ViewSonic PJ870 Service Manual - Page 73

Output, Votage, Current, Ripple, Requirement

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PJ870 7-3.3 Output Votage, Current and Ripple Requirement Description System Board Voltage, 3.3Vout Current, 3.3Vout Ripple, 3.3Vout Voltage, 5.0Vout, Analog Current, 5.0Vout, Analog Ripple, 5.0Vout, Analog Voltage, 5.0Vout, Logic Current, 5.0Vout, Logic Ripple, 5.0Vout, Logic Voltage, 12.0Vout Current, 12.0Vout Ripple, 12.OVout Surge Current, 12.0Vout Min. Nom. Max. : Units COmmeCit 3.14 3.3 3.46 Volts DC - 1.7 2.0 Amps (Preliminary value) Millivolt, Measured with

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PJ870
7-3.3
Output
Votage,
Current
and
Ripple
Requirement
Description
System
Board
Min.
Nom.
Ma
.
x:
Units
COmmeCit
Voltage,
3.3Vout
3.14
3.3
3.46
Volts
DC
Current,
3.3Vout
-
1.7
2.0
Amps
(Preliminary
value)
Ripple,
3.3Vout
-
-
50
Millivolt,
pk-pk
Measured
with
<20
MHz
Bandwidth
Voltage,
5.0Vout,
Analog
5.0
5.125
5.25
Volts
DC
Current,
5.0Vout,
Analog
-
-
0.2
Amps
(Preliminary
value)
Ripple,
5.0Vout
Analog
,
-
-
50
Millivolt,
pk-pk
Measured
with
<20
MHz
Bandwidth.
Voltage,
5.0Vout,
Logic
5.0
5.125
5.25
Volts
DC
For
low
noise
circuit.
Current,
5.0Vout,
Logic
-
0.6
1.0
Amps
(Preliminary
value)
Ripple,
5.0Vout
Logic
,
-
-
50
Millivolt,
pk-pk
Measured
with
<20
MHz
Bandwidth.
Voltage,
12.0Vout
11.4
12.0
12.6
Volts
DC
Current,
12.0Vout
-
0.6
1.5
Amps
(Preliminary
value)
Ripple,
12.OVout
-
-
100
Millivolt,
pk-pk
Measured
with
<20
MHz
Bandwidth.
Surge
Current,
12.0Vout
2.0
Amps
For
4
seconds
at
start
ull
Note
:
1.
When
the
standby
signal
goes
to
logic
high,
the
fan
voltage
is
9.8V
min.
which
the
room
temperature
is
25°C
or
11.5V
-
12.5V
which
the
room
temperature
is
greater
than
31°C
-
33°C.
2.
When
the
standby
signal
goes
to
logic
low,
the
fan
voltage
is
7.5V
-
8.5V
[7-13]
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Corporation
Confidential
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