M56781FP Datasheet Text
MITSUBISHI <CONTROL / DRIVER IC>
M56781FP
2-CHANNEL ACTUATOR MOTOR DRIVER
DESCRIPTION
The M56781FP is a semiconductor IC developed as the motor driver used DVD, DVD-ROM, CD-ROM and CD Player. This device include 2 channel BTL drivers and can drive 2 actuators with one IC at the same time. Also, the mute circuit, thermal protection circuit and VREF voltage monitor circuit functions are included.
PIN CONFIGURATION (TOP VIEW)
GND VM2+ MUTE2B MUTE2A MUTE1 VCC2 VCC1 ININ+
1 2 3 4 5 6 7 8 9
24 GND 23 VM222 CTL2OUT 21 CTL2+ 20 CTL219 VREF 18 TSDS 17 CTL116 CTL1+ 15 CTL1OUT 14 VM113 GND
Features q Low output saturation voltage (typ. 1.35V at 0.5A). q Wide operating supply voltage range (4.5
- 15V). q High current drive capability (maximum 0.9A). q Low crossover distortion. q High frequency capability.
M56781FP
APPLICATION
DVD, DVD-ROM, CD-ROM, CD-PLAYER
OPOUT 10 VM1+ 11 GND 12
Outline 24P2Q-A
BLOCK DIAGRAM
OPOUT IN+ 10 9 IN8 CTL1+ CTL1- CTL1OUT 16 17 15 VM1+ 11 CH1 +
- VCC2 A3 + A1 5k ×5 5k 5k ×5 5k 25k PA + 25k 25k 25k PA + VCC1 2
CH1 MUTE
VM114 VCC1
MUTE1 5 H : Mute On L, Open : Mute Off
VCC1 7
Vrefm GND 1, 12, 13, 24 19 VREF + 1.4V Vrefm
VCC2
TSD
5k ×5 A2 + 25k PA +
5k
5k ×5 + PA
5k...