MAX864 Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX864 Datasheet PDF : 12 Pages
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Dual-Output Charge Pump with Shutdown
VIN
3.3µF
1 C1-
V+ 8
2 C2+ MAX864 C1+ 7
3.3µF 3
C2-
IN 6
4 V-
GND 5
3.3µF
1 C1-
V+ 8
2 C2+ MAX864 C1+ 7
3.3µF 3
C2-
IN 6
4 V-
GND 5
V+ OUT
3.3µF
VIN
GND
3.3µF
V- OUT
Figure 4. Paralleling Two MAX864s
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.
GND 11
MAX864
5
V-
Figure 5. High V- Load Circuit
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