BD7959EFV Datasheet, PDF (1/19 Pages) Rohm – System Motor Driver IC for Half Height Drive (3 Sensors)

System Motor Driver ICs for CD / DVD / Blu-ray Drive and Recorder
System Motor Driver IC
for Half Height Drive (3 Sensors)
BD7959EFV
No.10012EAT02
●Description
BD7959EFV are ICs, developed for the spindle motor, actuator coil, tilt coil, stepping motor, SA (Spherical Aberration) motor
and the loading motor drive of the Blu-ray Drive. The spindle, stepping and SA motor driver use power MOSFET to reduce
power consumption and the actuator, tilt, and loading driver use a linear BTL drive system to reduce noise.
●Features
1) Correspondence to the Blu-ray drive control with built-in 9ch.
2) The spindle motor driver achieves low noise by ROHM's own energizing method.
3) Highly effective spindle, stepping and SA driver is achieved by PWM control driver. And the output current detection
resistance of stepping and SA driver is unnecessary by built-in internal detection circuit.
4) The actuator , tilt and loading driver achieve low noise by using linear BTL drive system.
5) ON/OFF of loading and other channels, brake mode of spindle driver and standby mode are selectable by the two
control terminals.
6) Built-in thermal-shut down circuit.
7) Built-in triangular wave generator.
8) Improved heat radiation efficiency utilizing HTSSOP package.
●Applications
Optical disk equipment, such as Blu-ray recorders
●Absolute maximum ratings
Parameter
POWER MOS power supply voltage
Symbol
SPVM,SL/SAVM
Ratings
Unit
15
#1
V
Preblock/BTL power block power supply voltage
Vcc,AVM
15
V
PWM control block power supply voltage
DVcc
7
V
Pick-up pull charge capacitor terminal voltage
Power dissipation
CHG_C
Pd
15
V
2.0
#2
W
Operating temperature range
Topr
-20 ~ 75
℃
Storage temperature
Tstg
-55 ~ 150
℃
Joint part temperature
Tjmax
150
℃
#1 POWER MOS output terminals (35~42pin, 45 ~ 47pin) are contained.
#2 PCB mounting (70mmX70mmX1.6mm, occupied copper foil is less than 3%, glass epoxy standard board).
Reduce by 16mW/℃ over 25℃
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2010.06 - Rev.A