MAX1701:1节至3节电池、大功率(1A)、低噪声、升压型DC-DC转换器

紧凑的高效、低噪声升压转换器,带有增益电路

The MAX1700/MAX1701 are high-efficiency, low-noise, step-up DC-DC converters intended for use in battery-powered wireless applications. They use a synchronous-rectified pulse-width-modulation (PWM) boost topology to generate 2.5V to 5.5V outputs from battery inputs such as one to three NiCd/NiMH cells or one Li-Ion cell. Both devices have an internal 1A, 130mΩ N-channel MOSFET switch and a 250mΩ P-channel synchronous rectifier. With their internal synchronous rectifier, the MAX1700/ MAX1701 deliver 5% better efficiency than similar nonsynchronous converters. They also feature a pulse-frequency-modulation (PFM) standby mode to improve efficiency at light loads, and a 3µA shutdown mode. The MAX1700/MAX1701 come in 16-pin QSOP packages (which occupy the same space as an 8-pin SO). The MAX1701 includes two comparators to generate power-good and low-battery warning outputs. It also contains a gain block that can be used to build a linear regulator using an external P-channel pass device. For higher-power outputs, refer to the MAX1703. For dual outputs (step-up and linear regulator), refer to the MAX1705/MAX1706. For an on-board analog-to-digital converter, refer to the MAX848/MAX849. The MAX1701 evaluation kit is available to speed design time.

关键特性
  • Up to 96% Efficiency
  • 1.1 VIN Guaranteed Start-Up
  • 0.7V to 5.5V Input Range
  • Up to 800mA Output
  • Step-Up Output (adjustable from 2.5V to 5.5V)
  • PWM/PFM Synchronous-Rectified Topology
  • External Clock or Internal 300kHz Oscillator
  • 3µA Logic-Controlled Shutdown
  • Power-Good Output (MAX1701)
  • Low-Battery Comparator (MAX1701)
  • Uncommitted Gain Block (MAX1701)
MAX1700、MAX1701:典型工作电路
MAX1700、MAX1701:典型工作电路
应用
  • 数字无绳电话
  • 手持式仪表(PDA、掌上电脑)
  • 掌上电脑
  • PCS电话
  • 个人通信装置
  • 双向寻呼
  • 无线手机
数据手册DataSheet
语言下载文件备注
英文MAX1700-MAX1701.pdfRev 1; 01/1999
关键参数
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
IOUT1
(A)
Output Adjust. MethodSwitch TypePower Good SignalSynchronous SwitchingICC
(mA)
Shutdown Mode Supply Current
(µA)
Shutdown Mode Supply Current
(µA)
DC-DC OutputsOper. Freq.
(kHz)
Package/PinsBudgetary
Price
minmaxminmaxmaxtyptypmaxSee Notes
MAX17000.75.52.25.50.8ResistorInternal-Yes0.0350.1201400QSOP/16$2.75 @1k
MAX1701Yes0.0553QSOP/16$2.96 @1k

Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
IOUT1
(A)
Output Adjust. MethodSwitch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsAlternate TopologyOper. Freq.
(kHz)
Package/PinsBudgetary
Price
minmaxminmaxmaxSee Notes
MAX17010.75.52.25.50.8ResistorInternalYesYes1
  • Step-Up
  • Step-Up/Down
400QSOP/16$2.96 @1k
开发工具
技术资料
相关产品
  • MAX1703:1节至3节电池、大功率(1.5A)、低噪声、升压型DC-DC转换器
  • MAX1705:1至3节电池、大电流、低噪声、升压型DC-DC转换器,带有线性稳压器
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX1701EEE停止供货MAX1701EEE+QSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX1701EEE+生产中QSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX1701EEE+T生产中QSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX1701EEE-T停止供货MAX1701EEE+TQSOP;16引脚-40°C至+85°C参考数据资料
MAX1700-MAX1701.pdf MAX1701
3.3V Lithium-Ion-Cell Buck/Boost Supply Requires One Inductor MAX1701
典型工作电路 MAX1701