参考数据资料 |
功能接近器件
| 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 |
| MAX1706 | 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 |
| MAX1763 | 1.5A、低噪声、1MHz、升压型DC-DC转换器 |
| MAX1708 | 高频、大功率、低噪声、升压型DC-DC转换器 |
评估板与开发套件
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