MAX850：低噪声、稳压型、负输出电荷泵，用于GaAsFET偏置电源

1mVP-P输出电压纹波(MAX853)

The MAX850-MAX853 low-noise, inverting, charge-pump power supplies are ideal for biasing GaAsFETs in cellular telephone transmitter amplifiers. The MAX850-MAX852 offer both preset (-4.1V) and adjustable (-0.5V to -9.0V) output voltages. The MAX853 uses an external positive control voltage to set the negative output voltage. Input voltage range for all four devices is 4.5V to 10V. Output current is 5mA. An internal linear regulator reduces the output voltage ripple to 2mVP-P. With a well-filtered control voltage (VCTRL), the MAX853 achieves typical output ripple of less than 1mVP-P. Supply current is 3mA max, and shutdown current is less than 1µA max over temperature (5µA max for MAX851).

关键特性

Fixed -4.1V or Adjustable -0.5V to -9V Output at 5mA
4.5V to 10V Input Voltage Range
2mVP-P Output Voltage Ripple (MAX850-MAX852)
1mVP-P Output Voltage Ripple (MAX853)
100kHz Charge-Pump Switching Frequency (MAX850/MAX851/MAX853)
External Synchronizing Clock Input (MAX852)
Logic-Level Shutdown Mode: 1µA Max Over Temperature (MAX850/MAX852/MAX853)
Low Cost, 8-Pin SO Package

MAX850、MAX851、MAX852、MAX853：典型工作电路

应用

蜂窝电话
连续可调的GaAsFET偏置
LCD偏置对比度控制
负电源调节电源
个人通信装置、PDA
无线数据记录仪

数据手册DataSheet

语言	下载文件	备注
英文	MAX850-MAX853.pdf	Rev 2; 04/1996

关键参数

Part Number	Topology	V_IN (V)	V_IN (V)	I_CC (mA)	Unadj. V_OUT (V)	Adj. V_OUT (V)	Adj. V_OUT (V)	I_OUT (A)	Oper. Freq. (kHz)	Oper. Temp. (°C)	Package/Pins	Budgetary Price
Part Number	Topology	min	max	max	Unadj. V_OUT (V)	min	max	typ	Oper. Freq. (kHz)	Oper. Temp. (°C)	Package/Pins	See Notes
MAX850	Inverter Regulated	4.5	10	3	-4.1	-VIN-0.6	-0.5	0.005	100	-40 to +85 -20 to +85	SOIC(N)/8	$1.65 @1k
MAX851					-4.1						SOIC(N)/8
MAX853					-9						SOIC(N)/8

开发工具

MAX850EVKIT

技术资料

订购型号

型号	状况	推荐替代产品	封装	温度	RoHS/无铅
MAX850CSA	停止供货		SOIC(N),；8引脚；30.9mm²	0°C至+70°C	RoHS/无铅：否
MAX850CSA-T	停止供货		N.SO；	0°C至+70°C	参考数据资料
MAX850ESA	停止供货		SOIC(N),；8引脚；30.9mm²	-40°C至+85°C	RoHS/无铅：否
MAX850ESA+	生产中		SOIC(N),；8引脚；30.9mm²	-40°C至+85°C	RoHS/无铅：无铅
MAX850ESA+T	生产中		SOIC(N),；8引脚；30.9mm²	-40°C至+85°C	RoHS/无铅：无铅
MAX850ESA-T	停止供货	MAX850ESA+T	SOIC(N),；8引脚；30.9mm²	-40°C至+85°C	RoHS/无铅：否
MAX850ISA	停止供货	MAX850ISA+	SOIC(N),；8引脚；30.9mm²	-20°C至+85°C	RoHS/无铅：否
MAX850ISA+	生产中		SOIC(N),；8引脚；30.9mm²	-20°C至+85°C	RoHS/无铅：无铅
MAX850ISA+T	生产中		SOIC(N),；8引脚；30.9mm²	-20°C至+85°C	RoHS/无铅：无铅
MAX850ISA-T	停止供货	MAX850ISA+T	N.SO；8引脚	-20°C至+85°C	参考数据资料