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参数资料
| 型号： | TC1121CUA |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 200 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | MSOP-8 |
| 文件页数： | 11/14页 |
| 文件大小： | 497K |
| 代理商： | TC1121CUA |
TC1121
DS21358C-page 6
2006 Microchip Technology Inc.
3.4
Cascading Devices
To produce greater negative magnitudes of the initial
supply voltage, the TC1121 may be cascaded (see
Figure 3-2). Resulting output resistance is approxi-
mately equal to the sum of individual TC1121 ROUT
values. The output voltage (where n is an integer
representing the number of devices cascaded) is
defined by VOUT = -n (VIN).
3.5
Paralleling Devices
To reduce output resistance, multiple TC1121s may be
paralleled (see Figure 3-3). Each device needs a pump
capacitor C1, but the reservoir capacitor C2 serves all
devices. The value of C2 should be increased by a
factor of n (the number of devices).
FIGURE 3-2:
Cascading TC1121s to Increase Output Voltage
FIGURE 3-3:
Paralleling TC1121s to Reduce Output Resistance
C1
C1n
4
3
2
3
5
8
7
5
2
C2
VIN
+
C2n
TC1121
GND
OSC
CAP+
CAP–
FC
SHDN
VOUT
VIN
VOUT
VIN
SHDN
SHDN*
“1”
“n”
+
*SHDN should be tied to VIN if not used.
C1
C1n
4
3
2
3
5
8
7
5
2
C2
V+IN
TC1121
GND
OSC
CAP+
CAP–
FC
SHDN
VOUT
VIN
SHDN
SHDN*
*SHDN should be tied to VIN if not used.
“1”
“n”
+
7
OSC
ROUT = ROUT (of TC1121)/n(number of devices)
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相关代理商/技术参数 |
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| TC1121CUA713 | 功能描述:电荷泵 w/ Shutdown 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 |
| TC1121EOA | 功能描述:电荷泵 w/ Shutdown 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 |
| TC1121EOA | 制造商:Microchip Technology Inc 功能描述:DC/DC Charge Pump Converter IC |
| TC1121EOA713 | 功能描述:电荷泵 w/ Shutdown 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 |
| TC1121EPA | 功能描述:电荷泵 w/ Shutdown 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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