No. 5798-4/5

LB1855NM

Continued from preceding page.

Pin No.

Pin

Pin voltage (V)

Pin description

Equivalent circuit

7

AGC

• AGC pin

The Hall amplifier gain can be controlled according to the

amplitude of the Hall input by inserting a capacitor between this

pin and ground.

8

• Internal reference voltage. About 6.3 V.

9

10

11

12

13

14

2.2 to

• Hall element inputs pin

15

16

0 to 5

• Speed control pin

This IC adopts a current control type in which the output current

is controlled by the pin 16 voltage. The control start voltage

changes about 1.3 to 1.4 V if pin 15 is connected to ground.