Datasheet AM5668 Datasheet (ON Semiconductor)

Data Sheet

5-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5668

General Description

The AM5668 is a five-channel BTL driver IC, in
which four channels are voltage-type BTL drivers for
tracking and focus actuators, sled and spindle motors,
the other one channel is DC motor driver for tray
which supports forward/reverse control. This IC also
contains two general-purpose independent precise
voltage comparators.

The AM5668 is available in standard HSOP-28 pack­age.

Features

· 4-Channel DC Motor BTL Driver

· 1-Channel Forward/Reverse Control DC Motor

BTL Driver

· Two Bui lt-in Com parators

· Built-in Level Shift Circuit

· Built-in Mute Mode

· Built-in Thermal Shutdown Circuit

· Operating Voltage: 4.3V to 13.2V

Application

· DVD Player Driver

Sep. 2005 Rev. 1. 2

HSOP-28

Figure 1. Package Type of AM5668

BCD Semiconductor Manufacturing Limited

1

Data Sheet

5-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5668

Pin Configuration

M Package
(HSOP-28)

VINFC

OP2IN­OP2IN+

VINSL

OP2OUT OP1IN-

FWD

REV

(PGND)

V

CC1

VOTR-

VOTR+

1
2

3
4
5

6
7

8
9

10

28
27
26
25
24
23

22

21
20
19

MUTE

BIAS

VINTK

OP1IN+

VINSP

GND

(PGND)

VCTL

OP1OUT

V

CC2

Sep. 2005 Rev. 1. 2

VOSL+

VOSL-

VOFC-

VOFC+

11
12
13
14

Figure 2. Pin Configuration of AM5668 (Top View)

18

17
16

15

BCD Semiconductor Manufacturing Limited

2

VOSP-

VOSP+

VOTK-

VOTK+

Data Sheet

5-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5668

Pin Description (Note 1)

Pin Number Pin Name Function

1 VINFC Input for focus driver
2 OP2IN- Comparator 2 input (-)
3 OP2IN+ Comparator 2 input (+)
4 VINSL Input for the sled driver
5 OP2OUT Comparator 2 output
6 FWD Tray driver forward input
7 REV Tray driver reverse input
8V

9 VOTR- Tray driver output (-)
10 VOTR+ Tray driver output (+)
11 VOSL+ Sled driver output (+)
12 VOSL- Sled driver output (-)
13 VOFC- Focus driver output (-)
14 VOFC+ Focus driver output (+)
15 VOTK+ Tracking driver output (+)
16 VOTK- Tracking driver output (-)
17 VOSP+ Spindle driver output (+)
18 VOSP- Spindle driver output (-)
19 V

20
21 VCTL Speed control input of tray driver
22 GND Ground
23 VINSP Input for spindle driver
24 OP1IN­25 OP1IN+
26 VINTK Input for tracking driver
27 BIAS Input for reference voltage
28 MUTE Input for mute control

CC1

CC2

OP1OUT

VCC for pre-driver block and power block of sled and tray

VCC for power block of spindle, tracking and focus

Comparator 1 output

Comparator 1 input (-)
Comparator 1 input (+)

Note 1: Symbols of + and - (output of drivers) mean polarity with respect to input pin.
(For example, if voltage of pin 1 is high, pin 14 is high and pin 13 is low. )

Sep. 2005 Rev. 1. 2

BCD Semiconductor Manufacturing Limited

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Data Sheet

5-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5668

Functional Block Diagram

VINFC

OP2IN-

OP2IN+

VINSL

OP2OUT

FWD

REV

V

CC1

VOTR-

VOTR+

VOSL+

VOSL-

1

2

3

4

5

6

7

8

10

11

12

THERMAL

SHUT DOWN

17K

42.5K

MUTE

28

MUTE

27

BIAS

26

42.5k 17k

VINTK

25

OP1IN+

24

OP1IN-

17K

23

VINSP

22

GND

42.5K

PGND

V

CC1

Pre-DRV

17K

9

PGND

21

VCTL

20

OP1OUT

TRAY

DRIVER

25.5K

19

V

CC2

V

CC2

18

SLED

DRIVER

(4X)

SPINDLE

DRIVER

(4X)

17

VOSP-

VOSP+

VOFC-

13

14 15

VOFC+

Sep. 2005 Rev. 1. 2

ACTUATOR

DRIVER

(6X)

V

V

CC1

CC2

V

ACTUATOR

DRIVER

(6X)

CC2

Figure 3. Functional Block Diagram of AM5668

BCD Semiconductor Manufacturing Limited

4

16

VOTK-

VOTK+

Data Sheet

5-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5668

Ordering Information

AM5668

Circuit Type

-

E1: Lead Free
Blank: Tin Lead

Package
M28: HSOP-28

Package

HSOP-28

BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.

