M54646AP 데이터 시트보기 (PDF) - Renesas Electronics
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M54646AP Datasheet PDF : 9 Pages
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M54646AP
If new trigger occurs during tOFF, it is ignored.
(5) Analog control
Stepless output current level variation is available by continuously changing voltage VR or feedback voltage to
comparator.
AREA OF SAFE OPERATION
1.0
0.8
B
0.6
0.4
A
B
0.2
0
0
10
20
30
40 45 50
DRIVER VOLTAGE VMM (V)
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.
✽ This regulation is for temporary electric power use. For
continuous use, be sure power dissipation does not go beyond
package’s operational range.
THERMAL DERATING
10.0
8.0
6.0
C
4.0
B
2.0
A
0
0
25
50
75 100
AMBIENT TEMPERATURE (°C)
θj-c = 8°C/W
A: Mounted on 25cm2 glassfiber epoxy resin circuit board with one
side copper-foiled
θc-a = 42°C/W
B: With aluminum heat sink (1t) 10cm2
θc-a = 25°C/W
C: With aluminum heat sink (1t) 100cm2
θc-a = 10°C/W
Tj(max) = 150°C
Rev.1.0, Sep.19.2003, page 5 of 8
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