ELECTRICAL CHARACTERISTICS
(V
S
= 14V; -40
°
C < T
j
< 125°C unless otherwise specified)
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
O
Output Voltage T
J
= 25°C; I
O
= 1mA 4.95 5 5.05 V
V
O
Output Voltage 6V < V
IN
< 28V, 1mA < I
O
< 50mA 4.90 5 5.10 V
V
O
Output Voltage V
IN
= 40V;
T < 1s 5mA < I
O
< 100mA
4.75 5.25 V
V
DP
Dropout Voltage I
O
= 10mA
I
O
= 50mA
I
O
= 100mA
0.1
0.2
0.3
0.25
0.4
0.5
V
V
V
V
IO
Input to Output Voltage
Difference in Undervoltage
Condition
V
IN
= 4V, I
O
= 35mA 0.4 V
I
outh
** Max Output Leakage V
IN
= 25V, V
O
= 5.5V 20 50 80 µA
V
OL
Line Regulation 6V < V
IN
< 28V; I
O
= 1mA 20 mV
V
OLO
Load Regulation 1mA < I
O
< 100mA 30 mV
I
LIM
Current Limit V
O
= 4.5V
V
O
= 4.5V, T
J
= 25°C
V
O
= 0V (note 1)
105
120
200
100
400
400
mA
mA
mA
I
QSE
Quiescent Current I
O
= 0.3mA; T
J
< 100°C 200 300 µA
I
Q
Quiescent Current I
O
= 100mA 5 mA
** With this test we guarantee that with no output current the output voltage will not exceed 5.5V
RESET
V
RT
Reset Thereshold Voltage V
O
-0.5V V
V
RTH
Reset Thereshold Hysteresis 50 100 200 mV
t
RD
Reset Pulse Delay C
T
= 100nF; T
R
≥100µs 55 100 180 ms
V
RL
Reset Output Low Voltage R
RES
= 10KΩ to V
O
V
S
≥ 1.5V 0.4 V
I
RH
Reset Output High Leakage Current V
RES
= 5V 1 µA
V
CTth
Delay Comparator Thereshold 2 V
V
CTth, hy
Delay Comparator Thereshold
Hysteresis
100 mV
SENSE
V
st
Sense Low Thereshold 1.16 1.23 1.35 V
V
sth
Sense Thereshold Hysteresis 20 100 200 mV
V
SL
Sense Output Low Voltage V
SI
≤ 1.16V; V
S
≥ 3V
R
SO
= 10KΩ to V
O
0.4 V
I
SH
Sense Output Leakage V
SO
= 5V; V
SI
≥ 1.5V 1 µA
I
SI
Sense Input Current V
SI
= 0 -20 -8 -3 µA
PREREGULATOR
V
Z
Preregulator Output Voltage I
Z
= 10µA 4.5 5 6 V
I
Z
Preregulator Output Current 10 µA
Note 1: Foldback characteristic
L4949E
3/10
