Datasheet

Electrical specifications L4949ED-E, L4949EP-E
8/19 Doc ID 16823 Rev 2
2.3 Electrical characteristics
V
S
= 14 V; -40 °C < T
j
< 125 °C unless otherwise specified
Table 5. Electrical characteristics
Symbol Parameter Test condition Min. Typ. Max. Unit
V
O
Output voltage T
J
= 25 °C; I
O
= 1 mA 4.95 5 5.05 V
V
O
Output voltage 6 V < V
IN
< 28 V, 1 mA < I
O
< 50 mA 4.90 5 5.10 V
V
O
Output voltage
V
IN
= 40 V;
T < 1s; 5mA < I
O
< 100 mA
4.75 5.25 V
V
DP
Dropout voltage
I
O
= 10 mA
I
O
= 50 mA
I
O
= 100 mA
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
= 4 V, I
O
= 35 mA 0.4 V
I
outh
(1)
Max output leakage V
IN
= 25 V, V
O
= 5.5 V 20 50 80 µA
V
OL
Line regulation 6 V < V
IN
< 28 V; I
O
= 1 mA 20 mV
V
OLO
Load regulation 1 mA < I
O
< 100 mA 30 mV
I
LIM
Current limit
V
O
= 4.5 V
V
O
= 4.5 V; T
J
= 25 °C
V
O
= 0 V
(2)
105
120
200
100
400
400
mA
mA
mA
I
QSE
Quiescent current I
O
= 0.3 mA; T
J
< 100 °C 200 300 µA
I
Q
Quiescent current I
O
= 100 mA 5 mA
1. With this test we guarantee that with no output current the output voltage will not exceed 5.5V
2. Foldback characteristic
Table 6. Reset
Symbol Parameter Test condition Min. Typ. Max. Unit
V
RT
Reset threshold voltage
VO -
0.5V
V
V
RTH
Reset threshold hysteresis 50 100 200 mV
t
RD
Reset pulse delay C
T
= 100 nF; T
R
≥ 100 µs 55 100 180 ms
V
RL
Reset output low voltage R
RES
= 10 KΩ to V
O
V
S
≥ 1.5V 0.4 V
I
RH
Reset output high leakage
current
V
RES
= 5 V 1 µA
V
CTth
Delay comparator threshold 2 V
V
CTth, hy
Delay comparator threshold
hysteresis
100 mV