参数资料
型号: TC1121CPA
厂商: Microchip Technology
文件页数: 7/14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:
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
3.6
Combined Positive Supply
V IN
Multiplication and Negative
Voltage Conversion
Figure 3-4 shows this dual function circuit, in which
capacitors C1 and C2 perform pump and reservoir
functions to generate negative voltage. Capacitors C3
and C4 are the respective capacitors for multiplied
positive voltage. This particular configuration leads to
higher source impedances of the generated supplies
due to the finite impedance of the common
charge-pump driver.
+
FC
V IN
8
D1, D2 = 1N4148
2
CAP +
OSC
D1
V OUT = V IN
C1
+
3
TC1121
GND V OUT
5
4
CAP –
SHDN
6
SHDN*
+
C2
C3
+
D2
+
C4
V OUT = ( 2V IN ) –
(V FD1 ) – (V FD2 )
*SHDN should be tied to V IN if not used.
FIGURE 3-4:
Combined Positive Multiplier and Negative Converter
? 2006 Microchip Technology Inc.
DS21358C-page 7
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