MB3853 Datasheet, PDF (12/14 Pages) Fujitsu Component Limited. – 1A Motor Drive IC for Motor Applications

MB3853
(Continued)
Allowable loss vs. Ambient temperature
25
(1) Infinite heat dissipation plate
(2) 900 cm² × 2 mm Al plate
(3) 400 cm² × 2 mm Al plate
20
(4) 200 cm² × 2 mm Al plate
(5) 100 cm² × 2 mm Al plate
(6) No dissipation plate
15
(4)
(1)
(2)
10
(5)
(3)
5
(6)
Junction temperature vs. duty ratio
100
Drive current
80
0.3 A
0.5 A
60
1A
40
20
0
25 50 75 100 125 150
Ambient temperature Ta (°C)
0
−40 0 40 80 120 160
Junction temperature TJ (°C)
Notes : • For stable operation over periods of extended usage, the duty ratio should be kept below
the characteristic curve.
• Junction temperature should be maintained at TJ ≤ +150 °C.
(Tj calculation)
TJ = TC + ∆T
∆T = 4 ( °C/W) × PDI
PDI = VCC × ICC + ∆VO × IO
∆VO = (VCC − VOH) +VOL
TC : case temperature, ∆T : difference between case and junction temperature
PDI : IC power consumption (W)
s ORDERING INFORMATION
Part Number
MB3853PS
Package
Plastic SIP, 9 pins
(SIP-9P-M02)
Remarks
12