8
7
Specifications
Parameter
Value
Notes
Supply
voltage
(V
S
)
10V (min)
35V (max)
The supply voltage must be at
least 1V above the forward
voltage of the lighting being
driven. Ideally set this voltage as
low as possible to reduce the
total unit power dissipation.
Quiescent supply
current (IS)
15mA at V
S
=
48V
33mA at V
S
=
20V
PP860:
2A
continuous or
20A pulsed
Output
current
per channel (i
l
)
PP861:
2A
continuous or
2A pulsed
Maximum allowed current per
channel. Average current when
pulsing must not exceed the
maximum allowed continuous
output.
Total
allowed
unit
power
dissipation in free
air
P
D
=10 Watts
(max)
Total unit power
dissipation with
heatsink
P
D
=20 Watts
(max)
The total unit power dissipation is given by (0.7W) plus the sum
of (V
S
-V
F
) * I
L
for each current output where:
I
L
= Average output load current (Amps)
V
F
= Load forward voltage
V
S
= Supply voltage
