数据手册：MAX1624, MAX1625 业内尺寸最小、响应速度最快的Pentium® Pro/Pentium II电源 .pdf [英文Rev.1(PDF,232kB)]
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The MAX1624/MAX1625 are ultra-high-performance, step-down DC-DC controllers for CPU power in high-end computer systems. Designed for demanding applications in which output voltage precision and good transient response are critical for proper operation, they deliver over 35A from 1.1V to 3.5V with ±1% total accuracy from a +5V ±10% supply. Excellent dynamic response corrects output transients caused by the latest dynamically clocked CPUs. These controllers achieve over 90% efficiency by using synchronous rectification. Flying-capacitor bootstrap circuitry drives inexpensive, external N-channel MOSFETs.
The switching frequency is resistor programmable from 100kHz to 1MHz. High switching frequencies allow the use of a small surface-mount inductor and decrease output filter capacitor requirements, reducing board area and system cost.
The MAX1624 is available in a 24-pin SSOP and offers additional features such as a digitally programmable output in 100mV increments; adjustable transient response; selectable 0.5%, 1%, or 2% AC load regulation; and gate drive for a current-boost MOSFET. The MAX1625 is resistor adjustable and comes
in a 16-pin narrow SO package. Other features in both controllers include internal digital soft-start, a power-good output, and a 3.5V ±1% reference output. For a similar controller compatible with the latest Intel® VRM/VID specification, see the MAX1638 data sheet.
产品关键特性
- Better than ±1% Output Accuracy Over Line and Load
- 90% Efficiency
- Excellent Transient Response
- Resistor-Programmable Fixed Switching Frequency from 100kHz to 1MHz
- Over 35A Output Current
- Digitally Programmable Output from 1.1V to 3.5V in 100mV Increments (MAX1624)
- Resistor-Adjustable Output down to 1.1V (MAX1625)
- Remote Sensing
- Adjustable AC Loop Gain (MAX1624)
- GlitchCatcher™ Circuit for Fast Load-Transient Response (MAX1624)
- Power-Good (PWROK) Output
- Current-Mode Feedback
- Digital Soft-Start
- Strong 2A Gate Drivers
- Current-Limited Output
| 应用与使用范围
- 计算机：台式机、工作站和服务器
- GTL总线端接
- 工业计算机
- LAN服务器
- Pentium®
|
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 |
| MAX1624EAG | 停止供货 | SSOP；24引脚封装信息 | -40°C至+85°C | 参考数据资料 |
| MAX1624EAG+ | 停止供货 | SSOP；24引脚封装信息 | -40°C至+85°C | 参考数据资料 |
| MAX1624EAG+T | 停止供货 | SSOP；封装信息 | -40°C至+85°C | 参考数据资料 |
| MAX1624EAG-T | 停止供货 | SSOP；封装信息 | -40°C至+85°C | 参考数据资料 |
| MAX1625ESE | 停止供货 | SOIC(N)；16引脚；61.9mm²封装信息 | -40°C至+85°C | RoHS/无铅：否材料分析 |
| MAX1625ESE+ | 停止供货 | SOIC(N)；16引脚；61.9mm²封装信息 | -40°C至+85°C | RoHS/无铅：无铅材料分析 |
| MAX1625ESE+T | 停止供货 | SOIC(N)；16引脚；61.9mm²封装信息 | -40°C至+85°C | RoHS/无铅：无铅材料分析 |
| MAX1625ESE-T | 停止供货 | N.SO；16引脚封装信息 | -40°C至+85°C | 参考数据资料 |
功能接近器件
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