DRV8871_16 Datasheet, PDF (5/25 Pages) Texas Instruments – Brushed DC Motor Driver With Internal Current Sense (PWM Control)

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6.5 Electrical Characteristics
T_A = 25°C, over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
POWER SUPPLY (VM)
VM
VM operating voltage
I_VM
VM operating supply
current
VM = 12 V
I_VMSLEEP
t_ON ⁽¹⁾
VM sleep current
Turn-on time
LOGIC-LEVEL INPUTS (IN1, IN2)
VM = 12 V
VM > V_UVLO with IN1 or IN2 high
V_IL
Input logic low voltage
V_IH
Input logic high voltage
V_HYS
Input logic hysteresis
I_IL
Input logic low current
V_IN = 0 V
I_IH
Input logic high current V_IN = 3.3 V
R_PD
Pulldown resistance
To GND
t_PD
Propagation delay
INx to OUTx change (see Figure 6)
t_sleep
Time to sleep
Inputs low to sleep
MOTOR DRIVER OUTPUTS (OUT1, OUT2)
R_DS(ON)
High-side FET on
resistance
VM = 24 V, I = 1 A, f_PWM = 25 kHz
R_DS(ON)
Low-side FET on
resistance
VM = 24 V, I = 1 A, f_PWM = 25 kHz
t_DEAD
V_d
Output dead time
Body diode forward
voltage
I_OUT = 1 A
CURRENT REGULATION
V_ILIM
Constant for calculating
current regulation (see
Equation 1)
I_OUT = 1 A
t_OFF
PWM off-time
t_BLANK
PWM blanking time
PROTECTION CIRCUITS
V_UVLO
VM falls until UVLO triggers
VM undervoltage lockout
VM rises until operation recovers
V_UV,HYS
VM undervoltage
hysteresis
Rising to falling threshold
I_OCP
Overcurrent protection trip
level
t_OCP
t_RETRY
T_SD
Overcurrent deglitch time
Overcurrent retry time
Thermal shutdown
temperature
T_HYS
Thermal shutdown
hysteresis
(1) t_ON applies when the device initially powers up, and when it exits sleep mode.
DRV8871
SLVSCY9A – AUGUST 2015 – REVISED JANUARY 2016
MIN
TYP
MAX UNIT
6.5
45
V
3
10
mA
10
µA
40
50
µs
0.5
V
1.5
V
0.5
V
–1
1
μA
33
100
μA
100
kΩ
0.7
1
μs
1
1.5
ms
307
360
mΩ
258
320
mΩ
220
ns
0.8
1
V
59
64
25
2
6.1
6.3
100
180
3.7
4.5
1.5
3
150
175
40
69
kV
µs
µs
6.4
V
6.5
mV
6.4
A
μs
ms
°C
°C
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