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| 型号： | MAX829EUK+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/8页 |
| 文件大小： | 0K |
| 描述： | IC REG MULTI CONFIG ADJ SOT23-5 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 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： | -1.15 V ~ 6 V，±2.3 V ~ ±12 V |
| 输入电压： | 1.5 V ~ 5.5 V |
| 频率 - 开关： | 35kHz |
| 电流 - 输出： | 25mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 包装： | 标准包装 |
| 供应商设备封装： | SOT-23-5 |
| 其它名称： | MAX829EUK+TDKR |
Switched-Capacitor Voltage Inverters
3
2
…
+V IN
3
2
2
R OUT OF SINGLE DEVICE
R OUT = NUMBER OF DEVICES
…
+V IN
2
C1
4
5
MAX828
MAX829
“1”
1
C1
…
4
5
MAX828
MAX829
“n”
1
V OUT
C2
C1
3
4
5
MAX828
MAX829
“ 1 ”
1
C1
3
4
5
MAX828
MAX829
“ n ”
1
V OUT
C2
V OUT = -nV IN
…
V OUT = -V IN
C2
Figure 4. Cascading MAX828s or MAX829s to Increase
Output Voltage
+V IN
Figure 5. Paralleling MAX828s or MAX829s to Reduce Output
Resistance
C1
3
4
2
D1, D2 = 1N4148
GND
4
MAX828
MAX829
D1
5
1
V OUT = -V IN
MAX828
MAX829
C2
C3
D2
C4
V OUT = (2V IN ) -
(V FD1 ) - (V FD2 )
OUT
1
Figure 6. Combined Doubler and Inverter
Heavy Output Current Loads
When under heavy loads, where higher supply is sourcing
current into OUT, the OUT supply must not be pulled
above ground. Applications that sink heavy current into
OUT require a Schottky diode (1N5817) between GND
and OUT, with the anode connected to OUT (Figure 7).
Layout and Grounding
Good layout is important, primarily for good noise perfor-
mance. To ensure good layout, mount all components as
close together as possible, keep traces short to mini-
mize parasitic inductance and capacitance, and use a
ground plane.
Figure 7. High V- Load Current
Shutting Down the MAX828/MAX829
For a similar device with logic-controlled shutdown,
please refer to the MAX1719/MAX1720/MAX1721. To
add manual shutdown control to the MAX828/MAX829,
use the circuit in Figure 8. The output resistance of the
MAX828/MAX829 will typically be 20 ? plus two times
the output resistance of the buffer driving IN. The 0.1μF
capacitor at the IN pin absorbs the transient input cur-
rents of the MAX828/MAX829.
The output resistance of the buffer driving the IN pin can
be reduced by connecting multiple buffers in parallel.
The polarity of the SHUTDOWN signal can also be
changed by using a noninverting buffer to drive IN.
_______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX829EUK-TG05 | 功能描述:电荷泵 Switched-Capacitor Voltage Inverter 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 |
| MAX829SNTR | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| MAX830CWE | 功能描述:直流/直流开关调节器 RoHS:否 制造商:Maxim Integrated 最大输入电压:30 V 开关频率:110 KHz 输出电压: 输出电流:1.7 A (Typ) 输出端数量:1 最大工作温度:+ 70 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-16 Wide |
| MAX830CWE+ | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX830CWE+T | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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