MAX765：-5V/-12V/-15V或可调、高效率、低IQ、DC-DC反相器
内置功率MOSFET，减少元件数并节省空间
The MAX764/MAX765/MAX766 inverting switching regulators are highly efficient over a wide range of load currents, delivering up to 1.5W. A unique, current-limited, pulse-frequency-modulated (PFM) control scheme combines the benefits of traditional PFM converters with the benefits of pulse-width-modulated (PWM) converters. Like PWM converters, the MAX764/MAX765/MAX766 are highly efficient at heavy loads. Yet because they are PFM devices, they use less than 120µA of supply current (vs. 2mA to 10mA for a PWM device). The input voltage range is 3V to 16V. The output voltage is preset at -5V (MAX764), -12V (MAX765), or -15V (MAX766); it can also be adjusted from -1V to -16V using two external resistors (Dual Mode™). The maximum operating VIN - VOUT differential is 20V. These devices use miniature external components; their high switching frequencies (up to 300kHz) allow for less than 5mm diameter surface-mount magnetics. A standard 47µH inductor is ideal for most applications, so no magnetics design is necessary. An internal power MOSFET makes the MAX764/MAX765/ MAX766 ideal for minimum component count, low- and medium-power applications. For increased output drive capability or higher output voltages, use the MAX774/MAX775/MAX776 or MAX1774, which drive an external power P-channel MOSFET for loads up to 5W.
关键特性
| 功能框图 产品应用
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关键参数
| Part Number | VIN (V) | VIN (V) | VOUT1 (V) | VOUT1 (V) | Preset VOUT (V) | IOUT1 (A) | Output Adjust. Method | DC-DC Outputs | Oper. Freq. (kHz) | Switch Type | Package/Pins | Budgetary Price | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | min | max | max | See Notes | ||||||||||
| MAX764 | 3 | 16.5 | -1 | -16 | -5.0 | 0.26 | Resistor | 1 | 300 | Internal |
| $2.57 @1k | |||
| MAX765 | -12 | 0.12 |
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| MAX766 | -15 | 0.1 |
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数据手册DataSheet
| 英文 | MAX764-MAX766.pdf | Rev 0; 06/1994 |
开发工具
技术资料
- Petaluma (MAXREFDES30#) ZedBoard Quick Start Guide
- Petaluma (MAXREFDES30#): 8-Channel Simultaneous-Sampling Analog Front End
订购型号
| 型号 | 状况 | 推荐替代产品 | 封装 | 温度 | RoHS/无铅 |
|---|---|---|---|---|---|
| MAX765C/D | 停止供货 | DICE SALES,；NA引脚；DICE； | 参考数据资料 | ||
| MAX765CPA | 最后一次购买 | MAX765CPA+ | PDIP(N),；8引脚；81.9mm² | 0°C至+70°C | RoHS/无铅：否 |
| MAX765CPA+ | 生产中 | PDIP(N),；8引脚；81.9mm² | 0°C至+70°C | RoHS/无铅：无铅 | |
| MAX765CSA | 生产中 | SOIC(N),；8引脚；30.9mm² | 0°C至+70°C | RoHS/无铅：否 | |
| MAX765CSA+ | 生产中 | SOIC(N),；8引脚；30.9mm² | 0°C至+70°C | RoHS/无铅：无铅 | |
| MAX765CSA+T | 生产中 | SOIC(N),；8引脚；30.9mm² | 0°C至+70°C | RoHS/无铅：无铅 | |
| MAX765CSA-T | 停止供货 | MAX765CSA+T | N.SO；8引脚 | 0°C至+70°C | 参考数据资料 |
| MAX765EPA | 停止供货 | MAX765EPA+ | PDIP(N),；8引脚；81.9mm² | -40°C至+85°C | RoHS/无铅：否 |
| MAX765EPA+ | 生产中 | PDIP(N),；8引脚；81.9mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX765ESA | 最后一次购买 | MAX765ESA+ | SOIC(N),；8引脚；30.9mm² | -40°C至+85°C | RoHS/无铅：否 |
| 型号 | 状况 | 推荐替代产品 | 封装：类型 引脚 占位面积封装图 编码/变更 * | 温度 | RoHS/无铅？ |
| MAX765ESA+ | 生产中 | SOIC(N),；8引脚；30.9mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX765ESA+T | 生产中 | SOIC(N),；8引脚；30.9mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX765ESA-T | 最后一次购买 | MAX765ESA+T | SOIC(N),；8引脚；30.9mm² | -40°C至+85°C | RoHS/无铅：否 |
| MAX765MJA | 生产中 | CDIP(N),；8引脚；82.6mm² | -55°C至+125°C | RoHS/无铅：否 |
- MAX764-MAX766.pdf MAX766
