MAX1692：低噪声、5.5V输入、PWM降压型稳压器
微小的开关控制器，提供600mA驱动，性能指标比LDO提高10倍
The MAX1692 is a low-noise, pulse-width-modulated (PWM), DC-DC step-down converter. It powers logic and transmitters in small wireless systems such as cellular phones, communicating PDAs, and handy-terminals. The device features an internal synchronous rectifier for high efficiency; it requires no external Schottky diode. Excellent noise characteristics and fixed-frequency operation provide easy post-filtering. The MAX1692 is ideally suited for Li-Ion battery applications. It is also useful for +3V or +5V fixed input applications. The device operates in one of four modes. Forced PWM mode operates at a fixed frequency regardless of the load. Synchronizable PWM mode allows an external switching frequency to control and minimize harmonics. Idle Mode™ (PWM/PFM) extends battery life by switching to a PFM pulse-skipping mode during light loads. Shutdown mode places the device in standby, reducing quiescent supply current to under 0.1µA. The MAX1692 can deliver over 600mA. The output voltage can be adjusted from 1.25V to VIN with the input range of +2.7V to +5.5V. Other features of the MAX1692 include high efficiency, low dropout voltage, and a 1.2%-accurate 1.25V reference. It is available in a space-saving 10-pin µMAX package with a height of only 1.11mm.
关键特性
| MAX1692：典型工作电路 应用
|
数据手册DataSheet
| 语言 | 下载文件 | 备注 |
|---|---|---|
| 英文 | MAX1692.pdf | Rev 0; 11/1998 |
关键参数
| Part Number | VIN (V) | VIN (V) | VOUT1 (V) | VOUT1 (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 | |||||||
| MAX1692 | 2.7 | 5.5 | 1.25 | 5.5 |
| 0.6 | Internal | Yes | 1 | 750 | µMAX/10 | $2.71 @1k |
开发工具
技术资料
- Protection From Blackouts: Dirt Cheap to Fully Integrated
- Design Case Study: Designing a Power Supply for a Portable, Wireless Contact Manager
- Managing Noise in Cell-Phone Handsets
- All-Ceramic 320mA Step-Down Converter for USB
- Current-Limit Circuit for the Buck Regulator
- Integrated Power Supplies are Highly Reliable and Compact Postregulators
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 |
|---|---|---|---|---|---|
| MAX1692EUB | 停止供货 | MAX1692EUB+ | µMAX,；10引脚；15.4mm² | -40°C至+85°C | RoHS/无铅：否 |
| MAX1692EUB+ | 生产中 | µMAX,；10引脚；15.4mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX1692EUB+T | 生产中 | µMAX,；10引脚；15.4mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX1692EUB-T | 停止供货 | MAX1692EUB+T | µMAX,；10引脚；15.4mm² | -40°C至+85°C | RoHS/无铅：否 |
- MAX1692.pdf MAX1692
- MAX1692.pdf MAX1692
- MAX1692.pdf MAX1692
- Protection From Blackouts: Dirt Cheap to Fully Integrated MAX8211
- Design Case Study: Designing a Power Supply for a Portable, Wireless Contact Manager MAX1749
- Managing Noise in Cell-Phone Handsets MAX8878
- All-Ceramic 320mA Step-Down Converter for USB MAX1692
- Current-Limit Circuit for the Buck Regulator MAX1692
- Integrated Power Supplies are Highly Reliable and Compact Postregulators MAX1760
- MAX1692.pdf MAX1692
- 典型工作电路 MAX1692
