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参数资料
| 型号： | TC682COA |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 12 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | SOIC-8 |
| 文件页数： | 11/14页 |
| 文件大小： | 534K |
| 代理商： | TC682COA |
TC682
DS21453C-page 6
2006 Microchip Technology Inc.
4.3
Paralleling Devices
Paralleling
multiple
TC682s
reduces
the
output
resistance of the converter. The effective output
resistance is the output resistance of a single device
divided by the number of devices. As illustrated in
Figure , each requires separate pump capacitors C1
and C2, but all can share a single reservoir capacitor.
4.4
-5V Regulated Supply From A
Single 3V Battery
Figure 4-3 shows a -5V power supply using one 3V
battery. The TC682 provides -6V at VOUT, which is
regulated to -5V by the negative LDO. The input to the
TC682 can vary from 3V to 5.5V without affecting
regulation appreciably. A TC54 device is connected to
the battery to detect undervoltage. This unit is set to
detect at 2.7V. With higher input voltage, more current
can be drawn from the outputs of the TC682. With 5V
at VIN, 10 mA can be drawn from the regulated output.
Assuming 150
Ω source resistance for the converter,
with IL
–= 10 mA, the charge pump will droop 1.5V.
FIGURE 4-2:
Paralleling TC682 for Lower Output Source Resistance
FIGURE 4-3:
Negative Supply Derived from 3V Battery
10
μF
10
μF
10
μF
10
μF
22
μF
VIN
GND
Negative
Supply
TC682
GND
+
–
+
–
+
–
+
–
+
–
VIN
C1+
C2+
C1–
C2–
V–OUT
VIN
C1+
C2+
C1–
C2–
V–OUT
C–OUT
VSS
GND
TC682
3V
Ground
-5 Supply
LOW BATTERY
Negative LDO
Regulator
TC54VC2702Exx
1
μF
+
–
+
–
+
–
+
–
+
–
10
μF
22
μF
10
μF
VIN
C1+
C2+
C1–
C2–
VIN
VOUT
V–OUT
COUT–
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| TC74A1-3.3VCTTR | SPECIALTY ANALOG CIRCUIT, PDSO5 |
| TC74A1-5.0VCTTR | SPECIALTY ANALOG CIRCUIT, PDSO5 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC682COA713 | 功能描述:电荷泵 Inverting V Doubler RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| TC682CPA | 功能描述:电荷泵 Inverting V Doubler RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| TC682EOA | 功能描述:电荷泵 Inverting V Doubler RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| TC682EOA713 | 功能描述:电荷泵 Inverting V Doubler RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| TC682EPA | 功能描述:电荷泵 Inverting V Doubler RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
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