|
|
PDF BH6789FVM Data sheet ( Hoja de datos )
| Número de pieza | BH6789FVM | |
| Descripción | 5V Single-phase Full wave Fan motor driver | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de BH6789FVM (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
|
No Preview Available !
Datasheet
DC Brushless Fan Motor Driver
5V Single-phase Full wave
Fan motor driver
BH6789FVM
●Description
This is the summary of models that suit for notebook PC cooling fan motor. They employ Bi-CMOS process and realize low
ON resistance, low power consumption and quiet drive.
●Features
■ Compact package (MSOP8)
■ BTL soft switching drive
■ Constant voltage output for hall element
■ Lock protection and auto restart
(without external capacitor)
■ Lock alarm signal (AL) output
●Package(s)
MSOP8
W(Typ.) x D(Typ.) x H(Max.)
2.90mm x 4.00mm x 0.90mm
●Application
■ Compact 5V fan such as notebook PC cooling fan
●Absolute maximum ratings
Parameter
Symbol
Limit
Supply voltage
Vcc 7
Power dissipation
Pd 585*
Operating temperature
Topr
-40 to +105
Storage temperature
Tstg -55 to +150
Output current
Iomax
1000**
AL signal output voltage
Val
7
AL signal output current
Ial
5
Junction temperature
Tjmax
150
* Reduce by 4.68mW/℃ over Ta=25ºC(70.0mm×70.0mm×1.6mm glass epoxy board)
** This value is not to exceed Pd
●Operating conditions
Parameter
Symbol
Operating supply voltage range Vcc
Hall input voltage range
Vh
Limit
2.0 to 6.0
0.4 to Vcc-1.1
MSOP8
Unit
V
mW
℃
℃
mA
V
mA
℃
Unit
V
V
○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
1/10
TSZ02201-0H1H0B100110-1-2
11.Jul.2012 Rev.001
1 page  
BH6789FVM
Datasheet
●Description of operations
1) Lock protection and automatic restart circuit
Motor rotation is detected by hall signal, and lock detection ON time (Ton) and lock detection OFF time (Toff) are set
by IC internal counter. External part (C or R) is not required. Timing chart is shown in Fig.8.
Idling
H+
OUT1
OUT2
AL
Toff Ton
Output Tr OFF ON
Motor Lock
locking detection
Hi(open collector)
Lock Recovers
release normal
operation
Fig.8 Lock protection timing chart
2) Soft switching function (silent drive setting)
Input signal to hall amplifier is amplified to produce an output signal.
When the hall element output signal is small, the gradient of switching of output waveform is gentle; When it is large,
the gradient of switching of output waveform is steep. Enter an appropriate hall element output to IC where output
waveform swings sufficiently.
(H+)-(H-)
OUT1
Fig.9 Relation between hall element output amplitude and output waveform
3) Hall input setting
Hall input voltage range is shown in operating conditions.
Vcc
Vcc-1.1V
0.4V
GND
Fig.10 Hall input voltage range
Adjust the value of hall element bias resistor R1 in Fig.11 so that the input voltage of a hall amplifier is input in "hall
input voltage range" including signal amplitude.
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/10
TSZ02201-0H1H0B100110-1-2
11.Jul.2012 Rev.001
5 Page 
Datasheet
Notice
Precaution on using ROHM Products
1. Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment,
OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you
intend to use our Products in devices requiring extremely high reliability (such as medical equipment (Note 1), transport
equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car
accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or
serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance.
Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any
damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific
Applications.
(Note1) Medical Equipment Classification of the Specific Applications
JAPAN
USA
EU CHINA
CLASSⅢ
CLASSⅣ
CLASSⅢ
CLASSⅡb
CLASSⅢ
CLASSⅢ
2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor
products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate
safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which
a failure or malfunction of our Products may cause. The following are examples of safety measures:
[a] Installation of protection circuits or other protective devices to improve system safety
[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure
3. Our Products are designed and manufactured for use under standard conditions and not under any special or
extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way
responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any
special or extraordinary environments or conditions. If you intend to use our Products under any special or
extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of
product performance, reliability, etc, prior to use, must be necessary:
[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents
[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust
[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,
H2S, NH3, SO2, and NO2
[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves
[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items
[f] Sealing or coating our Products with resin or other coating materials
[g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of
flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning
residue after soldering
[h] Use of the Products in places subject to dew condensation
4. The Products are not subject to radiation-proof design.
5. Please verify and confirm characteristics of the final or mounted products in using the Products.
6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,
confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power
exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect
product performance and reliability.
7. De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual
ambient temperature.
8. Confirm that operation temperature is within the specified range described in the product specification.
9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in
this document.
Precaution for Mounting / Circuit board design
1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product
performance and reliability.
2. In principle, the reflow soldering method must be used; if flow soldering method is preferred, please consult with the
ROHM representative in advance.
For details, please refer to ROHM Mounting specification
Notice - GE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.002
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet BH6789FVM.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| BH6789FVM | 5V Single-phase Full wave Fan motor driver | ROHM Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |