TLE4678_15 Datasheet, PDF (21/37 Pages) Infineon Technologies AG – Low Drop Out Linear Voltage Regulator

TLE4678
Reset Function
7.2
Electrical Characteristics Reset Function
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 7 (unless otherwise specified).
Parameter
Symbol
Limit Values
Unit Conditions
Number
Min. Typ. Max.
Output Undervoltage Reset Comparator Default Values (Pin RADJ = GND)
Output Undervoltage Reset V_RT,lo 4.6 4.7 4.8 V
Lower Switching Threshold
V_I = 0 V
V_Q decreasing
RADJ = GND
7.2.1
Output Undervoltage Reset V_RT,hi 4.7 4.8 4.9 V
Upper Switching Threshold
V_I within operating
range
V_Q increasing
RADJ = GND
7.2.2
Output Undervoltage Reset V_RT,hy 60
Switching Hysteresis
120 –
mV V_I within operating
range
RADJ = GND.
7.2.3
Output Undervoltage Reset V_RH
Headroom
250 300 –
mV Calculated Value:
V_Q - V_RT,lo
V_I within operating
range
I_Q = 50 mA
RADJ = GND
7.2.4
Reset Threshold Adjustment
Reset Adjust
Lower Switching Threshold
Lower Reset Threshold
Adjustment Range ¹⁾
V_RADJ,th 1.176 1.20
V_RT,adj 3.20 –
1.224 V
V_RT,lo V
V_I = 0 V
3.2 V ≤ V_Q < 5 V
–
7.2.5
7.2.6
Reset Output RO
Reset Output Low Voltage
V_RO,low –
Reset Output
R_RO,ext
3
External Pull-up Resistor to Q
Reset Output
R_RO
20
Internal Pull-up Resistor
0.2 0.4 V
V_I = 0 V;
R_RO,ext = 3.3 kΩ;
1 V ≤ V_Q ≤ V_RT,low
7.2.7
–
–
kΩ V_I = 0 V;
V_RO = 0.4 V
1 V ≤ V_Q ≤ V_RT,low
7.2.8
30 40 kΩ internally connected ^7.2.9
to Q
Reset Delay Timing
Upper Delay
Switching Threshold
Lower Delay
Switching Threshold
V_DST,hi
–
1.21 –
V
–
V_DST,lo
–
0.30 –
V
–
7.2.10
7.2.11
Datasheet
21
Rev. 1.2, 2014-10-17