300MA HIGH PSRR LOW DROPOUT CMOS LINEAR REGULATOR
FSP2131
(V
IN
= V
O
+ 1V, C
IN
= 1µF, C
O
= 2.2µF, T
A
= 25
°
C unless otherwise specified.)
PARAMETER
Input Voltage
Output Voltage Accuracy
Output Current
Ground Current
Quiescent Current
SYMBOL
V
IN
V
O
I
O
I
GND
I
Q
TEST CONDITIONS
I
O
= 1mA
I
O
= 1mA to 300mA
I
O
= 0mA
I
O
= 1mA, V
O
<
2V
V
IN
=2.8V to 3.8V
I
O
= 1mA, 2≤ V
O
<
3.3V
V
IN
=V
O
+ 0.5V to V
O
+ 1V
I
O
= 1mA, V
O
≥3.3V
V
IN
=V
O
+ 0.5V to V
O
+ 1V
I
O
= 1mA to 300mA
I
O
= 1mA
I
O
= 1mA
I
O
= 1mA
I
O
= 100mA
f=100Hz
C
BYP
= 10nF
f= 1KHz
V
o
=1.8V
f= 10KHz
I
O
= 100mA
V
o
=1.8V
f=100Hz
f= 1KHz
f= 10KHz
V
O
= 1.8V
2.5
≤
V
O
<
3.3V
V
O
≥
3.3V
MIN
Note1
-2
300
70
65
-0.15
-0.1
-0.4
-1
0.1
0.03
0.2
0.2
40
150
30
70
70
50
70
60
40
850
370
180
50
TYP
MAX
5.5
+2
Note2
90
90
0.15
0.1
0.4
1
%
ppm/°C
°C
°C
%/V
UNIT
V
%
mA
µA
µA
ELECTRICAL CHARACTERISTICS
Line Regulation
LNR
Load Regulation Error
Temperature Coefficient
Over Temperature Shutdown
Over Temperature Hystersis
Power Supply Ripple Rejection
(with bypass Cap.)
Power Supply Ripple Rejection
(without bypass Cap.)
LDR
T
C
OTS
OTH
PSRR
dB
PSRR
Dropout Voltage
Output Noise
V
DO
V
n
I
O
= 300mA
1100
450
230
mV
µV
RMS
C
BYP
=10nF, f = 10Hz to 100kHz
Note 1：The minimum input voltage of the FSP2131 is determined by output voltage and dropout voltage. The
minimum input voltage is defined as:
V
IN(MIN)
=V
O
+V
DROP
Note 2：Output current is limited by P
D
, maximum I
O
=P
D
/(V
IN(MAX)
-V
O
)
3/11
2007-4-19
FOSLINK [ FOSLINK SEMICONDUCTOR CO.,LTD ]
