DRV8842_15 Datasheet, PDF (6/27 Pages) Texas Instruments – DC Motor Driver IC

DRV8842
SLVSAB8F – MAY 2010 – REVISED DECEMBER 2015
Electrical Characteristics (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
PROTECTION CIRCUITS
I_OCP
Overcurrent protection trip level
t_TSD
Thermal shutdown temperature
CURRENT CONTROL
Die temperature
I_REF
V_TRIP
VREF input current
ISENSE trip voltage
VREF = 3.3 V
VREF = 3.3 V, 100% current setting
VREF = 3.3 V, 5% current setting
ΔI_TRIP
Current trip accuracy
(relative to programmed value)
VREF = 3.3 V, 10% to 34% current setting
VREF = 3.3 V, 38% to 67% current setting
VREF = 3.3 V, 71% to 100% current setting
A_ISENSE Current sense amplifier gain
Reference only
6.6 Typical Characteristics
MIN
6
150
–3
635
–25%
–15%
–10%
–5%
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TYP MAX UNIT
A
160 180 °C
3 μA
660 685 mV
25%
15%
10%
5%
5
V/V
7
6.5
6
5.5
5
-40qC
4.5
25qC
85qC
125qC
4
10
15
20
25
30
35
40
45
V_(VMx) (V)
D001
Figure 1. I_VMx vs V_(VMx)
400
-40°C
25°C
85°C
125°C
350
300
250
200
150
8
13
18
23
28
33
38
43
V_(VMx) (V)
C001
Figure 3. R_DS(ON) vs V_(VMx)
14
12
10
8
6
10
15
350
20
25
30
35
V_(VMx) (V)
Figure 2. I_VMxQ vs V_(VMx)
-40qC
25qC
85qC
125qC
40
45
D002
325
300
275
250
225
200
175
150
±50
8V
24 V
45 V
±25
0
25
50
75 100 125
T_A (ƒC)
C002
Figure 4. R_DS(ON) vs Temperature
6
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