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TC7660EPA датащи(PDF) 1 Page - Microchip Technology

номер детали TC7660EPA
подробное описание детали  5V To 짹10V Voltage Converter
Download  18 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC7660EPA датащи(HTML) 1 Page - Microchip Technology

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© 2005 Microchip Technology Inc.
DS21486C-page 1
TCM680
Features
• 99% Voltage Conversion Efficiency
• 85% Power Conversion Efficiency
• Input Voltage Range:
- +2.0V to +5.5V
• Only 4 External Capacitors Required
• 8-Pin SOIC Package
Applications
• ±10V From +5V Logic Supply
• ±6V From a 3V Lithium Cell
• Handheld Instruments
• Portable Cellular Phones
• LCD Display Bias Generator
• Panel Meters
• Operational Amplifier Power Supplies
Typical Operating Circuit
General Description
The TCM680 is a dual charge pump, voltage converter
that produces output voltages of +2VIN and -2VIN from
a single input voltage of +2.0V to +5.5V. Common
applications include ±10V from a single +5V logic
supply and ±6V from a +3V lithium battery.
The TCM680 is packaged in 8-pin SOIC and PDIP
packages and requires only four inexpensive, external
capacitors. The charge pumps are clocked by an on-
board 8 kHz oscillator. Low output source impedances
(typically 140
Ω) provide maximum output currents of
10 mA for each output. Typical power conversion effi-
ciency is 85%.
High efficiency, small size and low cost make the
TCM680 suitable for a wide variety of applications that
need both positive and negative power supplies
derived from a single input voltage.
Package Type
VOUT
- = -(2 x V
IN)
GND
TCM680
VOUT
+
+
+
+
GND
GND
+
VOUT
+ = (2 x V
IN)
+5V
VIN
VOUT
-
C1
+
C2
+
C1
-
C2
-
C1
4.7 µF
C2
4.7 µF
C4
4.7 µF
C3
4.7 µF
1
2
3
4
8
7
6
5
TCM680CPA
TCM680EPA
GND
VOUT
-
C1
+
PDIP
VIN
C2
+
C1
-
C2
-
VOUT
+
1
2
3
4
8
7
6
5
TCM680COA
TCM680EOA
GND
VOUT
-
C1
+
SOIC
VIN
C2
+
C1
-
C2
-
VOUT
+
+5V To ±10V Voltage Converter
Obsolete Device


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