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TJ7660N

更新时间： 2024-11-15 03:27:35
品牌 Logo 应用领域
韩国泰进 - HTC 转换器泵
页数 文件大小 规格书
11页 789K
描述
Charge Pump Voltage Converters

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TJ7660N 数据手册

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Charge Pump Voltage Converters  
TJ7660  
FEATURES  
• Simple Conversion of +5V Logic Supply to ±5V Supplies  
• Simple Voltage Multiplication (VOUT = (-) nVIN)  
• Typical Open Circuit Voltage Conversion Efficiency 99.9%  
• Typical Power Efficiency 98%  
• Wide Operating Voltage Range- TJ7660 1.5V to 10.0V  
• Easy to Use - Requires Only 2 External Non-Critical  
Passive Components  
SOP-8 PKG  
DIP-8 PKG  
• No External Diode Over Full Temp. and Voltage Range  
APPLICATION  
• On Board Negative Supply for Dynamic RAMs  
• Localized µProcessor (8080 Type) Negative Supplies  
• Inexpensive Negative Supplies  
< Pin Configuration  
• Data Acquisition Systems  
ORDERING INFORMATION  
Device  
Package  
TJ7660D  
TJ7660N  
SOP-8  
D I P-8  
DESCRIPTION  
The HTC TJ7660 is a monolithic CMOS power supply circuit which offers unique performance  
advantages over previously available devices.  
The TJ7660 performs supply voltage conversions from positive to negative for an input range  
of +1.5V to +10.0V resulting in complementary output voltages of -1.5V to -10.0V. Only 2  
noncritical external capacitors are needed for the charge pump and charge reservoir functions.  
The TJ7660 can also be connected to function as voltage doublers and will generate output  
voltages up to +18.6V with a +10V input. Contained on the chip are a series DC supply  
regulator, RC oscillator, voltage level translator, and four output power MOS switches.  
A unique logic element senses the most negative voltage in the device and ensures that the  
output N-Channel switch source-substrate junctions are not forward biased. This assures  
latchup free operation.  
The oscillator, when unloaded, oscillates at a nominal frequency of 10kHz for an input supply  
voltage of 5.0V.  
This frequency can be lowered by the addition of an external capacitor to the “OSC” terminal,  
or the oscillator may be overdriven by an external clock.  
The “LV” terminal may be tied to GROUND to bypass the internal series regulator and improve  
Jan. 2007-Rev 1.0  
HTC  
1
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