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BD7763EFV Datasheet(PDF) 10 Page - Rohm |
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BD7763EFV Datasheet(HTML) 10 Page - Rohm |
10 / 19 page 10/15 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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