LT1965
TYPICAL PERFORMANCE CHARACTERISTICS
Reverse Output Current
6
REVERSE OUTPUT CURRENT (mA)
5
4
3
2
1
0
0
2
4
6
8
OUTPUT VOLTAGE (V)
10
1965 G16
Reverse Output Current
0.50
REVERSE OUTPUT CURRENT (mA)
0.45
0.40
RIPPLE REJECTION (dB)
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
–50
–25
0
25
50
75
TEMPERATURE (°C)
100
125
V
IN
= 0V
V
OUT
= 1.2V
90
80
70
60
50
40
30
Ripple Rejection vs Frequency
T
J
= 25°C
V
IN
= 0V
CURRENT FLOWS INTO
OUTPUT PIN
V
OUT
= V
ADJ
20 I
L
= 0.75A
C
OUT
= 10μF CERAMIC
10 V
IN
= V
OUT(NOMINAL)
+ 1V + 50mV
RMS
RIPPLE
0
100
10
1k
10k
FREQUENCY (Hz)
100k
1M
1965 G18
1965 G17
Ripple Rejection vs Temperature
100
2.5
Minimum Input Voltage
0
–2
MINIMUM INPUT VOLTAGE (V)
LOAD REGULATION (mV)
Load Regulation
V
IN
= 2.3V
ΔI
L
= 1mA TO 1.1A
RIPPLE REJECTION (dB)
90
2.0
I
L
= 1.1A
1.5
I
L
= 500mA
I
L
= 100mA
1.0
–4
–6
–8
–10
–12
–14
80
70
I
L
= 0.75A
V
IN
= V
OUT(NOMINAL)
+ 1V + 0.5
P-P
RIPPLE AT f = 120Hz
60
–50
–25
0
25
50
75
TEMPERATURE (°C)
100
125
0.5
0
–50
–25
0
25
50
75
TEMPERATURE (°C)
100
125
–16
–50
–25
0
25
50
75
TEMPERATURE (°C)
100
125
1965 G19
1965 G20
1965 G21
Output Noise Spectral Density
OUTPUT NOISE SPECTRAL DENSITY (μV Hz)
1.00
OUTPUT NOISE VOLTAGE (μV
RMS
)
C
OUT
= 10μF
I
L
= 1.1A
80
RMS Output Noise vs Load
Current (10Hz to 100kHz)
C
OUT
= 10μF
70 I
L
= 1.1A
60
50
V
OUT
= 2.5V
40
30
20
10
0
0.0001
0.001
V
OUT
= 1.5V
V
OUT
= 1.8V
V
OUT
= 3.3V
1.8V 10Hz to 100kHz
Output Noise
C
OUT
= 10μF
I
L
= 1.1A
V
OUT
= 2.5V
0.10
V
OUT
= 1.8V
V
OUT
= 1.5V
V
OUT
= 3.3V
V
OUT
100μV/DIV
V
OUT
= 1.2V
V
OUT
= 1.2V
400μs/DIV
1965 G24
0.01
10
100
1k
FREQUENCY (Hz)
10k
100k
1965 G22
0.01
0.1
LOAD CURRENT (A)
1
10
1965 G23
1965f
6
LINER [ LINEAR TECHNOLOGY ]
