lb11995h Sanyo Semiconductor Corporation, lb11995h Datasheet - Page 9

• Manufacturer Part Number: lb11995h
• Description: Three-phase Brushless Motor Driver For Cd-rom Spindle Drive
• Manufacturer: Sanyo Semiconductor Corporation

Continued from preceding page
Pin number
28
27
23
12
5
4
2
1
7
Pin name
PWR GND
V
W
V
U
BRAKE
L M C
CREF
V
OUT
OUT
R F
OUT
C
0V to V
0V to V
Pin voltage
–1.5V
CC
CC
1
1
4
200
15 A
V CC 1
100 A
25 A
3.9
3.9
LB11995H
Equivalent circuit
51k
50k
75k
15k
25 A
23
27 28 2
5k
7k
V CC 1
1
12
15 A
200
V CC 2
RF
7
A12359
V CC 1
A12360
A12361
A12362
5
Control reference voltage supply
pin. Determines control start
voltage.
Speed control voltage supply pin
V type control technique
V
V
(Reverse-blocking circuit
prevents reverse rotation.)
W phase output
Output transistor GND
V phase output
U phase output
Upper side output NPN transistor
collector pin (common for all 3
phases). For current detection,
connect resistor between V
pin and RF pin. Constant current
control and current limiter works
by detecting this voltage.
When this pin is connected to GND,
the limiter setting current is
increased by a factor of 1.5.
Short brake pin
BRAKE:
High –> Short brake operation
Low/Open –> Motor drive operation
C
C
> V
< V
CREF
CREF
Pin function
: Forward
: Slowdown
No. 6116-9/10
CC
3