lb1877v Sanyo Semiconductor Corporation, lb1877v Datasheet - Page 3

• Manufacturer Part Number: lb1877v
• Description: Brushless Motor Driver With Speed Control For Portable Cassette Recorders
• Manufacturer: Sanyo Semiconductor Corporation

Pin Description
Pin Assignment
Pin number Pin name
20
18
11
19
12
14
13
15
10
16
17
1
2
6
5
4
7
8
3
9
P – GND
WOUT
UOUT
VOUT
VREF
COM
OSC
GND
VCC
VSP
OUT
WB
S/S
IN+
DR
UB
VB
FC
LB
RI
U-phase output
V-phase output
W-phase output
U-phase base of 3-phase differential
V-phase base of 3-phase differential
W-phase base of 3-phase differential
Power supply
Startup oscillator pin
Output waveform detection comparator voltage
Output transistor and predriver ground
Ground pin
Start/stop pin
Forward/reverse pin
Reference voltage 0.9V
Output waveform peak detection pin
Error amp non-inverted pin
Error amp output pin
Current feedback resistor connection pin
Frequency response adjustment pin
Motor start lockup prevention. Connect to GND via capacitor
WOUT
VOUT
PGND
COM
GND
OSC
WB
VB
UB
RI
10
1
2
3
4
5
6
7
8
9
LB1877V
LB1877V
Function
Top view
20
19
18
17
16
15
14
13
12
11
DR
VCC
LB
FC
OUT
VSP
IN+
VREF
S/S
UOUT
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