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參數(shù)資料
| 型號： | TC7662BCPA |
| 廠商： | TelCom Semiconductor, Inc. |
| 英文描述： | CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER |
| 中文描述： | 電荷泵型DC - DC電壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 7/9頁 |
| 文件大?。?/td> | 133K |
| 代理商： | TC7662BCPA |
4-89
TELCOM SEMICONDUCTOR, INC.
7
6
5
4
3
1
2
8
TC7662B
CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
1
2
3
4
8
7
6
5
TC7662B
1μF
+
+
1μF
–
+5 LOGIC SUPPLY
TTL DATA
INPUT
RS232
DATA
OUTPUT
11
3
12
16
4
15
13
14
1
IH5142
+5V
-5V
Figure 13. RS232 Levels from a Single 5V Supply
Regulated Negative Voltage Supply
In some cases, the output impedance of the TC7662B
can be a problem, particularly if the load current varies
substantially. The circuit of Figure 12 can be used to over-
come this by controlling the input voltage, via an ICL7611
low-power CMOS op amp, in such a way as to maintain a
nearly constant output voltage. Direct feedback is advisable,
since the TC7662B’s output does not respond instanta-
neously to change in input, but only after the switching delay.
The circuit shown supplies enough delay to accommodate
the TC7662B, while maintaining adequate feedback. An
increase in pump and storage capacitors is desirable, and
the values shown provide an output impedance of less than
5
to a load of 10mA.
1
2
3
4
8
7
6
5
TC7662B
100μF
+
V+
100μF
V
OUT
-
50k
100k
+8V
50k
10μF
–
+
800k
250K
VOLTAGE
ADJUST
+8V
56k
–
+
Figure 12. Regulating the Output Voltage
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TC7662BEPA | CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER |
| TC7662BCOA | CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER |
| TC7662BEOA | CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER |
| TC811 | 3-1/2 DIGIT A/D CONVERTER WITH HOLD AND DIFFERENTIAL REFERENCE INPUTS |
| TC811 | 3-1/2 Digit Analog-To-Digital Converter with Hold and Differential Reference Inputs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC7662BCPA | 制造商:Microchip Technology Inc 功能描述:DC/DC Charge Pump Converter (DC-DC) IC |
| TC7662BEOA | 功能描述:電荷泵 High Voltage 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 |
| TC7662BEOA | 制造商:Microchip Technology Inc 功能描述:DC/DC Charge Pump Converter (DC-DC) IC |
| TC7662BEOA713 | 功能描述:電荷泵 High Voltage 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 |
| TC7662BEPA | 功能描述:電荷泵 High Voltage 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 |
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