LB11921T データシートの表示（PDF） - SANYO -> Panasonic

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LB11921T

Monolithic Digital IC Three-Phase Brushless Motor Driver

SANYO -> Panasonic 

LB11921T

Continued from preceding page.

Pin No.

Symbol

Pin Description

21

RF GND Output current detection reference

Connect to GND of the external resistor Rf.

VCC

Equivalent Circuit

21

22

RF

Output current detection

Connect a low resistance resistor Rf between this

VCC

pin and Rf GMD pin.

This resistor sets the maximum output current

IOUT to be 0.26/Rf.

22

23

GND

GND pin

24

UL

Outputs (that are used to drive external

25

UH

transistors).

26

VL

Duty cycle is controlled on the UH, VH, and WH

27

VH

side of these output.

28

WL

29

WH

VCC

30

VCC

Power supply

Connect a capacitor between this pin and ground

for stabilization.

31

IN3-

Hall-effect device inputs.

32

IN3+

The input is seen as a high-level input when IN+

VCC

33

IN2-

> IN-, and as a low-level input for the opposite

34

IN2+

state.

35

IN1-

If noise on the Hall-effect device signals is a

36

IN1+

problem, insert capacitors between the

corresponding IN+ and IN- inputs.

500Ω

32 34 36

24 26 28

25 27 29

500Ω

31 33 35

No.A0604-11/18

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