Datasheet AN8730SB Datasheet (Panasonic)

ICs for Compact Disc/CD-ROM Player

AN8730SB

4-channel driver IC for optical disk

■ Overview

The AN8730SB is a 4-channel driver IC, which can
operate in a low voltage, employing the low power con­sumption type H-bridge system with a switching regula­tor. It is especially suited for a portable CD/MD player.

■ Features

• Low power consumption due to PWM control of power

supply

• Wide output D-range independent of the reference volt-

age of the system

• Enable to set input/output gain by an external resistor

• Independent power on/off for 2 channels and simulta-

neous on/off for other 2 channels as well

• Battery voltage detection circuit built-in

• Thermal shut-down circuit (with hysteresis) built-in

■ Applications

• Portable CD/MD

14

0.1±0.1

(0.4)

1

28

15

+0.1

7.2±0.3

9.3±0.3

SSOP028 P-0375A

–0.05

0.2

Unit: mm

0.3±0.1

0.8

0.9±0.1 0.9±0.1

2.05±0.2

11.6±0.3

1

AN8730SB ICs for Compact Disc/CD-ROM Player

■ Block Diagram

STNBY

12

SGND

PGND

8

21

25

24

23

22

19

20

BTL

BTL

BTL

Power

cut

Absolute

value

Absolute

value

Absolute

value

Thermal

shut-down

V

REF

detection

3

TRVSTOP

4

INTV

6

5

INSP

10

LDON

9

INFO

PC

17

BTL

18

V

TB

CT

Absolute

value

27

C

PWM

26

7

Triangular

Maximum

value

wave

2

28

CLK

PWMG

1

CC

PV

13

CC

SV

11

14

15

16

INTR

V

REF

V

SEN

EMP

2

ICs for Compact Disc/CD-ROM Player AN8730SB

■ Pin Descriptions

Pin No. Symbol Description

1PVCCSupply voltage pin
2 CLK External sync. input pin
3 TRVSTOP Driver on-off control pin
4 INTV Driver input pin
5 INSP Driver input pin
6 PC Driver on-off control pin
7 CT Triangular wave oscillation pin
8 SGND Ground pin

9 INFO Driver input pin
10 LDON Driver on-off control pin
11 INTR Driver input pin
12 STNBY Standby mode input pin
13 SV
14 V

Supply voltage pin

CC

V

REF

input pin

REF

Pin No. Symbol Description

15 V

Empty detection input pin

SEN

16 EMP Empty detection output pin
17 TR− Driver output pin
18 TR+ Driver output pin
19 FO− Driver output pin
20 FO+ Driver output pin
21 PGND Ground pin
22 SP+ Driver output pin
23 SP− Driver output pin
24 TV+ Driver output pin
25 TV− Driver output pin
26 TB PWM circuit output pin
27 V

Drive supply voltage pin

C

28 PWMG PWM loop gain adjustment pin

■ Absolute Maximum Ratings

Parameter Symbol Rating Unit

Supply voltage PV

Supply voltage range PV

Supply current I
Supply current 1 I
Supply current 2 I
Drive output current I

2

Power dissipation
Max. application voltage to V
Operating ambient temperature
Storage temperature

Note) 1. 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. *
2: Ta = 75°C. For the independent IC without a heat sink. Refer to "■ Application Note" at mounting on PCB.

*

*

pin V

SEN

1

*

1

*

SV

V

SV

SVCC

PVCC

P

10max

T
T

CC

CC

C

CC

CC

CC

O

D

opr

stg

15 V

6
9

− 0.3 to +15.0 V

− 0.3 to +6.0
 mA

50 mA

100 mA
500 mA
345 mW

15.0 V

−25 to +75 °C

−55 to +125 °C

■ Recommended Operating Range

Parameter Symbol Range Unit

Supply voltage PV

SV

CC

CC

2.7 to 14.0 V

2.7 to 5.5

3

AN8730SB ICs for Compact Disc/CD-ROM Player

■ Recommended Operating Range

Parameter Symbol Range Unit

Supply voltage PV

SV

CC

CC

■ Electrical Characteristics at SVCC = PVCC = 5 V, Ta = 25°C

Parameter Symbol Conditions Min Typ Max Unit

<Common block>

Supply current of SVCC at no load I
In standby mode I

supply current of SVCC at no load STNBY = 0 V
Supply current of PVCC at no load I
VC leak current I
Free-run oscillation frequency f

at CT pin

CKL pin block

CLK pin input threshold V
CLK pin input threshold V

THH

THL

V
V

Empty detection block

EMP pin detection voltage V
Hysteresis width from EMP pin V

empty detection to recovery
EMP pin output voltage V
V

pin input resistance R

SEN

<Driver block>
Focus

Transfer gain '+'GF+ V
'+' / '−' transfer gain relative ratio G+/G− V
Dead zone converted to INFO pin input

IDZFO V
INFO pin input internal resistance R
Output offset voltage V

Max. output amplitude '+'V
Max. output amplitude '−'V
LDON pin high-level threshold V
LDON pin low-level threshold V

pin driver on-off V

V

REF

FOOFFVREF

(OFF)

