lb11947 Sanyo Semiconductor Corporation, lb11947 Datasheet - Page 5

• Manufacturer Part Number: lb11947
• Description: Pwm Current Control Type Dc Motor Driver + Switching Regulator
• Manufacturer: Sanyo Semiconductor Corporation

Pin functions description
Pin Assignment
Pin Name
OUTBB
VREFB
VREFA
OUTAB
MDINT
IPSEN
PWMB
PWMA
OUTA
OUTB
DCO
MDB
MDA
GND
VMA
VCC
VMB
CSS
TEO
OSC
CRB
CRA
PHB
PHA
VBB
EA
EB
ST
28
1
27
2
Pin No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
1
2
3
4
5
6
7
8
9
26
3
DC motor Ach, current sense resistor connection pin
DC motor, A output pin
DC motor, AB output pin
DC motor, B output pin
DC motor, BB output pin
DC motor Bch, current sense resistor connection pin
Switching regulator, control transistor output pin
Switching regulator, 5 V voltage output pin
Switching regulator, over-current detection resistor connection pin
Supply voltage connection pin
DC motor Bch, motor load current supply power connection pin
Switching regulator, soft start capacitor connection pin
Heat generation warning output, open collector pin
Switching regulator, switching frequency decesion capacitor connection pin
DC motor, standby input pin
DC motor Bch, noise cancel, TOFF time setting C and R connection pin
DC motor Bch, current setting reference voltage input pin
DC motor Ach, noise cancel, TOFF time setting C and R connection pin
DC motor Ach, current setting reference voltage input pin
DC motor Bch, current decay mode switching pin (for PWM = “L” only)
DC motor Bch, PWM input pin
DC motor Bch, phase switching input pin
DC motor, current decay mode switching pin (for PWM = “H” only)
DC motor Ach, current decay mode switching pin (for PWM = “L” only)
DC motor Ach, PWM input pin
DC motor Ach, phase switching input pin
GND connection pin
DC motor Ach, motor load current supply power connection pin
25
4
24
5
23
6
LB11947
LB11947
22
7
21
8
Functions
20
9
19
10
18
11
17
12
16
13
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