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BA6506F Fiches technique(PDF) 9 Page - Rohm

No de pièce BA6506F
Description  Two-Phase Half-Wave Pre Driver Fan Motor Driver
Download  16 Pages
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Fabricant  ROHM [Rohm]
Site Internet  http://www.rohm.com
Logo ROHM - Rohm

BA6506F Fiches technique(HTML) 9 Page - Rohm

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○Product structure:Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays
9/12
TSZ02201-0H1H0B100490-1-2
© 2012 ROHM Co., Ltd. All rights reserved.
18.DEC.2012 Rev.002
TSZ22111・14・001
BA6506F
www.rohm.com
●Safety measure
1) Reverse connection protection diode
Reverse connection of power results in IC destruction as shown in Fig 13. When reverse connection is possible,
reverse connection protection diode must be added between power supply and Vcc.
Fig.13 Current flow when power is connected reversely
2) About measures of voltage rise by back electromotive force
The voltage of output terminal rises by back electromotive force. The diode D1 of Fig.14 is necessary to divide a power
supply line of motor with small signal line, so that the voltage of the output does not affect a power supply line.
Fig.14 Separation of a power supply line
3) FG output
Fig.15 Protection of FG terminal
FG output is an open collector and requires pull-up resistor.
The IC can be protected by adding resistor R1. An excess of absolute maximum rating, when FG output terminal is
directly connected to power supply, could damage the IC.
Vcc
GND
Vcc
GND
Vcc
GND
Internal circuit impedance high
amperage small
Circuit
block
Each
pin
In normal energization
Large current flows
Thermal destruction
Each
pin
Circuit
block
Reverse power connection
No destruction
Each
pin
Circuit
block
After reverse connection
destruction prevention
Protection
resistor R1
Connector
of board
FG
Pull-up
resistor
Vcc
IC
D1


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