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參數(shù)資料
| 型號： | TC682EPA |
| 廠商： | TelCom Semiconductor, Inc. |
| 英文描述： | INVERTING VOLTAGE DOUBLER |
| 中文描述： | 反向電壓倍增 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 80K |
| 代理商： | TC682EPA |
4-21
TELCOM SEMICONDUCTOR, INC.
7
6
5
4
3
1
2
8
INVERTING VOLTAGE DOUBLER
FEATURES
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99.9% Voltage Conversion Efficiency
92% Power Conversion Efficiency
Wide Input Voltage Range ...............+2.4V to +5.5V
Only 3 External Capacitors Required
185
μ
A Supply Current
Space-Saving 8-Pin SOIC and 8-Pin Plastic DIP
Packages
APPLICATIONS
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– 10V from +5V Logic Supply
– 6V from a Single 3V Lithium Cell
Portable Handheld Instruments
Cellular Phones
LCD Display Bias Generator
Panel Meters
Operational Amplifier Power Supplies
GENERAL DESCRIPTION
The TC682 is a CMOS charge pump converter that
provides an inverted doubled output from a single positive
supply. An on-board 12kHz (typical) oscillator provides the
clock and only 3 external capacitors are required for full
circuit implementation.
Low output source impedance (typically 140
), pro-
vides output current up to 10mA. The TC682 features low
quiescent current and high efficiency, making it the ideal
choice for a wide variety of applications that require a
negative voltage derived from a single positive supply (for
example: generation of – 6V from a 3V lithium cell or – 10V
generated from a +5V logic supply).
The minimum external parts count and small physical
size of the TC682 make it useful in many medium-current,
dual voltage analog power supplies.
TC682
PIN CONFIGURATIONS
ORDERING INFORMATION
Part No.
Package
Temp. Range
T
C682COA
TC682CPA
T
C682EOA
TC682EPA
TC7660EV
8-Pin SOIC
8-Pin Plastic DIP
8-Pin SOIC
8-Pin Plastic DIP
Evaluation Kit for
Charge Pump Family
0
°
C to +70
°
C
0
°
C to +70
°
C
– 40
°
C to +85
°
C
– 40
°
C to +85
°
C
GND
+
–
+
–
+
GND
C2+
C2–
C1+
C1
C2
C1–
VIN
VIN
VOUT
VOUT
V
= – (2 x VIN
OUT
All Caps = 3.3
μ
F
COUT
TC682
+2.4V < VIN < +5.5V
TC682-2 8/21/96
TYPICAL OPERATING CIRCUIT
1
8
2
7
3
6
4
5
TC682CPA
TC682EPA
GND
VOUT
C2–
C1–
C2+
C1+
NC
NC
VIN
1
8
2
7
3
6
4
5
TC682COA
TC682EOA
GND
VOUT
C2–
C1–
C2+
C1+
VIN
8-Pin DIP
8-Pin SOIC
EVALUATION
KIT
AVAILABLE
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| TC682EOA | INVERTING VOLTAGE DOUBLER |
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| TC71COA | MICROMASTER - SYSTEM SUPERVISOR WITH POWER SUPPLY MONITOR, WATCHDOG AND BATTERY BACKUP |
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