Datasheet

14
LTC1155
U
SA
O
PP
L
IC
AT
ITY
P
I
CA
L
DC Motor Speed and Torque Control for Cordless Tools and Appliances
Full H-Bridge Driver with Shoot-Through Current Lockout and Stall Current Shutdown (f
O
< 100Hz)
1155 TA16
*OPPOSING GATES ARE HELD OFF UNTIL OTHER GATES DROP BELOW 1.5V
0.1µF
100k
0.01Ω
LTC1155
GND
IN2
G2
DS2V
S
DS1
G1
IN1
4.5V TO 6V
5V
74HC02
10µF
IRLZ44
*
*
DIRECTION
VN2222L
IRFZ44
M
IRLZ44
IRFZ44
VN2222L
DISABLE
1155 TA17
SPEED IS PROPORTIONAL TO PULSE WIDTH. TORQUE IS PROPORTIONAL TO CURRENT
0.1µF
300k
10k
TORQUE
ADJUST
LTC1155
GND
IN2
G2
DS2V
S
DS1
G1
IN1
1.1k
0.1Ω
IRFZ24
SMALL DC APPLIANCE
OR TOOL MOTOR
1A TO
10A
MAX
1M
–
+
1/2
LT1017
100k
120k
10k
SPEED
ADJUST
–
+
1/2
LT1017
1M
1M
0.0033µF
1M
100Ω
47µF
16V
+
6V
100k
M
+