MAX14871_14 Datasheet, PDF (3/15 Pages) Maxim Integrated Products – 4.5V to 36V Full-Bridge DC Motor Driver

MAX14871
4.5V to 36V Full-Bridge DC Motor Driver
Electrical Characteristics (continued)
(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 3)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
CURRENT REGULATION (VREF, SNS, COM, TCOFF, MODE)
MODE Select Threshold
MODE Internal Pulldown
Resistance
VREF Internal/External Select
Threshold
VREF Voltage Range for Exter-
nal VREF Current Regulation
V_{MODE_TH}
R_{MODE_PD}
V_{VREF_TH}
V_VREF
Fixed Off-Time, Fast Decay Current
Regulation
25% Ripple Current Regulation
Fixed Off-Time, Slow Decay Current
Regulation
V_MODE = 5V
V_DD ≥ 5V
V_DD < 5V
0.2
0.5
1
1.5
0.6
1
2.2
0.2
0.4
0.5
2
0.5
1.3
VREF Input Leakage
I_{VREF_LKG} VREF = 2V
-1
+1
SNS Threshold for Internal
V_VREF Current Regulation
SNS Threshold for External
V_VREF Current Regulation
V_{SNS_IVR_}
THR
V_SNS rising, V_VREF < V_{VREF_TH}, All
current regulation modes
V_{SNS_IVR_THF}
V_SNS falling, 25% Ripple Mode,
V_VREF < V_{VREF_TH}
V_{SNS_ER_THR}
V_SNS rising, V_VREF > V_{VREF_TH},
All current regulation modes
V_{SNS_ER_THF}
V_SNS falling, 25% Ripple Mode,
V_VREF > V_{VREF_TH}
Current-Sense Amplifier Gain
A_V
SNS Input Leakage Current
I_{SNS_LKG}
COM Leakage Current
I_{COM_LKG}
TCOFF Current
I_TCOFF
TCOFF Threshold
V_TCOFF
LOGIC SIGNALS (PWM, DIR, EN, FAULT)
V_VREF = 1V (Note 4)
V_SNS = ±250mV
EN = High, V_COM = ±250mV
TCOFF is connected to GND
94
100 110
-82
9.6
-1
-1
6
0.92
-75
-69
V_VREF
/ A_V
0.75 x
V_VREF
/A_V
10
10
1
10.5
+1
+1
15
1.08
Input Logic-High Voltage
V_IH
PWM, DIR
2
Input Logic-Low Voltage
V_IL
PWM, DIR
0.8
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, EN, V_INPUT = 5.5V or 0V
-1
+1
FAULT Output Low Voltage
V_OL
FAULT asserted, I_SINK = 5mA
0.5
FAULT Off Leakage Current
I_{F_LKG}
FAULT deasserted, V_FAULT = 5.5V
-1
+1
PROTECTION
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
T_SHDN
Temperature rising, FAULT asserted
T_{SHDN_HYST}
+160
10
UNITS
V
MΩ
V
V
μA
mV
V
V/V
μA
μA
μA
V
V
V
V
V
μA
V
μA
°C
°C
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