MC33912_10 Datasheet, PDF (13/94 Pages) Freescale Semiconductor, Inc – LIN System Basis Chip with DC Motor Pre-driver and Current Sense

MC33912G5AC / MC34912G5AC
Table 4. Static Electrical Characteristics (continued)
ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
Characteristics noted under conditions 5.5 V ≤ V_SUP ≤ 18 V, -40°C ≤ T_A ≤ 125°C for the 33912 and -40°C ≤ T_A ≤ 85°C for the
34912, unless otherwise noted. Typical values noted reflect the approximate parameter mean at T_A = 25°C under nominal
conditions, unless otherwise noted.
Characteristic
L1, L2, L3 AND L4 INPUT PINS (L1, L2, L3, L4)
Low Detection Threshold⁽³⁴⁾
5.5 V < V_SUP < 27 V
High Detection Threshold⁽³⁴⁾
5.5 V < V_SUP < 27 V
Hysteresis⁽³⁴⁾
5.5 V < V_SUP < 27 V
Input Current⁽³⁵⁾
-0.2 V < V_IN < VS1
Analog Input Impedance⁽³⁶⁾
Analog Input Divider Ratio (RATIO_Lx = V_Lx / V_ADOUT0)
LXDS (Lx Divider Select) = 0
LXDS (Lx Divider Select) = 1
Analog Output offset Ratio
LXDS (Lx Divider Select) = 0
LXDS (Lx Divider Select) = 1
Analog Inputs Matching
LXDS (Lx Divider Select) = 0
LXDS (Lx Divider Select) = 1
WINDOW WATCHDOG CONFIGURATION PIN (WDCONF)⁽³⁷⁾
Symbol
Min
V_THL
V_THH
V_HYS
I_IN
R_LXIN
RATIO_LX
V_RATIOLx-
OFFSET
LX_MATCHING
2.0
3.0
0.4
-10
800
0.95
3.42
-80
-22
96
96
Typ
2.5
3.5
0.8
–
1300
1.0
3.6
6.0
2.0
100
100
Max
3.0
4.0
1.4
10
2000
1.05
3.78
80
22
104
104
Unit
V
V
V
µA
kΩ
mV
%
External Resistor Range
R_EXT
20
–
200
kΩ
Watchdog Period Accuracy with External Resistor (Excluding Resistor
Accuracy)⁽³⁸⁾
WD_ACC
-15
–
15
%
ANALOG MULTIPLEXER
Temperature Sense Analog Output Voltage
T_A = -40°C
T_A = 25°C
T_A = 125°C
V_{ADOUT0_TEMP}
V
2.0
-
2.8
2.8
3.0
3.6
3.6
-
4.6
Temperature Sense Analog Output Voltage per characterization⁽³⁹⁾
V_{ADOUT0_25}
3.1
3.15
3.2
V
T_A = 25°C
Internal Chip Temperature Sense Gain
Internal Chip Temperature Sense Gain per characterization at 3
temperatures⁽³⁹⁾ See Figure 16, Temperature Sense Gain
S_TTOV
9.0
10.5
12
mV/K
S_{TTOV_3T}
9.9
10.2
10.5
mV/K
VSENSE Input Divider Ratio (RATIO_VSENSE = V_VSENSE / V_ADOUT0)
RATIO_VSENSE
5.5 V < V_SUP < 27 V
5.0
5.25
5.5
Notes
34. The unused Lx pins must be connected to ground.
35. Analog multiplexer input disconnected from Lx input pin.
36. Analog multiplexer input connected to Lx input pin.
37. For V_SUP 4.7 V to 18 V
38. Watchdog timing period calculation formula: t_PWD [ms] = [0.466 * (R_EXT - 20)] + 10 with (R_EXT in kΩ)
39. These limits have been defined after laboratory characterization on 3 lots and 30 samples. These tighten limits could not be guaranteed
by production test.
Analog Integrated Circuit Device Data
Freescale Semiconductor
33912
13