
LFxxAB - LFxxC
Electrical characteristics
11/45
Electrical characteristics for LF25C
(refer to the test circuits, T
J
= 25°C, C
I
= 0.1 μF,
C
O
= 2.2
μ
F unless otherwise specified.)
Parameter
Test conditions
Table 9.
Symbol
Min.
Typ.
Max.
Unit
V
O
Output voltage
I
O
= 50 mA, V
I
= 4.5 V
I
O
= 50 mA, V
I
= 4.5 V, T
a
= -25 to 85°C
2.45
2.5
2.55
V
2.4
2.6
V
I
Operating input voltage
I
O
= 500 mA
16
V
I
O
Output current limit
1
A
Δ
V
O
Δ
V
O
Line regulation
V
I
= 3.5 to 16 V, I
O
= 5 mA
V
I
= 3.8 V, I
O
= 5 to 500 mA
V
I
= 3.5 to 16V, I
O
= 0mA
V
I
= 3.8 to 16V, I
O
=500mA
V
I
= 6 V
2
12
mV
Load regulation
2
12
mV
I
d
Quiescent current
ON MODE
0.5
1
mA
12
OFF MODE
50
100
μA
SVR
Supply voltage rejection
I
O
= 5 mA, V
I
= 4.5 ± 1 V
f = 120 Hz
82
dB
f = 1 KHz
77
f = 10 KHz
65
eN
Output noise voltage
B = 10 Hz to 100 KHz
50
μV
V
d
Dropout voltage
I
O
= 200 mA
0.2
0.35
V
I
O
= 500 mA
0.4
0.7
V
IL
Control input logic low
T
a
= -40 to 125°C
0.8
V
V
IH
Control input logic high
T
a
= -40 to 125°C
V
I
= 6 V, V
C
= 6 V
2
V
I
I
Control input current
10
μA
C
O
Output bypass
capacitance
ESR = 0.1 to 10
Ω
, I
O
= 0 to 500 mA
2
10
μF