spx2954am3-l-5-0-tr Exar Corporation, spx2954am3-l-5-0-tr Datasheet - Page 6

• Manufacturer Part Number: spx2954am3-l-5-0-tr
• Description: 250ma Low Dropout Voltage Regulator
• Manufacturer: Exar Corporation

Drop-Out Voltage
Output Impedance
Error Comparator Output
Date: 12/9/05
TYPICAL PERFORMANCE CHARACTERISTICS
0.05
0.02
0.01
10
0.5
0.2
0.1
8
6
500
200
5
2
1
400
300
4
2
0
-2
40
20
0
10
-75 -50 -25
0
~
~
I
O
I
100
O
= 100µA
1
= 1mA
INPUT VOLTAGE (V)
SEPARATE 5V SUPPLY
PULLUP RESISTOR TO
TEMPERATURE (ºC)
FREQUENCY (Hz)
HYSTERESIS
0
1K
2
V
OUT
25 50
= 5V
10K
3
I
V
O
C
OUT
75 100 125 150
L
= 100mA
I
I
= 1µF
L
L
100K
= 5V
= 150mA
= 100µA
4
5
1M
SPX2954, 250mA Low Dropout Voltage Regulator
Drop-Out Voltage
Ripple Rejection
Comparator Sink Current
500
400
300
200
100
40
90
80
50
20
70
60
30
2.5
2.0
1.5
1.0
0.5
0.0
0
10
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
100µA
1
C
V
V
L
OUT
T
IN
= 1µF
J
= 6V
= 25ºC
OUTPUT LOW VOLTAGE (V)
10
= 5V
2
OUTPUT CURRENT
FREQUENCY (Hz)
1mA
10
6
3
10
I
L
= 0
4
10mA
T
T
T
(CONT.)
I
L
A
A
A
= 100µA
= 125ºC
= -55ºC
= 25ºC
10
5
100mA
10
6
Line Transient Response
Short Circuit Current
Ripple Rejection
240
220
200
180
230
210
190
170
90
80
70
60
50
40
30
20
mV
-75 -50 -25
100
mV
50
-50
mV
8V
6V
4V
10
0
1
~ ~
I
© Copyright 2005 Sipex Corporation
L
= 1mA
0
10
2
TEMPERATURE (ºC)
FREQUENCY (Hz)
0
I
200
L
10
= 10mA
3
25 50
TIME(µs)
400
10
4
75 100 125 150
C
V
V
V
C
I
L
OUT
IN
L
OUT
= 1µF
L
= 1mA
600
= 6V
= 1µF
= 5V
10
= 5V
5
800
10
6