AM8068

Motor Driver ICs

1) H-Bridge basic operating mode：

a) Forward mode

Definition：When

IN_A=H，IN_B=L，then

OUT_A=H，OUT_B=L

b) Reverse mode

Definition：When

IN_A=L，IN_B=H，then

OUT_B=H，OUT_A=L

c)

Stop/Brake mode

Definition：When

IN_A=IN_B= H，then

OUT_A=OUT_B=L

d) Stop mode

Definition：When

IN_A=IN_B= L，then

OUT_A=OUT_B=Hi-Z

Q2

Q1

M

Q4

Q3

ON

OFF

OFF

ON

Q2

Q1

M

Q4

Q3

OFF

ON

ON

OFF

Q2

Q1

M

Q4

Q3

OFF

OFF

ON

ON

Q2

Q1

M

Q4

Q3

OFF

OFF

OFF

OFF

a) Forward mode

b) Reverse mode

c) Brake mode

d) Stop mode

1) Over-temperature protection

If the IC junction temperature exceeds 150 ﾟ C (Typ.), the internal over-temperature protection function will be

triggered, and all FETs in the H-bridge are disabled, that will ensure the safety of customers' products. If the

IC junction temperature falls to 125 ﾟ C(Typ.), the IC resumes automatically.

AMtek semiconductors

May. 2018 V1.1

- 7 -