Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.NET

X  

Preview PDF Download HTML

BA6247FP-Y Datasheet(PDF) 11 Page - Rohm

Part No. BA6247FP-Y
Description  Reversible motor drivers (for two motors series)
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BA6247FP-Y Datasheet(HTML) 11 Page - Rohm

Back Button BA6247FP-Y Datasheet HTML 7Page - Rohm BA6247FP-Y Datasheet HTML 8Page - Rohm BA6247FP-Y Datasheet HTML 9Page - Rohm BA6247FP-Y Datasheet HTML 10Page - Rohm BA6247FP-Y Datasheet HTML 11Page - Rohm BA6247FP-Y Datasheet HTML 12Page - Rohm BA6247FP-Y Datasheet HTML 13Page - Rohm BA6247FP-Y Datasheet HTML 14Page - Rohm BA6247FP-Y Datasheet HTML 15Page - Rohm Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 16 page
background image
Technical Note
11/15
BA6246, BA6246N, BA6247FP-Y, BA6239A, BA6238A, BA6238AN
www.rohm.com
2009.04 - Rev.A
c
2009 ROHM Co., Ltd. All rights reserved.
2) Output high voltage setting
This function optionally sets output voltage by the VR pin and controls the motor rotating speed. However, when the
output high voltage is set to a low level, consumption at IC increases. Carry out thermal design with sufficient margin
incorporated with the power dissipation (Pd) under the actual application condition taken into account. Please do not to
exceed the VCC1 and VCC2 voltage forced to the VR pin voltage.
a) BA6246, BA6246N, BA6247FP-Y
The circuit diagram associated with the output high voltage setting VR pin is as per shown on the right.
The output high and low voltages VOH and VOL are expressed by:
VOH = VR + ( VF(Q5) + VF(Q4) ) - ( VF(Q2) + VF(Q3) )
VOH ≈ VR
VOL = VSAT(Q7) + VF(Q6)
(Reference values; VSAT ≈ 0.2V, VF ≈ 0.7V)
In addition, the relation of VREF voltage to output voltage
is expressed by:
VR < VCC1 - VSAT(Q1) - VF(Q4) - VF(Q5)
VR < VCC2 - VSAT(Q3) + (VF(Q2) +VF(Q3)) - ( VF(Q4) + VF(Q5) )
Therefore, when the VR voltage condition is as follows, the output high voltage is restricted.
VR > VCC1 - VSAT(Q1) - VF(Q4) - VF(Q5)
VR > VCC2 - VSAT(Q3) + (VF(Q2) +VF(Q3)) - ( VF(Q4) + VF(Q5) )
VOH = VCC1 - VSAT(Q1) - VF(Q2) - VF(Q3)
VOH = VCC2 - VSAT(Q3)
b) BA6239A
The circuit diagram associated with the output high voltage setting VR pin is as per shown on the right.
The output high and low voltages VOH and VOL are expressed by:
VOH = VR - ( VSAT(Q1) + VF(Q2) )
VOL = VSAT(Q3) + VF(Q4)
(Reference values; VSAT ≈ 0.1V, VF ≈ 0.7V)
In addition, the relation of VREF voltage to output voltage
is expressed by:
( VSAT(Q1) + VF(Q2) ) < VR < VCC2 - VSAT(Q2) + VF(Q2) + VSAT(Q1)
Therefore, when the VR voltage condition is as follows,
the output high voltage is restricted.
VR > VCC2 - VSAT(Q2) + VF(Q2) + VSAT(Q1)
VOH = VCC2 - VSAT(Q2)
VR
VCC2
Q1
Q2
OUT
GND
Q4
Q3
Fig.36 BA6239A
VCC2
VCC1
VR
Q1
Q2
Q3
Q4
Q5
OUT
GND
Q6
Q7
Fig.35 BA6246, BA6246N, BA6247FP-Y


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16 


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn