BH6578FVM ROHM Co. Ltd., BH6578FVM Datasheet

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BH6578FVM

Manufacturer Part Number
BH6578FVM
Description
Reversible Motor Driver Ics For Brush Motors Reversible Motor Drivers
Manufacturer
ROHM Co. Ltd.
Datasheet

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Reversible Motor Driver ICs for Brush Motors
Reversible Motor Drivers
for Output 0.5A (1 Motor)
BH6578FVM,BD7931F
●Description
●Features
●Applications
●Absolute Maximum Ratings (Ta=25℃)
●Recommended Operating Conditions
The BH6578FVM and BD7931F are reversible motor drivers with power H-bridge CMOS circuitry at the output, ensuring a
wide output dynamic range. Two logic inputs allow four modes of operation: forward, reverse, stop (idle), and brake.
CDs/DVDs
*
**
1) Wide dynamic range loading driver with MOS output [Ron = 1.0Ω (Top+Bottom)]
2) Loading driver voltage setting terminal
3) Built-in thermal shutdown circuit (TSD)
4) MSOP-8 package (BH6578FVM)
5) SOP-8 package (BD7931F)
Supply Voltage
Power dissipation
Operating temperature
Storage temperature
Output current
Junction temperature
Derated at 4.4mW/°C at Ta>25°C when mounted on a 70mm x 70mm x 1.6mm thick glass epoxy substrate
with less than a 3% copper foil occupancy ratio .
with less than a 3% copper foil occupancy ratio.
Derated at 5.5mW/°C at Ta>25°C when mounted on a 70mm x 70mm x 1.6mm thick glass epoxy substrate
Supply voltage
Parameter
Parameter
TECHNICAL NOTE
Symbol
Symbol
Tjmax
Topr
Tstg
Vcc
Iout
Vcc
Pd
BH6578FVM
BH6578FVM
-35~ +85
4.5~5.5
0.55 *
7
-55~ +150
Ratings
Range
500
150
-40~ +85
BD7931F
BD7931F
4.5~ 14
0.69**
15
Unit
mA
Unit
W
V
V
Ver.B Oct.2005

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BH6578FVM Summary of contents

Page 1

... Output 0.5A (1 Motor) BH6578FVM,BD7931F ●Description The BH6578FVM and BD7931F are reversible motor drivers with power H-bridge CMOS circuitry at the output, ensuring a wide output dynamic range. Two logic inputs allow four modes of operation: forward, reverse, stop (idle), and brake. ●Features 1) Wide dynamic range loading driver with MOS output [Ron = 1.0Ω (Top+Bottom)] ...

Page 2

... Hi-impedance ●Electrical Characteristics BH6578FVM (Unless otherwise specified, Ta=25℃, Vcc=5V) Parameter Standby current 〈Loading Driver〉 Output offset voltage Input threshold voltage H Input threshold voltage L ON resistance Voltage gain (Loading) Voltage gain difference (Loading) Input bias current ...

Page 3

... Load current[mA] Fig.2 Output loss voltage L (BH6578FVM) Vcc=5V, CONT=OPEN REV mode 0.0 -0.1 -0.2 -35℃ -0.3 25℃ 85℃ -0.4 0 100 200 300 Load current[mA] Fig.5 Output loss voltage H (BH6578FVM) Vcc=5V, CONT=OPEN REV mode 0.4 85℃ 25℃ -35℃ 0.3 0.2 0.1 0.0 0 100 200 300 Load current[mA] Fig.8 Output loss voltage L (BD7931F) ...

Page 4

... AMBIENT TEMPERATURE: Ta [℃] *When mounted on a 70mm x 70mm x 1.6mm thick glass epoxy substrate with less than a 3% copper foil occupancy ratio Block Diagram / Standard Example Application Circuit BH6578FVM, BD7931F Pin description Pin Pin Function No. Name 1 Vcc Supply voltage ...

Page 5

... Output Equivalent Circuits BH6578FVM LDCONT 10KΩ 6 Fig.14 OUT+/OUT- VCC 2 3 Fig.15 ●Operation Notes (1) CONTROL LOGIC When INFWD is “H” and INREV is “L,” forward rotation mode is achieved and current flows from OUT When both INFWD and INREV are “H,” the system is in brake mode. The operation in such event is described as follows: the top-side transistor turns OFF, stopping the supply of current to the motor drive while the bottom-side transistor turns ON to absorb the reverse-EMF of the motor and the brake is applied ...

Page 6

... The IC incorporates a built-in thermal shutdown circuit (TSD circuit). The thermal shutdown circuit (TSD circuit) is designed only to shut the IC off to prevent thermal runaway not designed to protect the IC or guarantee its operation. Do not continue to use the IC after operating this circuit or use the environment where the operation of this circuit is assumed. BH6578FVM BD7931F 10. Testing on application boards When testing the application board, connecting a capacitor to a pin with low impedance subjects the IC to stress ...

Page 7

Regarding input pin of the IC This monolithic IC contains P+ isolation and P substrate layers between adjacent elements in order to keep them isolated. P-N junctions are formed at the intersection of these P layers with the N ...

Page 8

Number Explanation ROHM part number BD7931 SOP8 Dimensions 5.0±0 0.15±0.1 0.1 1.27 0.4±0.1 MSOP8 Dimensions 2.9 ± 0 +0.05 0.145 0.475 −0.03 +0.05 0.22 −0.04 0.08 0.65 0.08 ...

Page 9

Appendix 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 ...

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