AN8481SB Datasheet, PDF (5/6 Pages) Panasonic Semiconductor – Spindle motor driver IC for optical disk

ICs for Motor
AN8481SB
s Usage Notes
Prevent this IC from being line-to-ground fault. (To be concrete, do not short-circuit any of pins A1 (pin 27), A2 (pin
26) and A3 (pin 25) to V_REG pin (pin 19) or VM pin (pin 20).)
s Application Notes
• P_D  T_a curves of HSOP042-P-0400
P_D  T_a
2 400
2 232
2 200
2 000
1 800
Mounted on standard board
(glass epoxy: 75 × 75 × t1.6 mm³)
Rth(j-a) = 56°C/W
PD = 2 232 mW (25°C)
1 600
1 400
1 200
1 042
1 000
800
Independent IC
without a heat sink
600
Rth( j-a) = 120°C/W
PD = 1 042 mW (25°C)
400
200
0
0
25
50
75
100 125 150
Ambient temperature T_a (°C)
• Phase conditions between Hall input and output current
Phase of Hall pin
H1+ H2+ H3+
A
H
M
L
B
H
L
M
C
M
L
H
D
L
M
H
E
L
H
M
F
M
H
L
H1
H3
H2
H1
H2
H3
0
ECR
EC
A3
A2
A1
Emit
A2 A3
A1
0
Output current
0
Sink
ABCDE F
5