LB1821 View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LB1821

Power Brushless Motor Pre-Driver IC for OA Equipment

SANYO -> Panasonic 

Continued from preceding page.

Pin No.

Pin

LB1821M

Functions

19

IN1+

Hall inputs

20

IN1–

High is defined as IN+ > IN–, and low as the opposite.

21

IN2+

An amplitude of 100 mV p-p (differential) or more is

22

IN2–

desirable in the Hall signals. Connect capacitors between

23

IN3+

the IN+ and IN– pins if noise on the Hall signals causes

24

IN3–

problems.

Equivalent circuit

Output current detection

Connect a resistor between this pin and ground.

25

RF

The output limitation maximum current, IOUT, is set to be

0.52/Rf by this resistor.

26

28

30

UL

VL

WL

This IC implements duty control using output signal PWM.

These are open collector sink outputs.

27

UH

29

VH

Outputs (Fixed current source outputs)

31

WH

Power-supply voltage

32

VCC

Connect a capacitor between this pin and ground for power

supply stabilization.

Continued on next page.

No. 5686-14/16

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