LB11999H datasheet(11/12 Pages) SANYO

Il numero della parte	LB11999H

Spiegazioni elettronici	Three-Phase Brushless Motor Drivers for CD-ROM Spindle Motor Driver (supports 44x, 48x, 50x)

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Produttore elettronici	SANYO [Sanyo Semicon Device]

Homepage	https://www.sanyo-av.com/us/

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11 / 12 page

LB11999,11999H

No. 6180-11/12

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

LMC

BRAKE

18 (8)

20 (6)

21 (5)

22 (4)

23 (2)

24 (1)

1 (28)

2 (27)

5 (23)

19 (7)

16 (12)

1.3V to 2V

20

20k

5k

2k

VCC1

(6)

51k

21

200

25

µ

25

µ

VCC1

15

µ

15

200

µ

22

(4)

(5)

5

3.9

VCC2

1

23

2

24

(23)

(1)

(2, 28, 27)

VCC1

5k

RF

7k

15k

19

(7)

100

µ

VCC1

50k

75k

16

(12)

Unit (Resistance:

Ω, capacitance: F)

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