Temperature

Range

0 to 70 ℃

Tin Lead Lead Free Tin Lead Lead Free

AM5668M28 AM5668M28-E1 AM5668M28 AM5668M28-E1 Tube

Part Number Marking ID

Absolute Maximum Ratings (TA=25oC) (Note 2)

Parameter Symbol Value Unit

Supply Voltage
Power Dissipation
Storage Temperature
ESD (Human Body Model) ESD 2000 V

ESD (Machine Model) ESD 200 V

V

T

CC1, 2

P

D

STG

13.5 V

1.7 (Note 3, 4) W

-55 to 150

Packing

Type

o

C

Note 2: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Max­imum Ratings" for extended periods may affect device reliability.
Note 3:
a. When mounted on a 70mmx70mmx1.6mm glass epoxy board.

b. Reduced by 13.6mW for each increase in T

of 1oC over 25oC.

A

Note 4: Do not exceed PD and SOA and TJ=150oC values.

Recommended Operating Conditions (TA=25oC)

Parameter Symbol Min Max Unit

Supply Voltage

Operating Temperature T

Sep. 2005 Rev. 1. 2

V

CC1

V

CC2

A

5

4.3 13.2 V

4.3 to V

CC1

070

V

o

C

BCD Semiconductor Manufacturing Limited

Data Sheet

5-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5668

Electrical Characteristics

(TA=25

o

C, V

CC1=VCC2

=5V, V

BIAS

=2.5V, C

VCC1=CVCC2

=0.1µF, unless otherwise specifi ed.)

Parameter Symbol Conditions Min Typ Max Unit

Quiescent Current I

Mute ON Voltage

V

Mute OFF Voltage V

QC

STON

STOFF

No load 20 mA

00.5V

2.0 V

CC1

Focus Driver

Output Offset Voltage V
Maximum Output Voltage V
Closed-Loop Voltage Gain

OOFFC

OMFC

G

VFC

at 10Ω load 3.1 3.4 V
VIN=V

BIAS

± 0.2V

-50 50 mV

23.5 dB

Tracking Driver

Output Offset Voltage V
Maximum Output Voltage V
Closed-Loop Voltage Gain

OOFTK

OMTK

G

VTK

at 10Ω load 3.1 3.4 V
VIN=V

BIAS

± 0.2V

-50 50 mV

23.5 dB

Spindle Motor Driver

V

Output Offset Voltage V
Maximum Output Voltage V
Closed-Loop Voltage Gain

Gain Error by Polarity

Sled Motor Driver

Output Offset Voltage V
Maximum Output Voltage V
Closed-Loop Voltage Gain

T ray M otor Driver

Output Saturation Voltage 1

V

OOFSP

OMSP

G

VSP

∆G

VSP

OOFSL

OMSL

G

VSL

SAT1TR

-50 50 mV
at 8Ω load 3.1 3.3 V
VIN=V

VIN=V

BIAS

BIAS

± 0.2V

± 0.2V

13.3 15.5 17.5 dB

012dB

-100 100 mV
at 8Ω load 3.1 3.3 V
VIN=V

Upper + Lower saturation,

IL=200mA

BIAS

± 0.2V

18.0 20.0 22.0 dB

1.4 1.6 V

Sep. 2005 Rev. 1. 2

BCD Semiconductor Manufacturing Limited

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Data Sheet

5-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5668

Electrical Characteristics (Continued)

Parameter Symbol Conditions Min Typ Max Unit

Output Saturation Voltage

between FWD and REV

Output Saturation Voltage 2

Output Adjustable Gain on

"H" Side Voltage

∆V

V

SAT2TR

G

Tray Motor Driver Input Logic

High Level Input Voltage V
Low Level Input Voltage V
High Level Input Current

Comparator

Input Offset Voltage

Input Common-Mode Volt-

age Range

V

Voltage Gain

Output Sink Current

Saturation Voltage

I

V

SAT1TR

VTRH

IH

IL

I

IH

V

IO

CM

G

V

SINK

SAT

Output Saturation Voltage 1

between FWD and REV

Upper + Lower saturation,

=500mA

I

L

"H" side output for input

(VCTL=1V)

V

FWD=VREV

=5V

RL ≥ 15kΩ

V

< 1.5V

OUT

I

≤ 2mA

SINK

0.1 V

2.3 2.5 V

7.4 9.2 11 dB

2.0 V

CC1

V

00.8V
180 270 µA

3mV

V

0

CC1

−1.5

V

80 dB

6.0 mA

250 500 mV

Sep. 2005 Rev. 1. 2

BCD Semiconductor Manufacturing Limited

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Data Sheet

5-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5668

Test Circuit

V28

V1

V2

V3

V4

V

V5

V6

1

2

3

4

5

6

28

V27

27

V26

26

V25

25

V24

24

V23

23

7

V7

VCC1

C

8

V8

9

RL5

45

10

11

RL1

8

12

13

RL3

10

14

AM5668

22

V21

21

RL2

RL4

V20

V

V19

CVCC2

8

10

20

19

18

17

16

15

Sep. 2005 Rev. 1. 2

Figure 4. Test Circuit of AM5668

BCD Semiconductor Manufacturing Limited

8

Data Sheet

5-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5668

Typical Performance Characteristics

4

3

V

=5V

CC1=VCC2

=2.5V

V

BIAS

2

R

=10Ω

(V)

