Datasheet

LT3012
7
3012fd
TYPICAL PERFORMANCE CHARACTERISTICS
Input Ripple Rejection Input Ripple Rejection Minimum Input Voltage
Output Noise Spectral Density
10Hz to 100kHz Output Noise Transient Response
Load Regulation
TEMPERATURE (°C)
60
RIPPLE REJECTION (dB)
68
92
80
84
88
3012 G19
64
76
72
–50 0
50
75
–25
25
100
150125
V
IN
= 4.75V + 0.5V
P-P
RIPPLE AT f = 120Hz
I
L
= 250mA
V
OUT
= 1.24V
TEMPERATURE (°C)
MINIMUM INPUT VOLTAGE (V)
4.0
3012 G21
2.0
1.0
0.5
0
5.0
3.5
4.5
3.0
2.5
1.5
–50 0
50
75
–25
25
100
150125
I
LOAD
= 250mA
FREQUENCY (Hz)
10
40
RIPPLE REJECTION (dB)
50
60
70
80
100 1k 10k 100k 1M
3012 G20
30
20
10
0
90
100
V
IN
= 4.75V + 50mV
RMS
RIPPLE
I
LOAD
= 250mA
C
OUT
= 10μF
C
OUT
= 3.3μF
TEMPERATURE (°C)
LOAD REGULATION (mV)
–4
–2
3012 G22
–12
–16
–18
–20
0
–8
–6
–10
–14
–50 0
50
75
–25
25
100
150125
ΔI
L
= 1mA TO 250mA
FREQUENCY (Hz)
0.1
OUTPUT NOISE SPECTRAL DENSITY (μV/√Hz)
1
10 1k 10k 100k
3012 G23
0.01
100
10
C
OUT
= 3.3μF
I
LOAD
= 250mA
V
OUT
100μV/DIV
C
OUT
= 10μF
I
L
= 250mA
V
OUT
= 1.24V
1ms/DIV
3012 G24
TIME (μs)
0
OUTPUT VOLTAGE
DEVIATION (V)LOAD CURRENT (mA)
–0.05
0.05
400
3012 G25
100
–0.10
–0.15
0
0.10
0.15
200
300
0
100
200
300
500
V
IN
= 6V
V
OUT
= 5V
C
IN
= 3.3μF CERAMIC
C
OUT
= 3.3μF CERAMIC
ΔI
LOAD
= 100mA TO 200mA