MAX618:28V、PWM、升压型DC-DC转换器

高压、大电流升压转换器,QSOP封装,还可提供SEPIC、反激拓扑

The MAX618 CMOS, PWM, step-up DC-DC converter generates output voltages up to 28V and accepts inputs from +3V to +28V. An internal 2A, 0.3Ω switch eliminates the need for external power MOSFETs while supplying output currents up to 500mA or more. A PWM control scheme combined with Idle Mode™ operation at light loads minimizes noise and ripple while maximizing efficiency over a wide load range. No-load operating current is 500µA, which allows efficiency up to 93%. A fast 250kHz switching frequency allows the use of small surface-mount inductors and capacitors. A shutdown mode extends battery life when the device is not in use. Adaptive slope compensation allows the MAX618 to accommodate a wide range of input and output voltages with a simple, single compensation capacitor. The MAX618 is available in a thermally enhanced 16-pin QSOP package that is the same size as an industry-standard 8-pin SO but dissipates up to 1W. An evaluation kit (MAX618EVKIT) is available to help speed designs.

关键特性
  • Adjustable Output Voltage Up to +28V
  • Up to 93% Efficiency
  • Wide Input Voltage Range (+3V to +28V)
  • Up to 500mA Output Current at +12V
  • 500µA Quiescent Supply Current
  • 3µA Shutdown Current
  • 250kHz Switching Frequency
  • Small 1W, 16-Pin QSOP Package
MAX618:典型工作电路
MAX618:典型工作电路
应用
  • 工业+24V和+28V系统
  • LCD显示器
  • 掌上电脑
数据手册DataSheet
语言下载文件备注
英文MAX618.pdfRev 2; 04/2015
关键参数
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
IOUT1
(A)
Output Adjust. MethodSwitch TypeICC
(mA)
Shutdown Mode Supply Current
(µA)
Shutdown Mode Supply Current
(µA)
DC-DC OutputsOper. Freq.
(kHz)
Package/PinsBudgetary
Price
minmaxminmaxmaxtyptypmaxSee Notes
MAX618328328120.5ResistorInternal0.5381250QSOP/16$3.68 @1k
开发工具
技术资料
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
MAX618EEE停止供货MAX618EEE+QSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX618EEE+生产中QSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX618EEE+T生产中QSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX618EEE-T停止供货MAX618EEE+TQSOP;16引脚-40°C至+85°C参考数据资料
MAX618EEE/GG8生产中QSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX618EEE/GG8-T停止供货MAX618EEE+QSOP;-40°C至+85°C参考数据资料
MAX618.pdf MAX618
MAX618.pdf MAX618
MAX618.pdf MAX618
Introduction to Spirometers and Important Design Considerations for Selecting Electrical Components MAXQ622
MAX618.pdf MAX618
典型工作电路 MAX618