LP2950-xx/LP2951-xx
TYPICAL PERFORMANCE CHARACTERISTICS
(Continued)
Load Transient Response
250
200
150
100
50
0
-50
-100
80
60
40
20
0
-20
-40
-60
OUTPUT VOLTAGE
CHANGE (mV)
OUTPUT VOLTAGE
CHANGE (mV)
Load Transient Response
OUTPUT
VOLTAGE (V)
7
6
5
4
3
2
1
0
2
LP2951 Enable Transient
C
L
= 1
μF
C
L
= 10
μF
V
OUT
= 5V
C
L
= 10
μF
I
L
= 10 mA
V
IN
= 8V
V
OUT
= 5V
LOAD
CURRENT
LOAD
CURRENT
~
~
100
mA
100
μA
0
1
2
3
TIME (ms)
~
~
100
mA
100
μA
0
4
8
12
TIME (ms)
16
20
SHUTDOWN PIN
VOLTAGE (V)
RIPPLE REJECTION (dB)
C
L
= 1
μF
V
OUT
= 5V
~
~
4
5
0
-2
-100 0 100 200 300 400 500 600 700
TIME (μs)
Output Impedance
10
5
Ω)
OUPUT IMPEDANCE (
2
1
0.5
0.2
0.1
0.05
0.02
0.01
V
OUT
= 5V
C
L
= 1
μF
Ripple Rejection
90
90
80
70
60
50
40
30
Ripple Rejection
I
O
= 100μA
RIPPLE REJECTION (dB)
80
70
60
50
40
30
20
10
1
C
L
= 1
μF
V
IN
= 6V
V
OUT
= 5V
I
L
= 100μA
I
L
= 0
I
O
= 100mA
I
O
= 1 mA
I
L
= 1mA
C
L
= 1
μF
V
IN
= 6V
V
OUT
= 5V
I
L
= 10mA
10
100
1K
10K 100K
FREQUENCY (Hz)
1M
10
2
10
5
10
3
10
4
FREQUENCY (Hz)
10
6
20
10
1
10
2
10
5
10
3
10
4
FREQUENCY (Hz)
10
6
Ripple Rejection
80
RIPPLE REJECTION (dB)
70
60
50
40
30
20
10
10
1
10
2
10
5
10
3
10
4
FREQUENCY (Hz)
10
6
C
L
= 1μF
V
IN
= 6V
V
OUT
= 5V
LP2951 Output Noise
3.5
VOLTAGE NOISE SPECTRAL
DENSITY(mV/√Hz)
400
5V OUTPUT
I
L
= 100mA
LP2951 Divider Resistance
PIN 2 TO PIN 4 RESISTANCE (kΩ)
10
5
I
L
= 50mA
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.01
μF
BYPASS
PIN 1 TO
PIN 7
C
L
= 3.3
μF
C
L
= 220
μF
C
L
= 1
μF
I
L
= 100mA
300
200
100
10
2
10
3
10
4
FREQUENCY (Hz)
0
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE (° C)
:
ADD.: RM. 4004,
88
BLOCK B,
B
4004
,
:210008
(TEL.): (86)-25-68853600
(FAX): (86)-25-68853600-810
WEB-SITE: WWW.HN-ELEC.COM
NEW WORLD CENTRE,
NO. 88 ZHUJIANG ROAD,
6
NANJING 210008,
CHINA
HN [ NANJING HONANO ELECTRONIC CO., LTD. ]
