TLE4678-2_15 Datasheet, PDF (19/33 Pages) Infineon Technologies AG – Low Drop Out Linear Voltage Regulator

7.2
Electrical Characteristics Reset Function
TLE4678-2
Reset Function
Table 6 Electrical Characteristics: Reset Function
V_I = 13.5 V, T_j = -40°C to +150 °C,
all voltages with respect to ground, direction of currents as shown in Figure 6 (unless otherwise specified).
Parameter
Symbol
Values
Unit Note / Test Condition Number
Min. Typ. Max.
Output Undervoltage Reset Comparator Default Values (Pin RADJ = GND)
Output Undervoltage Reset
Lower Switching Threshold
V_RT,lo
4.6 4.7 4.8 V
V_I = 0 VV_Q decreasing P_7.2.1
RADJ = GND
Output Undervoltage Reset
Upper Switching Threshold
V_RT,hi
4.7 4.8 4.9 V
V_I within operating
rangeV_Q increasing
RADJ = GND
P_7.2.2
Output Undervoltage Reset V_RT,hy
60
120 –
Switching Hysteresis
mV V_I within operating range P_7.2.3
RADJ = GND.
Output Undervoltage Reset V_RH
Headroom
250 300 –
mV Calculated Value:V_Q - P_7.2.4
V_RT,lo V_I within operating
rangeI_Q = 50 mA
RADJ = GND
Reset Threshold Adjustment
Reset Adjust
Lower Switching Threshold
Reset Adjustment Range ¹⁾
Reset Output RO
V_RADJ,th 1.176 1.20 1.224 V
V_RT,range 3.20 –
4.60 V
V_I = 0 V
3.2 V ≤V_Q < 4.6 V
–
P_7.2.5
P_7.2.6
Reset Output Low Voltage
V_RO,low
–
Reset Output
R_RO,ext
3
External Pull-up Resistor to Q
Reset Output
Internal Pull-up Resistor
R_RO
20
0.2 0.4 V
V_I = 0 V;
1 V ≤ V_Q ≤ V_RT,low
R_RO,ext = 3.3 kΩ
–
–
kΩ V_I = 0 V;
1 V ≤ V_Q ≤ V_RT,low
V_RO = 0.4 V
30 45 kΩ internally connected
to Q
P_7.2.8
P_7.2.9
P_7.2.10
Reset Delay Timing
Upper Delay
Switching Threshold
V_DST,hi
–
1.21 –
V
–
P_7.2.11
Lower Delay
Switching Threshold
V_DST,lo
–
0.30 –
V
–
P_7.2.12
Delay Capacitor
Charge Current
I_D,ch
–
2.8 –
µA V_D = 1 V
P_7.2.13
Delay Capacitor
Reset Discharge Current
I_DR,dsch
–
80 –
mA V_D = 1 V
P_7.2.14
Undervoltage Reset Delay
Time
t_d,100nF
20
31 45 ms Calculated value;
P_7.2.15
C_D = 100 nF ²⁾;
C_D discharged to V_DST,lo
Data Sheet
19
Rev. 1.0, 2014-03-03