14

LTC1155

S

APPLICATI

TYPICAL

DC Motor Speed and Torque Control for Cordless Tools and Appliances

1155 TA16

*OPPOSING GATES ARE HELD OFF UNTIL OTHER GATES DROP BELOW 1.5V

0.1

µF

100k

0.01

Ω

LTC1155

GND

IN2

G2

DS2

DS1

G1

IN1

4.5V TO 6V

5V

74HC02

10

µF

IRLZ44

*

*

DIRECTION

VN2222L

IRFZ44

M

IRLZ44

IRFZ44

VN2222L

DISABLE

1155 TA17

SPEED IS PROPORTIONAL TO PULSE WIDTH. TORQUE IS PROPORTIONAL TO CURRENT

0.1

µF

300k

10k

TORQUE

ADJUST

LTC1155

GND

IN2

G2

DS2

DS1

G1

IN1

1.1k

0.1

Ω

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

0.0033

µF

1M

100

Ω

47

µF

16V

+

6V

100k

M

+