M56781FP Datasheet, PDF (1/6 Pages) Mitsubishi Electric Semiconductor – 2-CHANNEL ACTUATOR MOTOR DRIVER

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.
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.
APPLICATION
DVD, DVD-ROM, CD-ROM, CD-PLAYER
PIN CONFIGURATION (TOP VIEW)
GND 1
VM2+ 2
MUTE2B 3
MUTE2A 4
MUTE1 5
VCC2 6
VCC1 7
IN- 8
IN+ 9
OPOUT 10
VM1+ 11
GND 12
24 GND
23 VM2-
22 CTL2OUT
21 CTL2+
20 CTL2-
19 VREF
18 TSDS
17 CTL1-
16 CTL1+
15 CTL1OUT
14 VM1-
13 GND
Outline 24P2Q-A
BLOCK DIAGRAM
OPOUT IN+ IN-
10 9 8
CTL1+ CTL1- CTL1OUT
16 17
15
+ - _VCC2
A3
+-
A1
VM1+
11
CH1
25k
25k
PA
-+
×5
5k
5k
VM1-
14
25k
25k
PA
-+
×5
5k
5k
VCC1
MUTE1
5
H
: Mute On
L, Open : Mute Off
VCC1
2
CH1
MUTE
VCC1
7
GND
+
-
1.4V
Vrefm
Vrefm
VCC2
TSD
19
VREF
5k
5k
A2
+-
×5
-+
PA
25k
25k
CH2
21 20
22
CTL2+ CTL2- CTL2OUT
2
VM2+
5k
5k
×5
-+
PA
25k
25k
23
VM2-
CH2
MUTE
VCC2
VCC2
6
2
VCC2
H, H
Mute On
43
18
MUTE2A MUTE2B TSDS