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TC7662B

更新时间： 2024-11-22 22:49:55
品牌 Logo 应用领域
TELCOM 转换器泵
页数 文件大小 规格书
9页 132K
描述
CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER

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中文翻译

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TC7662B 数据手册

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4
EVALUATION  
KIT  
AVAILABLE  
TC7662B  
CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER  
FEATURES  
GENERAL DESCRIPTION  
■ Wide Operating Voltage Range: 1.5V to 15V  
■ Boost Pin (Pin 1) for Higher Switching Frequency  
■ High Power Efficiency is 96%  
■ Easy to Use – Requires Only 2 External Non-Critical  
Passive Components  
The TC7662B is a pin-compatible upgrade to the Indus-  
try standard TC7660 charge pump voltage converter. It  
converts a +1.5V to +15V input to a corresponding – 1.5 to  
– 15V output using only two low-cost capacitors, eliminating  
inductors and their associated cost, size and EMI.  
The on-board oscillator operates at a nominal fre-  
quency of 10kHz. Frequency is increased to 35kHz when  
pin1isconnectedtoV+, allowingtheuseofsmallerexternal  
capacitors.Operationbelow10kHz(forlowersupplycurrent  
applications) is also possible by connecting an external  
capacitor from OSC to ground (with pin 1 open).  
■ Improved Direct Replacement for Industry Stan-  
dard ICL7660 and Other Second Source Devices  
APPLICATIONS  
■ Simple Conversion of +5V to ±5V Supplies  
■ Voltage Multiplication VOUT = ±nVIN  
■ Negative Supplies for Data Acquisition Systems  
and Instrumentation  
■ RS232 Power Supplies  
■ Supply Splitter, VOUT = ±VS/2  
The TC7662B is available in both 8-pin DIP and 8-pin  
small outline (SO) packages in commercial and extended  
temperature ranges.  
ORDERING INFORMATION  
Temperature  
Part No.  
Package  
Range  
PIN CONFIGURATION (DIP and SOIC)  
TC7662BCOA  
TC7662BCPA  
TC7662BEOA  
TC7662BEPA  
TC7660EV  
8-Pin SOIC  
0°C to +70°C  
0°C to +70°C  
+
+
V
8-Pin Plastic DIP  
8-Pin SOIC  
BOOST  
1
2
3
4
8
7
6
5
BOOST  
1
2
3
4
8
7
6
5
V
+
+
CAP  
GND  
CAP  
GND  
OSC  
OSC  
– 40°C to +85°C  
– 40°C to +85°C  
LOW  
VOLTAGE (LV)  
LOW  
VOLTAGE (LV)  
TC7662BCPA  
TC7662BEPA  
TC7662BCOA  
TC7662BEOA  
8-Pin Plastic DIP  
–
–
V
V
CAP  
CAP  
OUT  
OUT  
Evaluation Kit for  
Charge Pump Family  
FUNCTIONAL BLOCK DIAGRAM  
+
+
V
CAP  
2
8
1
BOOST  
VOLTAGE–  
7
6
RC  
OSCILLATOR  
4
÷ 2  
–
LEVEL  
OSC  
LV  
CAP  
TRANSLATOR  
5
V
OUT  
INTERNAL  
VOLTAGE  
REGULATOR  
LOGIC  
NETWORK  
TC7662B  
3
GND  
TC7662B-8 9/11/96  
TELCOM SEMICONDUCTOR, INC.  
4-83  
1234567...9

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