LB11985H データシートの表示（PDF） - SANYO -> Panasonic

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LB11985H

VCR Capstan Motor Brushless Motor Driver

SANYO -> Panasonic 

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Pin No. Symbol Pin Voltage

LB11985H

Description

Unit (resistance : Ω, current : A )

Equivalent circuit

VCC

Frequency characteristics correction.

Oscillation in the current control system closed loop

22

FC

can be prevented by inserting a capacitor between

this pin and ground.

22

Control reference voltage.

23

CTLREF

1 V to 4 V Although this voltage is set to VCC × (15/35)

(VCC = 5 V) internally, it can be modified by applying a voltage

from a low-impedance circuit.

Speed control.

25

CTL

0 V to VCC

Control consists of a constant current drive scheme

implemented by applying current feedback from

RF.

6S

A13022

VCC

300 Ω

300 Ω

23

18 kΩ

25

50 µA 50 µA

VCC

A13023

Current limiter function control.

24

LIM

0 V to VCC The voltage applied to this pin modifies the output

current linearly.

1 kΩ

24

26

Forward/reverse control.

26

FR

0 V to VCC The voltage applied to this pin selects forward or

reverse operation.

45 kΩ

A13024

VCC

27

ADJ

External torque ripple correction ratio adjustment.

To adjust the correction ratio, apply the stipulated

voltage to the ADJ pin from a low-impedance

external circuit.

If the applied voltage is increased, the correction

ratio rises, and if the applied voltage is lowered, the

correction ratio falls.

6 kΩ 500 Ω 6 kΩ

Power supply for all circuits other than the IC

28

VCC

4.5 V to 5.5 V

internal output block.

This voltage must be stabilized so that ripple and

noise do not enter the IC.

A13025

VCC

27

A13026

No. 6209-8/9

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