MAX14870_15 Datasheet, PDF (9/15 Pages) Maxim Integrated Products – Compact 4.5V to 36V Full-Bridge DC Motor Drivers

MAX14870/MAX14872
Compact 4.5V to 36V
Full-Bridge DC Motor Drivers
Pin Description (continued)
PIN
MAX14870 MAX14872
7
7
8
8
9
9
11
11
—
—
NAME
FAULT
EN
GND
M2
EP
FUNCTION
Open-Drain Active-Low Fault Output. FAULT goes low during an overcurrent condition and
thermal shutdown.
Active-Low Enable Input. Drive EN low to enable the driver outputs. Drive EN high to
three-state the driver outputs.
Ground
Motor Driver Output 2. See the MAX14870 Function Table and MAX14872 Function Table
for more information.
Exposed Pad. Connect to ground.
MAX14870 Function Table
INPUTS
EN
V_SNS
PWM
DIR
1
X
X
X
0
< VSNS_TH
0
X
0
< VSNS_TH
1
0
0
< VSNS_TH
1
1
0
> VSNS_TH
1
0
0
> VSNS_TH
1
1
X = Don’t care.
OUTPUTS
M1
M2
High impedance High impedance
GND
GND
GND
V_DD
Switching
V_DD
GND
Switching
Switching
Switching
OPERATING MODE
Shutdown
Brake
Counterclockwise/reverse
Clockwise/forward
Current regulation
Current regulation
MAX14872 Function Table
INPUTS
EN
V_SNS
FWD
1
X
X
0
< VSNS_TH
0
0
< VSNS_TH
1
0
< VSNS_TH
0
0
< VSNS_TH
1
0
> VSNS_TH
1
0
> VSNS_TH
0
X = Don’t care.
REV
X
0
0
1
1
0
1
OUTPUTS
M1
M2
High impedance High impedance
GND
GND
V_DD
GND
High impedance
GND
V_DD
High impedance
Switching
Switching
Switching
Switching
OPERATING MODE
Shutdown
Brake
Forward
Reverse
Three-state
Current regulation
Current regulation
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