Panasonic AN8488SB Datasheet

ICs for Compact Disc/ CD-ROM Player

AN8488SB

3-phase full-wave motor driver and DC motor BTL driver IC

■ Overview

The AN8488SB is a motor driver IC incorporat­ing a 3-phase full-wave motor driver and DC motor
BTL driver IC with a reverse rotation brake/short
brake changeover function. It is encapsulated into a
high allowable power dissipation package (with cop­per block).

■ Features

• 3-phase full-wave and snubberless

• FG output

• Current limit

• Reverse rotation prevention

• Thermal protection circuit built-in

■ Applications

• Various types of optical disk drive

■ Block Diagram

SG

FIN1

changeover

Direction
detection

ER

Logic

EP = ER × EA

Absolute

value

Direction

VTL

H1+
H1−
H2+
H2−
H3+
H3−

VH

EC

ECR

16
17
18

19
20
21

23

27
26

Hall

amp.

matrix

Detection

Hall
bias

EA

Start/stop

(1.20)

Upper side

distribution

Lower side
distribution

Thermal

protection

circuit

18.4±0.2
(10.00)

0.80

(1.95)

(3.20)

0.35

Seating plane

42 34 30 22

1 9 13 21

HSOP042-P-0400C

VM1CSA1A2A3

32

35

36

34

29

Upper

Amp.

Amp.

side

power

Lower

side

power

Brake

circuit

FG

comparator

1
2

+0.10
– 0.05

(4.00)

9

VM2

Unit: mm

(1.315)

– 0.05

+0.10

0.30

8.3±0.2

10.93±0.30

VM2VNVP

7

4

0° to 10°

0.5±0.2

V

CC2

det

Reset

V

REF

det.

10

V

.

2.7±0.20.1±0.1

CC2

25

S/S

22

CC1

V

28

PCI

15

BRK

14121

FG

PG1

2

PG2

11

SLIN

5

PC

REF

V

1

AN8488SB ICs for Compact Disc/ CD-ROM Player

■ Pin Descriptions

Pin No. Symbol Description

1 PG1 SPD block power GND pin
2 PG2 Driver block power GND pin
3 N.C. N.C.
4 VN Driver block inverted output pin
5 PC Driver block power cut pin
6 N.C. N.C.
7 VP Driver block forward output pin
8 N.C. N.C.
9 VM2 Driver block motor power supply pin

10 V

Driver block supply voltage pin

CC2

11 SLIN Driver block input pin
12 V

Driver block reference input pin

REF

13 N.C. N.C.
14 FG FG signal output pin
15 BRK Brake mode setting pin
16 H1+ Hall element-1 positive input pin
17 H1− Hall element-1 negative input pin
18 H2+ Hall element-2 positive input pin

FIN1 SG Signal GND pin

Pin No. Symbol Description

19 H2− Hall element-2 negative input pin
20 H3+ Hall element-3 positive input pin
21 H3− Hall element-3 negative input pin
22 V

SPD block supply voltage pin

CC1

23 VH Hall bias pin
24 N.C. N.C.
25 SS Start/stop changeover pin
26 ECR Torque command reference input pin
27 EC Torque command input pin
28 PCI

Current feedback phase compensation pin
29 VM1 SPD block motor supply voltage pin
30 N.C. N.C.
31 N.C. N.C.
32 A3 A3 phase output pin
33 N.C. N.C.
34 CS Current det. pin
35 A2 A2 phase output pin
36 A1 A1 phase output pin

FIN2

■ Absolute Maximum Ratings

Parameter Symbol Rating Unit

Supply voltage V

4

Output voltage 1
Output voltage 2
Control signal input voltage

*

5

*

4

*

Supply current I

3

Output current

*

Hall bias current I

2

Power dissipation
Operating ambient temperature
Storage temperature

Note) Do not apply external currents or voltages to any pins not specifically mentioned.

For circuit currents, '+' denotes current flowing into the IC, and '−' denotes current flowing out of the IC.

1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C.

*

2: The power dissipation shown is the value of independent IC without a heat sink at Ta = 75°C. Refer to the PD  Ta curves

*

of the "■ Application Notes" for details.

*

1

*

1

*

CC1

V

CC2

VM1 , V

V

O1(n)

V

O2(n)

V

(n)

CC1

I

O(n)

HB

P

D

T

opr

T

stg

M2

7.0 V

14.0

− 0.3 to VM1 + 0.4 V

− 0.3 to VM2 + 0.4 V

0 to V

CC1

30 mA

±1 200 mA

50 mA

786 mW

−20 to +75 °C

−55 to +150 °C

V

2

ICs for Compact Disc/ CD-ROM Player AN8488SB

■ Absolute Maximum Ratings (continued)

Note)*3: n = 4, 7, 32, 35, 36

4: n = 32, 35, 36

*

5: n = 4, 7

*

6: n = 5, 11, 12, 15, 25, 26, 27

*

■ Recommended Operating Range

Parameter Symbol Range Unit

Supply voltage V

CC1

V

CC2

VM1 , V

■ Electrical Characteristics at Ta = 25°C

Parameter Symbol Conditions Min Typ Max Unit

Overall

Circuit current 1 I
Circuit current 2 I

Start/stop

Start voltage V

Stop voltage V

Medium voltage V

<Spindle block>
Hall bias

Hall bias voltage V

Hall amplifier

Input bias current I
In-phase input voltage range V
Minimum input level V

Torque command

In-phase input voltage range EC V
Offset voltage EC
Dead zone EC
Input current EC
Input/output gain A

Output

High-level output saturation voltage V
Low-level output saturation voltage V
Torque limit current I

CC1

CC2

START

STOP

MED

HB

BH

HBR

INH

OF

DZ

IN

CS

OH

OL

TL

M2

V

= 5 V, SS: at low  00.1mA

CC1

V

= 12 V, SS: at low  60 200 µA

CC2

Voltage with which a circuit operates 2.7  V
at V

= 5 V and L → H

CC1

Voltage with which a circuit becomes 0.7 V
off at V

= 5 V and H → L

CC1

Voltage with which V
low at V

V

CC1

V

CC1

V

CC1

V

CC1

CC1

V

CC1

V

CC1

V

CC1

V

CC1

V

CC1

V

CC1

= 5 V and EC = 0 V

CC1

= 5 V, IHB = 20 mA 0.7 1.2 1.6 V

= 5 V  15µA
= 5 V 1.5  4.0 V
= 5 V 60 mV[p-p]

= 5 V 0.5  3.9 V
= 5 V −100 0 100 mV
= 5 V 25 75 125 mV
= 5 V, EC = ECR = 1.65 V −5 − 0.25 µA
= 5 V, RCS = 0.6 Ω 0.75 1.0 1.25 A/V

= 5 V, IO = −300 mA  0.9 1.6 V
= 5 V, IO = 300 mA  0.2 0.6 V

VCC = 5 V, RCS = 0.6 Ω 400 500 600 mA

4.25 to 5.5 V

4.5 to 13.5

becomes 1.425 1.65 1.89 V

PC1

3