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BD7763EFV Datasheet(PDF) 10 Page - Rohm

Part # BD7763EFV
Description  System Motor Driver IC for Half Height Drive(Sensor less)
Download  19 Pages
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BD7763EFV Datasheet(HTML) 10 Page - Rohm

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Datasheet
Datasheet
BD7763EFV
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ02201-0P1P0B800260-1-2
19.NOV.2012 Rev.001
www.rohm.com
TSZ22111・15・001
11.Protect system1(Load protection function)
If full drive continues 130ms(Typ.) to protect focus, tracking, and tilt coil, this function protects IC by turning off
actuator output.
The protection function can be reset by CTL1,2= L(stand-by mode),
when the protection function operates and the output is turned off.
12.Protect system 2 (Connecting to VCC or GND)
This function is to protect output POWER TR when the driver output connects to Vcc or GND.
Spindle,SLED,Actuator,SA
When SINK side POWER TR has been turned on, if the output voltage
(SPVM/2&SLVM/2&AVM/2&SAVM/2<TYP> or more) is detected, the channel concerned will be turned off.
When SOURCE side POWER transistor has been turned on, if the output voltage
(SPVM/2&SLVM/2&AVM/2&SAVM/2<TYP> or less) is detected, the channel concerned will be turned off
13. Protection system 3(Over voltage input protection function)
When detecting LDIN and SLIN1 input voltage more than DVCC×0.9<TYP>, this function protects motor by turning
off the output.
If protection function operates and output is turned off, protection function can be reset by CTL1,2 =L(stand by
mode)
14.Thermal-shut down
Thermal-shutdown circuit (over-temperature protection circuit) is built in to prevent the IC from thermal
breakdown. Use the IC according to the thermal loss allowed in the package. In case the IC is left running over
the allowed loss, the junction temperature rises, and the thermal-shutdown circuit works at a junction temperature
of 175℃(Typ.) (the outputs of all the channels are turned off.).
When the junction temperature drops to 150℃ (Typ.), the IC resumes operation.


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