数据手册：MAX1636 .pdf [英文Rev.3(PDF,252kB)]
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The MAX1636 is a synchronous, buck, switch-mode, power-supply controller that generates the CPU supply voltage in battery-powered systems. It achieves ±1% output voltage accuracy and offers the excellent load-transient response needed by upcoming generations of dynamic-clock CPUs.
Up to 95% efficiency is achieved through synchronous rectification and Maxim's proprietary Idle Mode™ control scheme. Efficiency is greater than 80% over a 1000:1 load-current range, extending battery life in system-suspend or standby modes. Excellent dynamic response corrects output load transients caused by the latest dynamic-clock CPUs within five 300kHz clock cycles. Strong, 1A, on-board gate drivers ensure fast, external N-channel MOSFET switching.
The MAX1636 features a logic-controlled and synchronizable, fixed-frequency, pulse-width-modulation (PWM) operating mode that reduces noise and RF interference in sensitive mobile communications and pen-entry applications. Holding SKIP high forces fixed-frequency mode for lowest noise under all load conditions.
For a low-cost version that omits the +5V VL linear-regulator block and comes in a smaller 16-pin QSOP package, refer to the MAX1637 data sheet.
产品关键特性
- ±1% DC Accuracy (Adjustable Mode)
- Output Overvoltage Crowbar Protection
- Output Undervoltage Shutdown
- Adjustable Switching Frequency to 340kHz
- Low-Dropout Operation
- Idle Mode Pulse-Skipping Operation
- 1.10V to 5.5V Adjustable Output Voltage
- 2.5V/3.3V Dual-Mode Fixed-Output Settings
- Internal Digital Soft-Start
- 1.1V ±1% Reference Output
- 3µA (typ) Shutdown Current
- Open-Drain Power-Good Output (active-low RESET)
- 20-Pin SSOP Package
| 应用与使用范围
- 总线端接电源
- 计算机：台式机、工作站和服务器
- 笔记本电脑
- 亚笔记本电脑
|
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 |
| MAX1636EAP | 停止供货 | SSOP；20引脚；57.9mm²封装信息 | -40°C至+85°C | 参考数据资料 |
| MAX1636EAP+ | 停止供货 | SSOP；20引脚；57.9mm²封装信息 | -40°C至+85°C | RoHS/无铅：无铅材料分析 |
| MAX1636EAP+T | 停止供货 | SSOP；20引脚；57.9mm²封装信息 | -40°C至+85°C | RoHS/无铅：无铅材料分析 |
| MAX1636EAP-T | 停止供货 | SSOP；20引脚封装信息 | -40°C至+85°C | 参考数据资料 |
功能接近器件
评估板与开发套件
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