O

Output Voltage: V

L

1

0

-1

-2

-3

-4

-0.3 -0.2 -0.1 0.0 0.1 0.2 0.3

Input Voltage: VIN (V)

Figure 5. Focus Driver Characteristics

4

3

V

=5V

CC1=VCC2

=2.5V

V

BIAS

2

R

=8Ω

(V)

O

Output Voltage: V

L

1

0

-1

-2

-3

-4

-0.4 -0.2 0.0 0.2 0.4

Input Voltage: VIN (V)

4

3

V

=5V

CC1=VCC2

V

=2.5V

BIAS

2

=10Ω

R

(V)

O

Output Voltage: V

L

1

0

-1

-2

-3

-4

-0.3 -0.2 -0.1 0.0 0.1 0.2 0.3

Input Voltage: VIN (V)

Figure 6. Tracking Driver Characteristics

4

3

V

=5V

CC1=VCC2

=2.5V

V

BIAS

2

=8Ω

R

(V)

O

Output Voltage: V

L

1

0

-1

-2

-3

-4

-0.6 -0.4 -0.2 0.0 0.2 0.4 0.6

Input Voltage: VIN (V)

Figure 7. Sled Driver Characteristics

Sep. 2005 Rev. 1. 2

Figure 8. Spindle Driver Characteristics

BCD Semiconductor Manufacturing Limited

9

Data Sheet

5-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5668

Typical Performance Characteristics (Continued)

2.0

1.6

(W)

D

1.2

0.8

0.4

Power Dissipation: P

0.0
0 50 100 150

Ambient Temperature: TA (OC)

Figure 9. Power Dissipation Curve (Note 3)

Sep. 2005 Rev. 1. 2

10

BCD Semiconductor Manufacturing Limited

Data Sheet

5-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5668

Typical Application

SERVO

REF

FOCUS

SLED

2728

V

TRACKING

26

REV

SPIN+

SPIN-

FWD

Tray

Control

Voltage

MUTE

SPINDLE

SERVO

5V

21

18192022232425

M

µ-COM

TRACKING COIL

151617

AM5668

1

Sep. 2005 Rev. 1. 2

2

3

SPIN-

SPIN+

654

7

SERVO

8

5V

M M

11109

141312

FOCUS COIL

Figure 10. Typical Application of AM5668 in DVD Player

BCD Semiconductor Manufacturing Limited

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Data Sheet

5-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5668

Application Information

1. The built-in thermal shutdown circuit mutes the
output current when the chip temperature reaches

o

175

C (T yp). The hysteresis is set to 25oC (T yp), so the

circuit will start up again when the chip temperature
falls to 150

o

C (Typ).

2. In case mute pin voltage is under 0.5V or this pin is
not connected, output current is muted (except for tray
motor driver). Mute pin voltage should be more than

2.0V for normal application.

3. Bias pin (pin 27) should be pulled up to more than

1.2V. In case the bias pin voltage is pulled down below

0.9V (Ty p), the

output current is muted.

4. Insert the bypass capacitor (about 0.1µF) between
pin and GND pin as close as possible to this chip.

V

CC

5. Heat dissipation fins are attached to the GND on

the inside of the package. Make sure to connect them
to the external GND.

6. Tray driver logic input:

FWD
(pin6)

REV

(pin7)

L L OPEN OPEN

LH L H

HL H L

HH L L

VOTR+

(pin10)

VOTR-

(pin9)

Function

Open
mode

Reverse

mode

Forward

mode

Brake

mode

Input circuit of pins 6 and 7 is designed to avoid
simultaneous activation of upper and lower output
tray; however, in order to improve reliability, apply
motor forward/reverse input once through open mode.
We recommend time period for open longer than
10msec.

"H" side output voltage on output pins (VOTR+ or
VOTR-) varies depending on output control terminal
for tray (pin 21). "H" side output voltage is set to three
times (9.2dB Typ ) the voltage of VC TL (pin 21). And,
"L" side output voltage is equal to output saturation
voltage.

Sep. 2005 Rev. 1. 2

12

BCD Semiconductor Manufacturing Limited

Data Sheet

5-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5668

Mechanical Dimensions

Unit: mm(inch)HSOP-28

10.000(0.394)

10.650(0.419)

7.400(0.291)

7.600(0.300)

0.230(0.009)

0.470(0.019)

17.890(0.704)

18.190(0.716)

5.050(0.199)

5.250(0.207)

0.800(0.031)

0.100(0.004)

0.300(0.012)

0.400(0.016)

1.270(0.050)

TYP

0.204(0.008)

0.360(0.014)

o

o

8

0

～

2.180(0.086)

2.330(0.092)

Sep. 2005 Rev. 1. 2

13

2.280(0.090)

2.630(0.104)

BCD Semiconductor Manufacturing Limited

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BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi­cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any
particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use
of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or
other rights nor the rights of others.

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