参数资料
型号: MAX660CPA
厂商: Maxim Integrated Products
文件页数: 9/12页
文件大小: 0K
描述: IC REG SWITCHED CAP DBL INV 8DIP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 50
类型: 切换式电容器(充电泵),倍增器,反相
输出类型: 可调式
输出数: 1
输出电压: -1.5 V ~ -5.5 V,3 V ~ 11 V
输入电压: 1.5 V ~ 5.5 V
频率 - 开关: 10kHz,80kHz
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
CMOS Monolithic Voltage Converter
Combined Positive Supply Multiplication
and Negative Voltage Conversion
This dual function is illustrated in Figure 5. In this cir-
cuit, capacitors C1 and C3 perform the pump and
1M
3V LITHIUM BATTERY
DURACELL DL123A
1M
OPEN-DRAIN
LOW-BATTERY OUTPUT
reservoir functions respectively for generation of the
negative voltage. Capacitors C2 and C4 are respec-
3
8
8 IN
LBI
OUT
2
5V/100mA
DD
tively pump and reservoir for the multiplied positive
voltage. This circuit configuration, however, leads to
higher source impedances of the generated supplies.
This is due to the finite impedance of the common
150 μ F
2
4
MAX660
6
150
μ F
MAX667 LBO 7
1
620k
150 μ F
charge-pump driver.
SET 6
GND SHDN
1M
8
+V IN
5
4
5
220k
D1
D1, D2 = 1N4148
NOTE: ALL 150 μ F CAPACITORS ARE MAXC001, AVAILABLE FROM MAXIM.
2
3
MAX660
5
V OUT = -V IN
Figure 6. MAX660 generates a +5V regulated output from a 3V
lithium battery and operates for 16 hours with a 40mA load.
C1
4
6
D2
C2
V OUT = (2V IN ) -
C3
C4
(V FD1 ) - (V FD2 )
Figure 5. Combined Positive Multiplier and Negative Converter
_______________________________________________________________________________________
9
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