MAX14870 Datasheet, PDF (9/15 Pages) Maxim Integrated Products – 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
tri-state the driver outputs.
Ground
Motor Driver Output 2. See the Function Tables 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
Tri-State
Current Regulation
Current Regulation
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