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參數(shù)資料
| 型號(hào)： | MAX864 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual-Output Charge Pump with Shutdown |
| 中文描述： | 雙輸出電荷泵，帶有關(guān)斷 |
| 文件頁(yè)數(shù)： | 9/12頁(yè) |
| 文件大?。?/td> | 122K |
| 代理商： | MAX864 |
M
Dual-Output Charge Pump with S hutdown
_______________________________________________________________________________________
9
Heavy Output Current Loads
When under heavy loads, where V+ is sourcing current
into V- (i.e., load current flows from V+ to V-, rather than
from supply to ground), do not allow the V- supply to
pull above ground. In applications where large currents
flow from V+ to V-, use a Schottky diode (1N5817)
between GND and V-, with the anode connected to
GND (Figure 5).
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. Connecting all N.C. pins to a
ground plane improves thermal dissipation.
MAX864
V+
1
2
3
4
C1-
GND
3.3
μ
F
3.3
μ
F
3.3
μ
F
3.3
μ
F
3.3
μ
F
3.3
μ
F
V+ OUT
V
IN
V- OUT
8
7
6
5
C2+
C2-
V-
C1+
IN
GND
MAX864
V+
1
2
3
4
C1-
8
7
6
5
C2+
C2-
V
IN
V-
C1+
IN
GND
Figure 4. Paralleling Two MAX864s
MAX864
GND
11
5
V-
Figure 5. High V- Load Circuit
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