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| 型号： | TC1121CPA |
| 厂商： | Microchip Technology |
| 文件页数： | 6/14页 |
| 文件大小： | 0K |
| 描述： | IC REG SWITCHED CAP INV ADJ 8DIP |
| 产品变化通告： | Obsolescence 22/Feb/2011 |
| 标准包装： | 60 |
| 类型： | 切换式电容器（充电泵），反相 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | -2.4 V ~ -5.5 V |
| 输入电压： | 2.4 V ~ 5.5 V |
| 频率 - 开关： | 10kHz ~ 200kHz |
| 电流 - 输出： | 100mA |
| 同步整流器： | 无 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 包装： | 管件 |
| 供应商设备封装： | 8-PDIP |
| 产品目录页面： | 663 (CN2011-ZH PDF) |
| 其它名称： | 158-1070 158-1070-ND |
TC1121
3.4
Cascading Devices
3.5
Paralleling Devices
V IN
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 R OUT
values. The output voltage (where n is an integer
representing the number of devices cascaded) is
defined by V OUT = -n (V IN ).
+
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).
FC
V IN 8
FC
V IN 8
C1
+
2 CAP + OSC
TC1121
3 GND
SHDN
C1n
SHDN*
+
2
3
CAP + OSC
TC1121
GND
SHDN
7
SHDN*
4 CAP –
“1”
V OUT 5
4
CAP –
“n”
V OUT 5
+
C2n
V OUT
*SHDN should be tied to V IN if not used.
+
C2
FIGURE 3-2:
Cascading TC1121s to Increase Output Voltage
V+ IN
FC
V IN 8
FC
V IN 8
GND
C1
+
3
2 CAP + OSC 7
TC1121
SHDN
OSC
C1n
SHDN*
+
2
3
CAP + OSC
TC1121
GND
SHDN
7
SHDN*
4
CAP –
“1”
V OUT 5
4
CAP –
“n”
V OUT
5
R OUT = R OUT (of TC1121)/n(number of devices)
*SHDN should be tied to V IN if not used.
+
C2
FIGURE 3-3:
DS21358C-page 6
Paralleling TC1121s to Reduce Output Resistance
? 2006 Microchip Technology Inc.
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| TC1121CUA | 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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