M54646AP
If new trigger occurs during tOFF, it is ignored.
(5) Analog control
Stepless output current level variation is available by continuously changing voltage V
R
or feedback voltage to
comparator.
AREA OF SAFE OPERATION
1.0
OUTPUT CURRENT Io (A)
0.8
B
0.6
A: Recommended operational range
B: External Schottky diode to be connected between output
terminal and power terminal as well as between output terminal
and GND.
�½
0.4
A
0.2
B
This regulation is for temporary electric power use. For
continuous use, be sure power dissipation does not go beyond
package’s operational range.
0
0
10
20
30
40 45 50
DRIVER VOLTAGE V
MM
(V)
THERMAL DERATING
10.0
POWER DISSIPATION (W)
8.0
6.0
C
4.0
B
2.0
A
θj-c
= 8°C/W
A: Mounted on 25cm
2
glassfiber epoxy resin circuit board with one
side copper-foiled
θc-a
= 42°C/W
B: With aluminum heat sink (1t) 10cm
2
θc-a
= 25°C/W
C: With aluminum heat sink (1t) 100cm
2
θc-a
= 10°C/W
Tj
(max)
= 150°C
0
0
25
50
75
100
AMBIENT TEMPERATURE (°C)
Rev.1.0, Sep.19.2003, page 5 of 8
RENESAS [ RENESAS TECHNOLOGY CORP ]
