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参数资料
型号： MAX1681ESA
厂商： Maxim Integrated Products
文件页数： 1/12页
文件大小： 0K
描述： IC REG MULTI CONFIG ADJ 8SOIC
产品培训模块： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装： 100
类型： 切换式电容器（充电泵），倍增器，反相
输出类型： 可调式
输出数： 1
输出电压： -2 V ~ -5.5 V，4 V ~ 11 V
输入电压： 2 V ~ 5.5 V
频率 - 开关： 500kHz，1MHz
电流 - 输出： 125mA
同步整流器： 无
工作温度： -40°C ~ 85°C
安装类型： 表面贴装
封装/外壳： 8-SOIC（0.154"，3.90mm 宽）
包装： 管件
供应商设备封装： 8-SOIC
19-1247; Rev 0; 7/97
125mA, Frequency-Selectable,
Switched-Capacitor Voltage Converters
_______________General Description
The MAX1680/MAX1681 inductorless switched-capaci-
tor voltage converters either invert an input voltage of
+2.0V to +5.5V or double it while supplying up to
125mA output current. They have a selectable-frequen-
cy option that allows the use of small capacitors: 4.7μF
(MAX1680), 1μF (MAX1681). With their high output cur-
rent capability, these charge-pump devices are suit-
able replacements for inductor-based regulators, which
require more expensive external components and addi-
tional board space.
The devices ’ equivalent output resistance (typically
3.5 ? ) allows them to deliver as much as 125mA with
only a 440mV drop. A shutdown feature reduces quies-
cent current to less than 1μA. The MAX1680/MAX1681
are available in 8-pin SO packages. For devices that
deliver up to 50mA in smaller μMAX packages, refer to
the MAX860/MAX861 data sheet.
________________________Applications
____________________________Features
o Selectable Switching Frequencies:
125kHz/250kHz (MAX1680)
500kHz/1MHz (MAX1681)
o Allow Use of Small Capacitors
(1μF for the MAX1681)
o 125mA Output Current
o 3.5 ? Output Impedance
o 1μA Logic-Controlled Shutdown
o Configurable as Voltage Inverters or Doublers
o +2.0V to +5.5V Input Voltage Range
o Available in 8-Pin SO Packages
o 90% Efficiency
______________Ordering Information
Local Negative Supplies
Interface Power Supplies
Op-Amp Power Supplies
MOSFET Bias
PART
MAX1680 C/D
MAX1680ESA
MAX1681 C/D
MAX1681ESA
TEMP. RANGE
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
Dice*
8 SO
Dice*
8 SO
*Contact factory for dice specifications.
Pin Configuration appears at end of data sheet.
__________________________________________________Typical Operating Circuits
FSEL
IN
+V INPUT
+3V TO +5.5V
1 μ F
FSEL
IN
C2
1 μ F
DOUBLED
OUTPUT
VOLTAGE
CAP+
SHDN
CAP+
SHDN
C1
1 μ F
MAX1681
GND
LV
INVERTED
+V INPUT
+4V TO +5.5V
C1
1 μ F
MAX1681
GND
LV
CAP-
OUT
C2
1 μ F
OUTPUT
VOLTAGE
1 μ F
CAP-
OUT
INVERTER CONFIGURATION
NOTE: USE 4.7 μ F CAPACITORS FOR MAX1680
INPUT VOLTAGE RANGE: +2.0V TO +5.5V.
DOUBLER CONFIGURATION
NOTE: USE 4.7 μ F CAPACITORS FOR MAX1680
INPUT VOLTAGE RANGE: +2.5V TO +5.5V.
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
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MAX1681ESA+ 功能描述:直流/直流开关转换器 125mA f-Select Swtcd Voltage Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX1681ESA+ 制造商:Maxim Integrated Products 功能描述:SEMICONDUCTOR ((NW))
MAX1681ESA+T 功能描述:直流/直流开关转换器 125mA f-Select Swtcd Voltage Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX1681ESA-T 功能描述:直流/直流开关转换器 125mA f-Select Swtcd Voltage Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX16820ATT+ 制造商:Maxim Integrated Products 功能描述:LED DRVR 5V/9V/12V/15V/18V/24V 6TDFN EP - Rail/Tube
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