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參數(shù)資料
| 型號(hào)： | MAX871 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Switched-Capacitor Voltage Inverters |
| 中文描述： | 開關(guān)電容電壓反相器 |
| 文件頁(yè)數(shù)： | 7/8頁(yè) |
| 文件大?。?/td> | 97K |
| 代理商： | MAX871 |
M
S witc hed-Capac itor Voltage Inverters
_______________________________________________________________________________________
7
capacitors. Because both the inverter and doubler use
part of the charge-pump circuit, loading either output
causes both outputs to decline toward GND. Make sure
the sum of the currents drawn from the two outputs
does not exceed 40mA.
Heavy Output Current Loads
Under heavy loads, where higher supply is sourcing cur-
rent 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 per-
formance. To ensure good layout, mount all compo-
nents as close together as possible, keep traces short
to minimize parasitic inductance and capacitance, and
use a ground plane.
MAX870
MAX871
“n”
MAX870
MAX871
“1”
2
1
V
OUT
C2
2
+V
IN
C1
C2
C1
3
3
4
4
5
5
1
V
OUT
= -nV
IN
…
…
Figure 4. Cascading MAX870s or MAX871s to Increase
Output Voltage
MAX870
MAX871
“n”
MAX870
MAX871
“1”
2
1
V
OUT
C2
2
+V
IN
C1
1
C1
3
3
4
4
5
5
V
OUT
= -V
IN
OUT
= R
OUT
OF SINGLE DEVICE
R
…
…
Figure 5. Paralleling MAX870s or MAX871s to Reduce Output
Resistance
MAX870
MAX871
2
1
V
OUT
= (2V
IN
) -
(V
FD1
) - (V
FD2
)
C2
+V
IN
C1
3
4
5
V
OUT
= -V
IN
C4
D1
D1, D2 = 1N4148
C3
D2
Figure 6. Combined Doubler and Inverter
MAX870
MAX871
4
1
GND
OUT
Figure 7. High V- Load Current
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX871C | Switched-Capacitor Voltage Inverters |
| MAX871D | Switched-Capacitor Voltage Inverters |
| MAX870 | Switched-Capacitor Voltage Inverters |
| MAX870EUK | Switched-Capacitor Voltage Inverters |
| MAX871EUK | Switched-Capacitor Voltage Inverters |
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| MAX8710ETG | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
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| MAX8710ETG+T | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) Linear-Reg LCD Panel Power Supply RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
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