Datasheet

IFX4949
Data Sheet 9 Rev. 1.0, 2012-05-07
4.4.2 RESET
4.4.3 Sense
Electrical Characteristics: Reset
V
IN
= 14 V, T
j
= -40 °C to +125 °C, all voltages with respect to ground, direction of current as shown in Figure 3
“Application Diagram” on Page 14 (unless otherwise specified)
Pos. Parameter Symbol Limit Values Unit Conditions
Min. Typ. Max.
4.4.13 Reset Threshold Voltage
V
RT
4.25 4.5 4.75 V –
4.4.14 Reset Threshold Hysteresis
V
RTH
50 100 200 mV –
4.4.15 Reset Pulse Delay
t
RD
55 100 180 ms Calculated Value:
C
D
= 100nF;
t
R
≥ 100µs
4.4.16 Reset Output Low Voltage
V
RL
––0.4 V R
RES
≥ 10kΩ to V
OUT
V
IN
≥ 0V and
V
OUT
≥ 1V
1)
1) Device entering this condition by decreasing V
IN
from powered up and fully initialized operation state.
4.4.17 Reset Output High Leakage
Current
I
RH
––1 µA V
RES
= 5V
4.4.18 Delay Comparator Threshold
V
D,th
–2 –V –
4.4.19 Delay Comparator Threshold
Hysteresis
V
D,th, hy
–100 –mV –
4.4.20 Delay Capacitor charge current
I
D,chg
–2–µAV
D
= 1V; current
flowing out of D pin
4.4.21 Delay Capacitor discharge current
I
D,dchg
–9–mAV
D
= 1V; current
flowing into D pin
Electrical Characteristics: Sense
V
IN
= 14 V, T
j
= -40 °C to +125 °C, all voltages with respect to ground, direction of current as shown in Figure 3
“Application Diagram” on Page 14 (unless otherwise specified)
Pos. Parameter Symbol Limit Values Unit Conditions
Min. Typ. Max.
Sense
4.4.22 Sense Low Threshold
V
ST
1.16 1.23 1.35 V –
4.4.23 Sense Threshold Hysteresis
V
STH
20 100 200 mV –
4.4.24 Sense Output Low Voltage
V
SL
– – 0.4 V V
SI
≤ 1.16V;
V
IN
≥ 3.5V;
R
SO
≥ 10KΩ to V
OUT
4.4.25 Sense Output Leakage I
SH
––1 µA V
SO
= 5V; V
SI
≥ 1.5V
4.4.26 Sense Input Current
I
SI
-5 -1.5 0 µA V
SI
= 0