LB11999H Sanyo, LB11999H Datasheet - Page 11

• Manufacturer Part Number: LB11999H
• Description: Three-Phase Brushless Motor Drivers for CD-ROM Spindle Motor Driver (supports 44x / 48x / 50x)
• Manufacturer: Sanyo

Continued from preceding page
Pin number
16 (12)
18 (8)
22 (4)
24 (1)
19 (7)
20 (6)
21 (5)
23 (2)
5 (23)
1 (28)
2 (27)
PWR GND
Pin name
SIG GND
BRAKE
VCREF
WOUT
VOUT
UOUT
LMC
VC
FC
RF
0V to VCC1
Pin voltage
1.3V to 2V
VCC1
(4)
22
200
15
100
LB11999,11999H
3.9
3.9
25
(6)
20
Equivalent circuit
51k
50k
75k
25
15k
20k
(2, 28, 27)
23
24
5
7k
5k
15
(23)
2k
VCC1
(1)
1
(12)
VCC2
200
16
VCC1
5k
RF
2
(5)
21
VCC1
(7)
19
GND pin for all circuits except output.
Control loop frequency compensator
pin.
Control reference voltage applied
pin.
Determines control start voltage.
W-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.
Connecting a capacitor between this
pin and GND prevents closed loop
oscillation in current limiting circuitry.
Speed control voltage applied pin.
V type control technique
VC > VCREF : Forward
VC < VCREF : Slowdown
(Reverse-blocking circuit prevents
reverse rotation.)
Output transistor GND.
V-phase output.
U-phase output.
Short brake pin.
BRAKE:
High –> Brake
Low/Open –> Drive
Unit (Resistance: , capacitance: F)
Pin function
No. 6180-11/12