(V
DD
= 4.5V to 36V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
DD
= 12V, T
A
= +25°C) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DRIVER (M1, M2)
Driver Output Resistance
(High Side + Low Side)
R
ON
I
M_
= 2.5A
T
J
= +25°C 280 395
mΩ
T
J
= +125°C 410 580
Driver Overload Current Limit I
M_OL
3 A
M1, M2 Leakage Current I
M_LKG
EN = High, V
M1
= V
M2
= 0V or V
DD
-1 +1 μA
M1, M2 Body Diode
Forward-Voltage
V
BF
Low-side diode, EN = high, I
F
= 2.5A 1.5
V
High-side diode, EN = high, I
F
= 2.5A 1.5
CURRENT REGULATION (SNS, COM)
SNS Current Sense Threshold V
SNS_TH
V
SNS
rising (Note 3) 94 100 110 mV
SNS Input Leakage Current I
SNS_LKG
V
SNS
= ±250mV -1 +1 μA
COM Leakage Current I
COM_LKG
EN = high, V
COM
= ±250mV -1 +1 μA
LOGIC SIGNALS (PWM, DIR, FWD, REV, EN, FAULT)
Input Logic-High Voltage V
IH
FWD, REV, PWM, DIR 2 V
Input Logic-Low Voltage V
IL
FWD, REV, PWM, DIR 0.8 V
EN Input Logic-High Voltage V
EN_IH
1.6
EN Input Logic-Low Voltage V
EN_IL
0.4
Input Leakage Current I
IL
PWM, DIR, FWD, REV, EN,
V
INPUT
= 5.5V or 0V
-1 +1 μA
FAULT Output Low Voltage V
OL
FAULT asserted, I
SINK
= 5mA 0.5 V
FAULT Off Leakage Current I
F_LKG
FAULT deasserted, V
FAULT
= 5.5V -1 +1 μA
PROTECTION
Thermal-Shutdown Threshold T
SHDN
Temperature rising, FAULT asserted +160 °C
Thermal-Shutdown Hysteresis T
SHDN_HYST
10 °C
MAX14870/MAX14872 Compact 4.5V to 36V
Full-Bridge DC Motor Drivers
www.maximintegrated.com
Maxim Integrated
│
3
Electrical Characteristics (continued)
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