MAX764:-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
  • High Efficiency for a Wide Range of Load Currents
  • 250mA Output Current
  • 120µA Max Supply Current
  • 5µA Max Shutdown Current
  • 3V to 16V Input Voltage Range
  • -5V (MAX764), -12V (MAX765), -15V (MAX766), or Adjustable Output from -1V to -16V
  • Current-Limited PFM Control Scheme
  • 300kHz Switching Frequency
  • Internal, P-Channel Power MOSFET
功能框图
MAX764、MAX765、MAX766:典型工作电路
产品应用
  • 电池供电应用
  • LAN适配器
  • LCD偏置发生器
  • 便携式仪表
  • 远端数据采集系统
关键参数
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
IOUT1
(A)
Output Adjust. MethodDC-DC OutputsOper. Freq.
(kHz)
Switch TypePackage/PinsBudgetary
Price
minmaxminmaxmaxSee Notes
MAX764316.5-1-16-5.00.26Resistor1300Internal
CDIP(N)/8
PDIP(N)/8
SOIC(N)/8
$2.57 @1k
MAX765-120.12
CDIP(N)/8
PDIP(N)/8
SOIC(N)/8
MAX766-150.1
CDIP(N)/8
PDIP(N)/8
SOIC(N)/8
数据手册DataSheet
英文MAX764-MAX766.pdfRev 0; 06/1994
开发工具
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
MAX764C/D停止供货DICE SALES,;NA引脚;DICE;参考数据资料
MAX764CPA生产中PDIP(N),;8引脚;81.9mm²0°C至+70°CRoHS/无铅:否
MAX764CPA+生产中PDIP(N),;8引脚;81.9mm²0°C至+70°CRoHS/无铅:无铅
MAX764CSA最后一次购买MAX764CSA+SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:否
MAX764CSA+生产中SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:无铅
MAX764CSA+T生产中SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:无铅
MAX764CSA-T停止供货MAX764CSA+TN.SO;8引脚0°C至+70°C参考数据资料
MAX764EPA停止供货MAX764EPA+PDIP(N),;8引脚;81.9mm²-40°C至+85°CRoHS/无铅:否
MAX764EPA+生产中PDIP(N),;8引脚;81.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX764ESA最后一次购买MAX764ESA+SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/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?
MAX764ESA+生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX764ESA+T生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX764ESA-T最后一次购买MAX764ESA+TSOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX764MJA生产中CDIP(N),;8引脚;82.6mm²-55°C至+125°CRoHS/无铅:否
MAX764-MAX766.pdf MAX766
MAX764.pdf MAX764
MAX764-MAX766.pdf MAX766