LB1895D datasheet(7/12 Pages) SANYO

Part #	LB1895D

Description	3-Phase Brushless Motor Driver for CD-ROM Spindle Motors

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Manufacturer	SANYO [Sanyo Semicon Device]

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

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Pin Descriptions

Note: Numbers within (

) are for LB1895D

Pin No.

Symbol

Voltage

Equivalent circuit

Description

4VCC2

4 V to 13.6 V

Supply pin that provides pre-drive

voltage for the source side.

6 (5)

VCC3

2 V to 13.6 V

Supply pin that provides voltage

for the constant current control

amplifier.

8 (10)

VCC1

4 Vto6 V

Supply pin that provides voltage

for all circuits except the output

transistor, source-side pre-drive,

and constant current control

amplifier.

9(11)

VCOMPO

9 10

VCC1

10k

Ω

150µA

(11, 12)

A06717

V-phase Hall element waveform

Schmitt comparator output pin.

10 (12)

WCOMPO

W-phase Hall element waveform

Schmitt comparator output pin.

12 (13)

UIN1

1.2 V to

VCC1–1 V

12

VCC1

200

Ω

200

Ω

25µA

(13)

A06718

13

(14)

U-phase Hall element input pin.

Logic HIGH is represented by

UIN1>UIN2.

13 (14)

UIN2

14 (15)

VIN1

1.2 V to

VCC1–1 V

VCC1

200

Ω

200

Ω

25µA

A06719

17

15

(16)

16

14

(15)

(17)

(18)

V-phase Hall element input pin,

and V-phase Schmitt comparator

input pin for reverse detection.

Logic HIGH is represented by

VIN1>VIN2.

15 (16)

VIN2

16 (17)

WIN1

W-phase Hall element input pin,

and W-phase Schmitt comparator

input pin for reverse detection.

Logic HIGH is represented by

WIN1>WIN2.

17 (18)

WIN2

18 (19)

VH

VCC1

30k

Ω

2k

Ω

75µA

A06720

18

(19)

This pin provides the lower bias

voltage for the Hall element.

Continued on next page.

LB1895, 1895D

No.5634-7/12

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