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| 型号： | MAX680CPA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/8页 |
| 文件大小： | 0K |
| 描述： | IC REG MULTI CONFIG ADJ DL 8DIP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 升压（升压），切换电容（充电泵），反相 |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | ±4 V ~ ±12 V |
| 输入电压： | 2 V ~ 6 V |
| 频率 - 开关： | 8kHz |
| 电流 - 输出： | 10mA |
| 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： | 1409 (CN2011-ZH PDF) |
+5V to ±10V Voltage Converters
_______________Detailed Description
The MAX681 contains all circuitry needed to implement
a dual charge pump. The MAX680 needs only four
V CC IN
capacitors. These may be inexpensive electrolytic
capacitors with values in the 1μF to 100μF range. The
MAX681 contains two 1.5μF capacitors as C1 and C2,
and two 2.2μF capacitors as C3 and C4. See Typical
C1
4.7 μ F
MAX680
Operating Characteristics.
Figure 2a shows the idealized operation of the positive
C2
4.7 μ F
1
2
3
4
C1-
C2+
C2-
V-
V+
C1+
V CC
GND
8
7
6
5
C3
10 μ F
C4
10 μ F
I L +
I L -
R L +
R L -
V+ OUT
GND
voltage converter. The on-chip oscillator generates a
50% duty-cycle clock signal. During the first half of the
cycle, switches S2 and S4 are open, S1 and S3 are
closed, and capacitor C1 is charged to the input volt-
age V CC . During the second half-cycle, S1 and S3 are
open, S2 and S4 are closed, and C1 is translated
upward by V CC volts. Assuming ideal switches and no
load on C3, charge is transferred onto C3 from C1 such
that the voltage on C3 will be 2V CC , generating the
positive supply.
Figure 1. Test Circuit
a)
V- OUT
V+
b)
V+
Figure 2b shows the negative converter. The switches
of the negative converter are out of phase from the pos-
itive converter. During the second half of the clock
cycle, S6 and S8 are open and S5 and S7 are closed,
charging C2 from V+ (pumped up to 2V CC by the posi-
tive charge pump) to GND. In the first half of the clock
S1
C1+
S2
S5
C2+
S6
V CC
GND
C1
C3
I L +
R L +
C2
I L -
R L -
C4
S3
S4
S7
S8
GND
C1-
V CC
GND
C2-
V-
8kHz
Figure 2. Idealized Voltage Quadrupler: a) Positive Charge Pump; b) Negative Charge Pump
4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX680CPA+ | 功能描述:电荷泵 5V to +/-10V Voltage Converter 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 |
| MAX680CSA | 功能描述:电荷泵 5V to +/-10V Voltage Converter 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 |
| MAX680CSA | 制造商:Maxim Integrated Products 功能描述:IC DUAL VOLT CONVERTER SOIC8 680 |
| MAX680CSA+ | 功能描述:电荷泵 5V to +/-10V Voltage Converter 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 |
| MAX680CSA+T | 功能描述:电荷泵 5V to +/-10V Voltage Converter 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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