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参数资料
| 型号： | TC2684EUART |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 170 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | MSOP-8 |
| 文件页数： | 1/7页 |
| 文件大小： | 710K |
| 代理商： | TC2684EUART |
TC2682/3/4-1 8/14/00
TC2682
TC2683
TC2684
2001 Microchip Technology Inc.
DS21548A
Inverting Charge Pump Voltage Doublers
TYPICAL OPERATING CIRCUIT
PIN CONFIGURATION
ORDERING INFORMATION
Part No.
Package
Osc Freq (kHz) Temp. Range
TC2682EUA
8-Pin MSOP
12
– 40
°C to +85°C
TC2683EUA
8-Pin MSOP
35
– 40
°C to +85°C
TC2684EUA
8-Pin MSOP
125
– 40
°C to +85°C
GENERAL DESCRIPTION
The TC2682, TC2683 and TC2684 are CMOS charge
pump converters that provide an inverted doubled output
from a single positive supply. An on-board oscillator pro-
vides the clock and only
three external capacitors are
required for full circuit implementation. Switching frequen-
cies are 12kHz for the TC2682, 35kHz for the TC2683, and
125kHz for the TC2684.
Low output source impedance (typically 120
), pro-
vides output current up to 10mA. The TC2682, TC2683 and
TC2684 feature a 1.8V to 5.5V operating voltage range and
high efficiency, which make them an ideal choice for a wide
variety of applications requiring a negative doubled voltage
derived from a single positive supply (for example: genera-
tion of -7.2V from a +3.6V lithium cell or -10V generated from
a +5V logic supply).
The minimum external parts count and small physical
size make this family of products useful for a wide variety of
negative bias power supply applications.
FEATURES
I Small 8-Pin MSOP Package
I Operation from 1.8V to 5.5V
I 120 Ohms (typ.) Output Resistance
I 99% Voltage Conversion Efficiency
I Only 3 External Capacitors Required
I Power-Saving Shutdown Mode
I Low Active Supply Current
.............................................. 95
A (typ.) for TC2682
............................................ 225
A (typ.) for TC2683
........................................... .700
A (typ.) for TC2684
TYPICAL APPLICATIONS
I LCD Panel Bias
I Cellular Phones PA Bias
I Pagers
I PDAs, Portable Data Loggers
I Battery Powered Devices
C1+
C2+
VIN
C1–
C2
C2–
C1
TC2682
VOUT
+
– COUT
INPUT
GND
Notes:
1) C1 must have a voltage rating greater
than or equal to VIN
2) C2 and COUT must have a voltage rating greater
than or equal to 2VIN
VOUT = -(2xV )
IN
TC2683
TC2684
1
2
3
4
5
6
7
8
C1-
C1+
C2+
C2-
TC2682
TC2683
TC2684
VIN
VOUT
NC
GND
8-Pin MSOP
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