M62295GP Ver la hoja de datos (PDF) - Renesas Electronics
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M62295GP Datasheet PDF : 11 Pages
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M62295GP
Detection of tube current
Detection of tube current is made by Iscp terminal.
Detection voltage for Iscp terminal is set 1.25 V.
After power is on, when Iscp voltage does not rise up to 1.25 V by timer-L (Cscp1) time, or when Iscp voltage
becomes 1.25 V or less after start-up, abnormality is detected to move on to the protection operation mode in
Figure 1.
If Iscp voltage is less than 1.25 V, light control is not made. (100%)
Detection of feedback voltage
Detection of feedback voltage is made by FB terminal.
When FB terminal voltage goes down to FB low detection voltage (0.25 V) or less, or when it rise up to FB
terminal high detection voltage or more, abnormality is detected to move on to the protection operation mode in
Figure 1.
Table 1 Protection Operation Mode at a Glance
Protection
Triggers for Protection Operation
Timer-latch Time
Operation State
Operation Mode Ampout = "H" Ampout = "L" IO = 0 2 s
10 ms
Normal start-up
Start-up in
IO = Max Operation stop after
O
O
shortcircuited state
10 ms
IO = 0
Operation stop
O
instantaneously
O
O
Start-up in open state
Operation stop after
O
O
2 s.
Start-up in black OFF
Operation stop after
O
O
mode
2 s.
ON
Normal start-up if
∆
O
turn-on is made
within 2 s.
Shortcircuit while
in operation
IO = Max Operation stop
instantaneously
O
O
IO = 0
Operation stop
O
instantaneously
O
O
Open while in operation
Operation stop
O
O
instantaneously
Notes: 1. Timer-latch time refers to the time under Cscp = 1 µF, Cscp2 = 0.1 µF.
2. Amp. output is "H" when tube current Io equals to 0, "L" when it is at its minimum. Detection voltage is 2.5 V
("H" side), 0.25 V ("L" side).
REJ03D0856-0201 Rev.2.01 Nov 14, 2007
Page 8 of 10
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