FOLM+

FOLM−

10THHVREF

10THLVREF

14THH

high-level threshold
V

pin driver on-off V

REF

14THL

low-level threshold

PVCC = SVCC = 5 V, V

13Q

PVCC = SVCC = 5 V, V

13S

PVCC = SVCC = 5 V, V

1Q

VC = 9 V 10 µA

VCL

CT = 150 pF, 470 kΩ165 kHz

3F

2THHfIN

2THLfIN

16TH1

16H

16OIEMP

15

9

= 88.2 kHz 2.0  V
= 88.2 kHz 0.8 V

= +1.0 mA, V

= 1.5 V 11.3 13.8 16.3 dB

REF

= 1.5 V −1.5 0 +1.5 dB

REF

= 1.5 V −10 0 +10 mV

REF

V

= 1.5 V, LDON = 3.0 V 0.8 1.0 1.2 kΩ

REF

= INFO = 1.6 V −50 +50 mV

PVCC = SVCC = 5 V, V
PVCC = SVCC = 5 V, V

= 1.6 V, INFO = 1.8 V 2.0  V
= 1.6 V, INFO = 1.8 V 1.0 V

INFO = 1.8 V 1.25  V

INFO = 1.8 V 0.75 V

2.7 to 14.0 V

2.7 to 5.5

= 1.5 V  4.2 7.0 mA

REF

= 1.5 V  0.8 2 mA

REF

= 1.5 V  3.4 5.5 mA

REF

1.7 1.85 1.9 V
50 80 110 mV

= 1 V 0.5 V

SEN

21.5 25 28.5 kΩ

= 1.5 V 2.5 3.4  V

REF

= 1.5 V 2.5 3.4  V

REF

4

ICs for Compact Disc/CD-ROM Player AN8730SB

■ Electrical Characteristics at SVCC = PVCC = 5 V, Ta = 25°C (continued)

Parameter Symbol Conditions Min Typ Max Unit

<Driver block> (continued)
Tracking

Transfer gain '+' GTR+ 11.3 13.8 16.3 dB
'+' / '−' transfer gain relative ratio G+/G−−1.5 0 +1.5 dB
Dead zone converted to INTR pin input
INTR pin input internal resistance R
Output offset voltage V

Max. output amplitude '+'V
Max. output amplitude '−'V

Spindle

Transfer gain '+' GSP+ 17.5 20.0 22.5 dB
'+' / '−' transfer gain relative ratio G+/G−−1.7 −0.2 +1.3 dB
Dead zone converted to INSP pin input
INSP pin input internal resistance R
Output offset voltage V

Max. output amplitude '+'V
Max. output amplitude '−'V
PC pin threshold high-level V
PC pin threshold low-level V

Traverse

Transfer gain '+' GTV+ 11.3 13.8 16.3 dB
'+' / '−' transfer gain relative ratio G+/G−−1.8 −0.3 +1.2 dB
Dead zone converted to INTV pin input
INTV pin input internal resistance R
Output offset voltage V

Max. output amplitude '+'V
Max. output amplitude '−'V
TRVSTOP pin threshold high-level V
TRVSTOP pin threshold low-level V

PWM-comp.

TB pin sink current ability I
VC level shift V

IDZTR −10 0 +10 mV

11

TROFF

(OUT)

TRLM+

TRLM−

0.8 1.0 1.2 kΩ

−50 0 +50 mV

2.5 3.4  V

2.5 3.4  V

IDZSP −10 0 +10 mV

5

SPOFF

(OUT)

SPLM+

SPLM−

6THH

6THL

0.8 1.0 1.2 kΩ

−100 0 +100 mV

2.5 3.4  V

2.5 3.4  V

2.0  V
1.0 V

IDZTV −10 0 +10 mV

4

TVOFF

(OUT)

TVLM+

TVLM−

6THH

3THL

TB

C

V

= 1.6 V, INFO = 2.1 V 9 12 15 mA

REF

V

= 1.6 V, INFO = 1.8 V 0.32 0.52 0.62 V

REF

0.8 1.0 1.2 kΩ

−50 0 +50 mV

2.5 3.4  V

2.5 3.4  V

2.0  V
1.0 V

5

AN8730SB ICs for Compact Disc/CD-ROM Player

■ Electrical Characteristics at SVCC = PVCC = 5 V, Ta = 25°C (continued)

• Design reference data

Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.

Parameter Symbol Conditions Min Typ Max Unit

Temperature protection circuit

Thermal shut-down operating temperature TON  150 °C
driver operation → stop

Thermal shut-down operating temperature DT  30 °C
hysteresis width

■ Application Note

• PD  Ta curves of SSOP028-P-0375A

P

 T

D

a

1 600

1 400
1 282

1 200

(mW)

1 000

D

Power dissipation P

800
690
600

Independent IC
without a heat sink

400

R
P

200

0

0

Mounted on standard board
(glass epoxy: 50 × 50 × t0.8 mm

= 78°C/ W

R

th(j-a)

P

= 1 282 mW (25°C)

D

= 145°C/ W

th(j-a)

= 690 mW (25°C)

D

25 50 75 100 125 150

Ambient temperature Ta (°C)

3

)

6

ICs for Compact Disc/CD-ROM Player AN8730SB

■ Application Circuit Example

STNBY

12

SGND

TV

SP

PGND

8

Power

cut

21

25

BTL

24

Absolute

value

23

BTL

22

Absolute

value

Thermal

shut-down

detection

V

REF

TRVSTOP

3

INTV

4

PC

6

INSP

5

FO

TR

V

TB

CT

19

LDON

BTL

10

20

Absolute

value

9

INFO

17

BTL

18

Absolute

value

27

C

Maximum

value

26

7

PWM

Triangular

wave

2

28

PWMG

1

CC

PV

13

CC

SV

11

14

15

16

INTR

V

REF

V

SEN

EMP

CLK

7