MC34921 Datasheet, PDF (11/36 Pages) List of Unclassifed Manufacturers – Configurable Motor Driver IC with Power Supplies

STATIC ELECTRICAL CHARACTERISTICS
Table 3. Static Electrical Characteristics (continued)
Characteristics noted under conditions 16 V ≤ B+ ≤ 34 V, 0°C ≤ T_A ≤ 70°C, and 0°C ≤ T_J ≤ 100°C unless otherwise noted.
Typical values noted reflect the approximate parameter means at T_A = 25°C under nominal conditions unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
Supervisor Circuitry
Minimum Function B+ for Charge Pump, Oscillator Up
Reset/Fault Registers Valid ⁽¹⁰⁾
B+
V
9.0
–
–
Minimum Function V_5.0 for RST Operational
RST V_OL ≤ 0.05 V @ 1.0 mA ⁽¹⁰⁾
V_{5.0 RST}
V
2.0
–
–
Minimum Function V_3.3 for RST Operational
RST V_OL ≤ 0.05 V @ 1.0 mA ⁽¹⁰⁾
RST Low Voltage ⁽¹¹⁾
I_RST ≤ 5.0 mA
V_{3.3 RST}
V
2.0
–
–
V_OL
V
–
0.1
0.25
RST V_5.0 Threshold
V_5.0 Rising
V_5.0 Falling
V
V_{5.0 t+}
V_{5.0 t–}
–
4.65
4.75
4.5
4.6
4.70
RST Hysteresis for V_5.0
RST V_3.3 Threshold
V_3.3 Rising
V_3.3 Falling
RST Hysteresis for V_3.3
RST V_CORE Threshold
V_CORE Falling
RST Hysteresis for V_CORE
Overtemperature Junction Temperature⁽¹²⁾
T_J Rising
Overtemperature Hysteresis⁽¹²⁾
T_J Falling
Thermal Warning ⁽¹²⁾
B+ Undervoltage Threshold to Assert RST
V_5.0 = +5.0 V, B+ Falling
B+ Undervoltage Threshold Hysteresis⁽¹³⁾
Minimum B+ Necessary to Clear B+ Fault
V_5.0 = +5.0 V, B+ Rising
V_HYSV5.0
10
V_{3.3 t+}
–
V_{3.3 t–}
2.8
V_{HYS_3.3}
10
V_CORE
V_{HYS CORE}
T_{J (OVER)}
T_{J (HYS)}
T_W
B+_(FAULT)
B+_{FAULT (HYS)}
B+ _RECOVERY
85
–
140
10
T_J -30
12
1.0
–
50
2.9
2.9
15
86
10
–
–
–
12.75
1.5
–
–
3.15
3.0
–
90
–
–
30
T_J -20
13.5
2.0
15.25
mV
V
mV
% V_{CORE_}
NOM
mV
°C
°C
°C
V
V
V
Notes
10. If any of these conditions for this not is true, then RST is activated until all operating conditions are met.
11. The RST terminal uses an external pull-up, which may be to 5.0 V or 3.3 V.
12. Guaranteed by design.
13. Alternately, the minimum B+ fault threshold voltage must not be lower than 12 V, and the B+ fault clear voltage must not be higher than
15.25 V. The hysteresis may be greater than 2.0 V if this requirement is met.
Analog Integrated Circuit Device Data
Freescale Semiconductor
34921
11