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LB11996 Datasheet(PDF) 9 Page - Sanyo Semicon Device

Part # LB11996
Description  Three-Phase Brushless Motor Driver for CD-ROM Spindle Motor Driver
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Manufacturer  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LB11996 Datasheet(HTML) 9 Page - Sanyo Semicon Device

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LB11996,11996H
No. 6181-9/10
Continued from preceding page
Control reference voltage applied pin.
Determines control start voltage.
Speed control voltage applied pin.
V type control technique
VC > VCREF : Forward
VC < VCREF : Slowdown
(Reverse-blocking circuit prevents
reverse rotation.)
W-phase output.
Output transistor GND.
V-phase output.
Upper side output NPN transistor
collector pin (common for all 3
phases).
For current detection, connect
resistor between VCC3 pin and RF
pin. Constant current control and
current limiter works by detecting this
voltage.
Short brake pin.
BRAKE:
High –> Brake
Low/Open –> Drive
U-phase output.
VCREF
VC
WOUT
VOUT
UOUT
0V to VCC1
GND pin for all circuits except output.
Control loop frequency compensator
pin.
Connecting a capacitor between this
pin and GND prevents closed loop
oscillation in current limiting circuitry.
Pin number
Pin name
Pin voltage
Equivalent circuit
Pin function
SIG GND
FC
PWR GND
RF
FGSEL
BRAKE
18
(8)
20
(6)
21
(5)
22
(4)
23 (2)
24 (1)
1 (28)
2 (27)
5
(23)
19
(7)
16
(12)
0V to 3.5V
Unit (resistance:
Ω)
3 Hall FG/1 Hall FG select pin.
FGSEL:
High –> 3 Hall FG
Low/Open –> 1 Hall FG
( 6 )
20
20k
5k
2k
VCC1
51k
21
200
25
200
µA
25
µA
VCC1
15
µA
15
µA
22
( 4 )
( 5 )
5
3.9
3.9
VCC2
1
23
2
24
( 23 )
(2 28 27)
•
•
( 1 )
VCC1
50k
75k
19
( 7 )
100
µA
VCC1
50k
75k
16
( 12 )


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