BH6518FS
Optical disc ICs
1/7
4-channel PWM driver for CD and MD
players
BH6518FS
The BH6518FS is a 4-channel PWM driver for CD and MD player motors and actuators. The power MOSFET in the
output stage assures low power consumption for applications.
!Applications
CD and MD players
!Features
1) Internal 4-ch power MOS H-bridge.
2) Adaptable for PWM input.
3) Built-in charge-pump circuit for step-up.
4) Low ON resistance : 1.2Ω (Typ.).
5) Thermal shutdown circuit.
6) Low power consumption.
7) 32pin SSOP-A package. Compact package.
!Absolute maximum ratings (Ta=25°C)
Parameter Symbol Limits Unit
H-bridge supply voltage VM 9V
V
V
Control circuit supply voltage VDD 9
mW
mA
Predriver supply voltage
Driver output current
Power dissipation
Operating temperature
VG (2pin) 12
1000
850
∗
°C
Storage temperature
IO
Pd
Topr
Tstg
−40~+85
−55~+150 °C
∗ PCB(70mm×70mm×1.6mm glass epoxy) mounting.
Reduced by 6.8mW for each increase in Ta of 1°C over 25°C.
!Recommended operating conditions (Ta=25°C)
Parameter
H-bridge supply voltage
Control circuit supply voltage
Predriver supply voltage
Pulse input frequency
∗ When the internal charge pump is not used. When it is used : 2.7~5.5V.
VM
∗
VM+3.0
VDD
VG (2pin)
fIN
1.6 5.5 V
V
V
kHz
5.0
2.7 5.53.0
11.510
− 200176.4
Symbol Min. Typ. Max. Unit