BH6573FV

Optical disc ICs

1/8

PWM driver for CD

BH6573FV

BH6573FV is a 4-channel PWM driver developed for driving stepping motor, and DC motor of DSC, and also developed
for driving DC motor, and actuator of CD / MD.
This IC has achieved lower power consumption of the set by using power MOSFET in output.

Applications

CD, MD, DSC, DVC

Features

1) Four channels of power MOS-H bridges are contained.
2) Available for PWM input.
3) Applicable for stepping-motor drive.
4) Separating VM into CH1, CH2 and CH3 / 4.
5) Low on-resistance 1.3

(typ.)

6) Low power consumption.
7) SSOP-B24 package.

Absolute maximum ratings (Ta=25

°C)

Parameter

Symbol

Limits

Unit

Topr

Tstg

1000

1025

40~

55~

150

H-bridge power supply voltage

Control circuit power supply voltage

Driver output current

Power dissipation

Operating temperature range

Storage temperature range

1 The current is guaranteed 1.0A is case of the current is turned on/off in a duty-ratio of less than 1/10 with a maximum

on-time of 5msec.

2 When a 70mm

70mm, 1.6mm thick glass epoxy substrate having a copper foil content of less than 3% is mounted.

When the circuit if used at Ta of 25

C or more, subtract 8.2mW per degree from the rating.

Recommended operating conditions

Parameter

Symbol

Min.

Typ.

Max.

Unit

1.6

5.0

5.5

2.0

3.0

5.5

H-bridge power supply voltage

Control circuit power supply voltage

BH6573FV

Optical disc ICs

2/8

Block diagram

INTERFACE

PREDRIVE

INTERFACE

PREDRIVE

INTERFACE

H BRIDGE

(Pow MOS)

H BRIDGE

(Pow MOS)

H BRIDGE

(Pow MOS)

PSB2

PSB1

H BRIDGE

(Pow MOS)

PREDRIVE

Pin descriptions

Pin No.

Pin name

Functions

GND

IN1R

IN1F

OUT1F

VM1

OUT1R

OUT2R

VM2

OUT2F

IN2F

IN2R

GND

CH1 Reverse input

CH1 Forward input

CH1 Forward output

Power supply for CH1 power block

CH1 Reverse output

CH2 Reverse output

Power supply for CH2 power block

CH2 Forward output

CH2 Forward input

CH2 Reverse input

Power supply for pre block

Pin No.

Pin name

Functions

GND

CH4 Reverse input

CH4 Forward input

CH4 Forward output

CH4 Reverse output

Power supply for CH3, 4 power block

CH3 Reverse output

CH3 Forward output

CH3 Forward input

CH3 Reverse input

CH3, 4 power save control pin

CH1, 2 power save control pin

GND

IN4R

IN4F

OUT4F

OUT4R

VM3

OUT3R

OUT3F

IN3F

IN3R

PSB2

PSB1

BH6573FV

Optical disc ICs

4/8

Electrical characteristics (unless otherwise noted, Ta=25

°C, V

=5V, V

=3V, f

=176kHz, RL=8

-47uH)

Parameter

Symbol

Min.

Typ.

Max.

Unit

Conditions

Measuring

circuit

IMST

tRISE

tFALL

MIN

-
-

0.4

-
-

-
-
-
-

220

200

-
-
-
-

1.3

1.8

0.2

350

0.3

2.0

2.6

usec

nsec

Fig.1

Drivimg 4channels

Sum of on-resistance of top and that of bottom (V

=5V, V

=3V)

Sum of on-resistance of top and that of bottom (V

=2.5V, V

=3V)

Output pulse more than 1/2tMIN

<H-bridge power supply voltage>

Upon no signal

Upon no signal

Upon operation

"H" level input voltage

"L" level input voltage

"H" level input current

"L" level input current

Output in-resistance 1

Output in-resistance 2

Propagation delay time

Minimum input pulse width

This product is not designed for protection against radioactive rays.

BH6573FV

Optical disc ICs

5/8

Measuring circuit

INTERFACE

PREDRIVE

INTERFACE

PREDRIVE

INTERFACE

H BRIDGE

(Pow MOS)

H BRIDGE

(Pow MOS)

H BRIDGE

(Pow MOS)

PSB2

PSB1

H BRIDGE

(Pow MOS)

Fig.1

PREDRIVE

VO2

VO4

IIN1R

IIN1F

IIN2F

IDD

VDD

IMST

IIN2R

IIN4R

IIN4F

IIN3F

IIN3R

VO1

VO3

Circuit operation

Hi-Z

IN1

OUT1

PSB1

Truth table

PSB mode

PSB2

Output is followed by truth table

Hi-Z

Output is followed by truth table

Hi-Z

Output is followed by truth table

Hi-Z

OUT1, 2

OUT3, 4

PSB1

PSB2

BH6573FV

Optical disc ICs

8/8

Operation notes

1. Connect a bypass capacitor (0.1

µF) across the supply voltage lines close to the IC pins.

2. Avoid short circuit between each driver output (4, 6, 7, 9, 16, 17, 19, 20pin) and power supply (5, 8, 12, 18pin), or
GND (1, 13pin). And avoid short circuit between output terminals (4-6, 7-9, 16-17, 19-20).

External dimensions (Units : mm)

SSOP-B24

0.15

0.1

1.15

0.1

0.65

7.8

0.2

7.6

0.3

5.6

0.2

0.3Min.

0.22

0.1

Appendix

Appendix1-Rev1.0

The products listed in this document are designed to be used with ordinary electronic equipment or devices

(such as audio visual equipment, office-automation equipment, communications devices, electrical

appliances and electronic toys).

Should you intend to use these products with equipment or devices which require an extremely high level of

reliability and the malfunction of with would directly endanger human life (such as medical instruments,

transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other

safety devices), please be sure to consult with our sales representative in advance.

Notes

No technical content pages of this document may be reproduced in any form or transmitted by any

means without prior permission of ROHM CO.,LTD.

The contents described herein are subject to change without notice. The specifications for the

product described in this document are for reference only. Upon actual use, therefore, please request

that specifications to be separately delivered.

Application circuit diagrams and circuit constants contained herein are shown as examples of standard

use and operation. Please pay careful attention to the peripheral conditions when designing circuits

and deciding upon circuit constants in the set.

Any data, including, but not limited to application circuit diagrams information, described herein

are intended only as illustrations of such devices and not as the specifications for such devices. ROHM

CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any

third party's intellectual property rights or other proprietary rights, and further, assumes no liability of

whatsoever nature in the event of any such infringement, or arising from or connected with or related

to the use of such devices.

Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or

otherwise dispose of the same, no express or implied right or license to practice or commercially

exploit any intellectual property rights or other proprietary rights owned or controlled by

ROHM CO., LTD. is granted to any such buyer.

Products listed in this document use silicon as a basic material.

Products listed in this document are no antiradiation design.

About Export Control Order in Japan

Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.

Document Outline

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Document Outline

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: BH6573FV