Sanyo DC-MCR50 - Page 12

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IC BLOCK DIAGRAM & DESCRIPTION
IC904 LC1641 (Motor Driver)
123456 789 10 11 12
131415161718192021222324
Vcc Vref VIN4 VG4 Vo8 Vo7 GND Vo6 Vo5 VG3 VIN3 CD RES
Vcc Mute VIN1 VG1 Vo1 Vo2 GND Vo3 Vo4 VG2 VIN2 Reg OUT Reg IN
Vcc
11k Ω 11k Ω
11k Ω11k Ω
Level
Sift
BTL
Driver
BTL
Driver
Level
Sift
RESET
Regulator
Level
Sift
BTL
Driver
Level
Sift
BTL
Driver
1
PRE-
DRIVE
INPUT LOGIC CIRCUIT
5
4
6
10
9
7
2
8
3
GND
IN1
OUT1P1
VCC2
OUT2 P2
VZ
VCC
IN2
Input Output Action
Brake
Normal(Reverse)Rotary
Reverse(Normal)Rotary
Brake
IN1
0
1
0
1
IN2
0
0
1
1
OUT1
0
1
0
0
OUT2
0
0
1
0
IC903 LC6541D (4 ch. Bridge CD Driver)
1
2
4
3
11
+
ñ
IN
Predriver Power
13
12
Predriver Power
Load short
protector
Overvoltage/
surge protector
Output pin-to-GND
short protector
Output pin-to-V
CC
short protector
Thermal
shutdown
Standby
SW
BIAS
circuit
Ripple
filter
Pop noise
prevention
circuit
V
CC
6
5
8
+
ñ
IN
Predriver Power
9
10
Predriver Power
Load short
protector
Power
GND2
Output pin-to-GND
short protector
Output pin-to-V
CC
short protector
7
14
IC301 LA4725 ( Power)