高度集成的笔记本电源控制器具有最高的系统性能和最小尺寸
The MAX1630–MAX1635 are buck-topology, step-down, switch-mode, power-supply controllers that generate logic-supply voltages in battery-powered systems. These high-performance, dual/triple-output devices include on-board power-up sequencing, power-good signaling with delay, digital soft-start, secondary winding control, low-dropout circuitry, internal frequency-compensation networks, and automatic bootstrapping. Up to 96% 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, which extends battery life in system-suspend or standby mode. 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. These devices feature a logic-controlled and synchronizable, fixed-frequency, pulse-width-modulation (PWM) operating mode. This reduces noise and RF interference in sensitive mobile communications and pen-entry applications. Asserting the active-low SKIP pin enables fixed-frequency mode, for lowest noise under all load conditions. The MAX1630–MAX1635 include two PWM regulators, adjustable from 2.5V to 5.5V with fixed 5.0V and 3.3V modes. All these devices include secondary feedback regulation, and the MAX1630/MAX1632/MAX1633/ MAX1635 each contain 12V/120mA linear regulators. The MAX1631/MAX1634 include a secondary feedback input (SECFB), plus a control pin (STEER) that selects which PWM (3.3V or 5V) receives the secondary feedback signal. SECFB provides a method for adjusting the secondary winding voltage regulation point with an external resistor divider, and is intended to aid in creating auxiliary voltages other than fixed 12V. The MAX1630/MAX1631/MAX1632 contain internal output overvoltage and undervoltage protection features.
关键特性
| 应用
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| 语言 | 下载文件 | 备注 |
|---|---|---|
| 英文 | MAX1630-MAX1635.pdf | Rev 4; 09/2005 |
| Part Number | VIN (V) | VIN (V) | VOUT1 (V) | VOUT1 (V) | Preset VOUT (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 | ||||||||
| MAX1631 | 4.2 | 30 | 2.5 | 5 |
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| 4 | External | Yes | 2 |
| SSOP/28 | $7.02 @1k |
| 型号 | 状况 | 推荐替代产品 | 封装 | 温度 | RoHS/无铅 |
|---|---|---|---|---|---|
| MAX1631CAI | 停止供货 | MAX1631AEAI+ | SSOP,；28引脚；81.6mm² | 0°C至+70°C | 参考数据资料 |
| MAX1631CAI+ | 生产中 | SSOP,；28引脚；81.6mm² | 0°C至+70°C | RoHS/无铅：无铅 | |
| MAX1631CAI+T | 停止供货 | SSOP； | -40°C至+85°C | 参考数据资料 | |
| MAX1631CAI-T | 停止供货 | MAX1631AEAI+ | SSOP；28引脚 | 0°C至+70°C | 参考数据资料 |
| MAX1631EAI | 停止供货 | MAX1631AEAI+ | SSOP,；28引脚；81.6mm² | -40°C至+85°C | 参考数据资料 |
| MAX1631EAI+ | NRND | MAX1631AEAI+ | SSOP,；28引脚；81.6mm² | -40°C至+85°C | RoHS/无铅：无铅 |
| MAX1631EAI+T | NRND | MAX1631AEAI+ | SSOP,；28引脚；81.6mm² | -40°C至+85°C | RoHS/无铅：无铅 |
| MAX1631EAI-T | 停止供货 | MAX1631AEAI+ | SSOP；28引脚 | -40°C至+85°C | 参考数据资料 |
