○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays

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TSZ02201-0H1H0B100490-1-2

© 2012 ROHM Co., Ltd. All rights reserved.

18.DEC.2012 Rev.002

TSZ22111・14・001

BA6506F

www.rohm.com

●Description of operations

1) Lock protection and automatic restart

○CR timer system

Charging and discharging time at LD terminal depends on the capacitor equipped externally on LD terminal. Charging

and discharging time is determined as follows:

C

： Capacity of capacitor equipped externally on LD terminal

ＶLDCL

： LD terminal clamping voltage

ＶLDCP ： LD terminal comparator voltage

ＩLDC

： LD terminal charging current

ＩLDD

： LD terminal discharging current

Timing chart of LD terminal is shown in Fig.10.

Fig.10 Lock protection (CR timer system) timing chart

TON(charging time) =

C×(VLDCL-VLDCP)

ILDC

TOFF(discharging time)=

C×(VLDCL-VLDCP)

ILDD

H-

Motor

locking

Lock

detection

Lock

release

A1

LD terminal clamping

voltage

AL(for BA6406F)

LD

Recovers normal

operation

Output Tr OFF

TON

HIGH(open collector)

TOFF

ON

FG(for BA6506F)

LD terminal comparator

voltage