LB1821 datasheet(14/16 Pages) SANYO

Part #	LB1821

Description	Power Brushless Motor Pre-Driver IC for OA Equipment

PDF	16 Pages

Scroll/Zoom	100%

Manufacturer	SANYO [Sanyo Semicon Device]

Direct Link	https://www.sanyo-av.com/us/

Logo

14 / 16 page

No. 5686-14/16

LB1821M

Continued from preceding page.

Pin No.

Functions

Equivalent circuit

IN1+

IN1–

IN2+

IN2–

IN3+

IN3–

Hall inputs

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

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

desirable in the Hall signals. Connect capacitors between

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

problems.

Output current detection

Connect a resistor between this pin and ground.

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

0.52/Rf by this resistor.

This IC implements duty control using output signal PWM.

These are open collector sink outputs.

Outputs (Fixed current source outputs)

VCC

Power-supply voltage

Connect a capacitor between this pin and ground for power

supply stabilization.

Continued on next page.

LB1821 Datasheet(PDF) 14 Page - Sanyo Semicon Device