Panasonic AN8470NSA Datasheet

ICs for Compact Disc/CD-ROM Player

AN8470NSA

Spindle motor driver IC for optical disk

■ Overview

The AN8470NSA is a high performance IC
suited for driving a spindle motor of an optical disk
such as CD-ROM, PD, DVD, CD-R, CD-RW, etc.

■ Features

• Low power consumption due to a direct PWM

system

• With start and stop pin

• Reverse breaking by EC/ECR voltage

• With Hall bias pin

• Surface-mount small package

■ Applications

• High speed CD-ROM drive

PD, DVD, CD-R, CD-RW drives

■ Block Diagram

Start

FG

7

24

DD

V

9

Start/stop

BC411BC3

Step-up voltage circuit

OSC

12

11.0±0.3

32

116

0.65

VPUMP15VM1

13

BC2

(0.625)

BC1

14

17

6.1±0.3

0.65±0.100.65±0.10

+0.10

0.3

–0.05

Seating plane

SSOP032-P-0300

6

8.1±0.3

1.5±0.2

0.1±0.1

Thermal

protection

Unit: mm

+0.10

0.2

–0.05

(0.5)

H1H
H1L
H2H
H2L
H3H
H3L

VH

EC

ECR

FC

23
22
21
19
18
17

8

27

26

25

Hall amp.

matrix

Hall
bias

V

Oscillator

32

VM2

Amp.

Distributor

circuit

Amp.

PWMOUT

T

FF

PNFOUT

Output

circuit

× 5

31

30

10

3
1

2

A1
A2
A3

RNF2

RNF1

GND

SRESET

V

CL

SSET

1

AN8470NSA ICs for Compact Disc/CD-ROM Player

■ Pin Descriptions

Pin No. Symbol Description

1 A2 Drive output 2
2 RNF2 Current det. pin 2
3 A1 Drive output 1
4 N.C. N.C.
5 N.C. N.C.
6 VM1 Motor supply voltage pin 1
7 Start Start/stop changeover pin
8 VH Hall bias pin

9VDDSupply voltage pin
10 GND Ground pin
11 BC4 Booster capacitor connection pin 4
12 BC3 Booster capacitor connection pin 3
13 BC2 Booster capacitor connection pin 2
14 BC1 Booster capacitor connection pin 1
15 VPUMP Booster pin
16 N.C. N.C.

Pin No. Symbol Description

17 H3L Hall element-3 negative input pin
18 H3H Hall element-3 positive input pin
19 H2L Hall element-2 negative input pin
20 N.C. N.C.
21 H2H Hall element-2 positive input pin
22 H1L Hall element-1 negative input pin
23 H1H Hall element-1 positive input pin
24 FG FG signal output pin
25 FC Oscillator pin
26 ECR Torque command reference input pin
27 EC Torque command input pin
28 N.C. N.C.
29 N.C. N.C.
30 RNF1 Current det. pin 1
31 A3 Drive output 3
32 VM2 Motor supply voltage pin 2

■ Absolute Maximum Ratings

Parameter Symbol Rating Unit

2

Supply voltage

Drive output voltage
Control signal input voltage
Supply current I
Drive output current
Hall bias current I
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 voltage in the step-up voltage circuit exceeds the supply voltage.

*

3: For 70°C and IC alone.

*

4: o = 1, 2, 3, 6, 30, 31, 32

*

5: m = 1, 3, 31

*

6: n = 7, 17, 18, 19, 21, 22, 23, 26, 27

*

*

5

*

6

*

4

*

3

*

1

*

1

*

For the allowable value of the step-up voltage, refer to "■ Electrical Characteristics".

V

DD

V

M1

V

M2

V

(m)

V

(n)

DD

I

(o)

HB

P

D

T

opr

T

stg

6.0 V

15.0 V

0 to V

DD

30.0 mA

±1 200 mA

30.0 mA
293 mW

−20 to +70 °C

−55 to +150 °C

V

2

ICs for Compact Disc/CD-ROM Player AN8470NSA

■ Recommended Operating Range

Parameter Symbol Range Unit

Supply voltage V

DD

V

M1

V

M2

■ 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

START

Stop voltage V

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 VDD = 5 V 0.5  3.9 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

OSC

Charging current I
Upper threshold voltage V
Lower threshold voltage V

VDD = 5 V in power save mode  00.1mA

DD1

VDD = 5 V  914mA

DD2

Voltage with which a circuit operates 2.7  V
at VDD = 5 V and L → H

Voltage with which a circuit becomes 0.7 V

STOP

off at VDD = 5 V and H → L

VDD = 5 V, IHB = 20 mA 0.7 1.1 1.6 V

HB

VDD = 5 V  15µA

BH

VDD = 5 V, except for H2H, H2L 1.5  4.0 V

HBR

VDD = 5 V 60 mV[p-p]

INH

VDD = 5 V −100 0 100 mV

OF

VDD = 5 V 0 75 150 mV

DZ

VDD = 5 V, EC = ECR = 2.5 V −5 −1 µA

IN

VDD = 5 V, RCS = 0.33 Ω 0.36 0.48 0.60 A/V

CS

VDD = 5 V, IO = −500 mA  0.25 0.50 V

OH

VDD = 5 V, IO = 500 mA  0.25 0.50 V

OL

VDD = 5 V, RCS = 0.33 Ω 455 570 685 mA

TL

VDD = 5 V −65 −50 −35 µA

CH

VDD = 5 V 1.75 2.50 3.25 V

CH

VDD = 5 V 0.35 0.50 0.65 V

CL

4.5 to 5.5 V

3