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參數資料
| 型號： | TCM680EOA |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 21 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, MS-012, SOIC-8 |
| 文件頁數： | 1/18頁 |
| 文件大小： | 322K |
| 代理商： | TCM680EOA |
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
+
VOUT
+ = (2 x V
IN)
+5V
VIN
VOUT
-
C1
+
C2
+
C1
-
C2
-
C1
4.7 F
C2
4.7 F
C4
4.7 F
C3
4.7 F
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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相關代理商/技術參數 |
參數描述 |
|---|---|
| TCM680EOATR | 功能描述:電荷泵 Charge Pump Cnverter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| TCM680EPA | 功能描述:電荷泵 Charge Pump Cnverter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| TCM7805A-5.0VBB | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TCM7812A-12.0VBB | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TCM7812A-12.OVBB | 制造商:ON Semiconductor 功能描述: |
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