MAX1703：1节至3节电池、大功率(1.5A)、低噪声、升压型DC-DC转换器
紧凑的高效、低噪声升压转换器，带有增益电路
The MAX1703 is a high-efficiency, low-noise, step-up DC-DC converter intended for use in battery-powered wireless applications. It uses a synchronous-rectified pulse-width-modulation (PWM) boost topology to generate a 2.5V to 5.5V output from battery inputs, such as one to three NiCd/NiMH cells or one Li-Ion cell. The device includes a 2A, 75mΩ, N-channel MOSFET switch and a 140mΩ, P-channel synchronous rectifier. With its internal synchronous rectifier, the MAX1703 delivers up to 5% better efficiency than similar nonsynchronous converters. It also features a pulse-frequency-modulation (PFM) low-power mode to improve efficiency at light loads, and a 1µA shutdown mode. The MAX1703 comes in a 16-pin narrow SO package and includes an uncommitted comparator that generates a power-good or low-battery-warning output. It also contains a linear gain block that can be used to build a linear regulator. For lower-power outputs and a smaller package, refer to the MAX1700/MAX1701. For dual outputs (step-up plus linear regulator), refer to the MAX1705/MAX1706. For an on-board analog-to-digital converter, refer to the MAX848/MAX849. The MAX1703 evaluation kit is available to speed designs.
关键特性
| MAX1703：典型工作电路 应用
|
数据手册DataSheet
| 语言 | 下载文件 | 备注 |
|---|---|---|
| 英文 | MAX1703.pdf | Rev 2; 11/1998 |
关键参数
| Part Number | VIN (V) | VIN (V) | VOUT1 (V) | VOUT1 (V) | Preset VOUT (V) | IOUT1 (A) | Output Adjust. Method | Switch Type | Synchronous Switching | ICC (mA) | Shutdown Mode Supply Current (µA) | Shutdown Mode Supply Current (µA) | DC-DC Outputs | Oper. Freq. (kHz) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | min | max | max | typ | typ | max | See Notes | ||||||||
| MAX1703 | 0.7 | 5.5 | 2.5 | 5.5 | 5 | 1.5 | Resistor | Internal | Yes | 0.065 | 0.1 | 20 | 1 | 400 | SOIC(N)/16 | $4.59 @1k |
| Part Number | VIN (V) | VIN (V) | VOUT1 (V) | VOUT1 (V) | Preset VOUT (V) | IOUT1 (A) | Output Adjust. Method | Switch Type | Synchronous Switching | DC-DC Outputs | Alternate Topology | Oper. Freq. (kHz) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | min | max | max | See Notes | |||||||||
| MAX1703 | 0.7 | 5.5 | 2.5 | 5.5 | 5 | 1.5 | Resistor | Internal | Yes | 1 |
| 400 | SOIC(N)/16 | $4.59 @1k |
开发工具
技术资料
- Uninterruptible Power Supply for USB Devices
- High-Power Boost Converter Switches Modes Automatically and Maintains Light-Load Efficiency
- DC-to-DC Converter Combats EMI
- Energy Management for Small Portable Systems
- Simple Circuit Disconnects Load
质量和环境数据
相关产品
订购型号
| 型号 | 状况 | 推荐替代产品 | 封装 | 温度 | RoHS/无铅 |
|---|---|---|---|---|---|
| MAX1703ESE | 停止供货 | MAX1703ESE+ | SOIC(N),；16引脚；62mm² | -40°C至+85°C | RoHS/无铅：否 |
| MAX1703ESE+ | 生产中 | SOIC(N),；16引脚；62mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX1703ESE+T | 生产中 | SOIC(N),；16引脚；62mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX1703ESE-T | 停止供货 | MAX1703ESE+T | SOIC(N),；16引脚；62mm² | -40°C至+85°C | RoHS/无铅：否 |
- MAX1703.pdf MAX1703
- MAX1703.pdf MAX1703
- MAX1703.pdf MAX1703
- Uninterruptible Power Supply for USB Devices MAX1703
- High-Power Boost Converter Switches Modes Automatically and Maintains Light-Load Efficiency MAX1703
- DC-to-DC Converter Combats EMI MAX1703
- Energy Management for Small Portable Systems MAX604
- Simple Circuit Disconnects Load MAX1703
- MAX1703.pdf MAX1703
- 典型工作电路 MAX1703
