tle4678 Infineon Technologies Corporation, tle4678 Datasheet - Page 18

• Manufacturer Part Number: tle4678
• Description: Low Drop Out Linear Voltage Regulator 5 V Fixed Output Voltage
• Manufacturer: Infineon Technologies Corporation

7.2
Electrical Characteristics: Reset Function
V
all voltages with respect to ground, direction of currents as shown in
Pos.
Output Undervoltage Reset Comparator Default Values (Pin RADJ = GND)
7.2.1
7.2.2
7.2.3
7.2.4
Reset Threshold Adjustment
7.2.5
7.2.6
Reset Output RO
7.2.7
7.2.8
7.2.9
Reset Delay Timing
7.2.10
7.2.11
7.2.12
7.2.13
7.2.14
Datasheet
I
= 13.5 V,
Parameter
Output Undervoltage Reset
Lower Switching Threshold
Output Undervoltage Reset
Upper Switching Threshold
Output Undervoltage Reset
Switching Hysteresis
Output Undervoltage Reset
Headroom
Reset Adjust
Lower Switching Threshold
Reset Adjustment Range
Reset Output Low Voltage
Reset Output
External Pull-up Resistor
to Q
Reset Output
Internal Pull-up Resistor
Upper Delay
Switching Threshold
Lower Delay
Switching Threshold
Delay Capacitor
Charge Current
Delay Capacitor
Reset Discharge Current
Undervoltage Reset Delay
Time
T
Electrical Characteristics Reset Function
j
= -40 C to +150 C,
1)
Symbol
V
V
V
V
V
V
V
R
R
V
V
I
I
t
d,100nF
D,ch
DR,dsch
RT,lo
RT,hi
RT,hy
RH
RADJ,th
RT,range
RO,low
RO,ext
RO
DST,hi
DST,lo
Min.
4.6
4.7
60
250
1.176
3.20
–
3
20
–
–
–
–
23
18
Limit Values
Typ.
4.7
4.8
120
300
1.20
–
0.2
–
30
1.21
0.30
2.8
80
31
Figure 6
Max.
4.8
4.9
–
–
1.224
4.70
0.4
–
40
–
–
–
–
41
(unless otherwise specified).
Unit
V
V
mV
mV
V
V
V
k
k
V
V
mA
ms
A
Conditions
V
V
RADJ = GND
V
V
RADJ = GND
V
RADJ = GND.
Calculated Value:
V
V
I
RADJ = GND
V
3.2 V
–
V
1 V
R
V
1 V
V
internally connected
to Q
–
–
V
V
Calculated value;
C
C
Q
I
Q
I
Q
I
Q
I
I
I
RO,ext
I
RO
D
D
D
D
within operating range
within operating range
within operating range
= 0 V
= 50 mA
= 0 V
= 0 V;
= 0 V;
= 1 V
= 1 V
decreasing
increasing
-
= 100 nF
discharged to
Rev. 1.0, 2008-07-31
= 0.4 V
V
V
V
RT,lo
= 3.3 k
Q
Q
V
Reset Function
Q
< 5 V
V
V
RT,low
RT,low
2)
TLE4678
;
V
DST,lo