AN8746SA Datasheet, PDF (4/5 Pages) Panasonic Semiconductor – PWM driver IC for portable CD player

AN8746SA
ICs for Compact Disc/CD-ROM Player
s Electrical Characteristics at V_C = 2.4 V, V_M12 = V_M34 = 2.4 V, V_GI = 7.0 V, AC = PC = 2.4 V, R_L = 8 Ω,
T_a = 25°C (continued)
• Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter
Symbol
Conditions
Min Typ Max Unit
Thermal protection
Thermal protection operating
temperature
T_THD
 145  °C
Thermal protection hysteresis
width
∆T_THD
 20  °C
s Usage Notes
1. Care should be taken so as not to cause any of the following conditions on use of this IC. If the following conditions
come up, the IC is likely to break down or to be smoking.
Short-circuit between output pins
Short-circuit between output pin and GND
Short-circuit between output pin and power supply
(Output pin refers to any of those Fo1 (pin 8), Ro1 (pin 6), Fo2 (pin 9), Ro2 (pin 11), Fo3 (pin 24), Ro3 (pin 22),
Fo4 (pin 25), Ro4 (pin 27). GND refers to any of those GND (pin 14), PGND1 (pin 7), PGND2 (pin 10), PGND3
(pin 23), PGND4 (pin 26). Power supply refers to any of those V_C (pin 2), V_GI (pin 19), V_M1 (pin 1), V_M2 (pin16),
V_M3 (pin 17), V_M4 (pin 32).
2. V_M1 monitor pin (pin 3) outputs approximately one half of V_M1 voltage and its upper limit is V_C supply voltage. This
is meant to prevent the DSP connected to this Pin from damage when the voltage exceeding an operating supply
voltage range is inputted to the V_M1 pin. On use of this pin, therefore, note that no value exceeding V_C is outputted.
s Application Notes
1. P_D  T_a curves of SSOP032-P-0300
1.400
1.288
1.200
1.000
0.800
P_D  T_a
Mounted on standard board
(glass epoxy:
50 mm × 50 mm × t0.8 mm)
R_th(j-a) = 97.0°C/W
0.667
0.600
0.400
Independent IC
without a heat sink
R_th(j-a) = 187.2°C/W
0.200
0.000
0
25
50
75
100
125 150
Ambient temperature T_a (°C)
4