Datasheet

5
LT3012B
3012bf
TEMPERATURE (°C)
–50
ADJ PIN BIAS CURRENT (nA)
45
25
3012B G13
25
20
–25 0 50
5
10
15
0
50
40
35
30
75 100 125
INPUT VOLTAGE (V)
0
CURRENT LIMIT (mA)
600
800
1000
3012B G14
400
200
500
700
900
300
100
0
2010
4030
60 70
50
80
T
J
= 25°C
T
J
= 125°C
V
OUT
= 0V
TEMPERATURE (°C)
–50
0
CURRENT LIMIT (mA)
0
50
75
3012B G15
–25
25
100
125
V
IN
= 7V
V
OUT
= 0V
600
400
200
500
700
300
100
OUTPUT VOLTAGE (V)
0
REVERSE OUTPUT CURRENT (µA)
120
160
200
8
3012B G16
80
40
100
140
180
60
20
0
21
43
67 9
5
10
T
J
= 25°C
V
IN
= 0V
V
OUT
= V
ADJ
CURRENT FLOWS
INTO OUTPUT PIN
ADJ
PIN CLAMP
(SEE APPLICATIONS
INFORMATION)
TEMPERATURE (°C)
–50
REVERSE OUTPUT CURRENT (µA)
25
3012B G17
20
10
–25 0 50
5
0
35
30
25
15
75 100 125
V
IN
= 0V
V
OUT
= V
ADJ
= 1.24V
TEMPERATURE (°C)
–50
60
RIPPLE REJECTION (dB)
68
92
80
84
88
0
50
75
3012B G18
64
76
72
–25
25
100
125
V
IN
= 4.5V + 0.5V
P-P
RIPPLE AT f = 120Hz
I
L
= 250mA
V
OUT
= 1.24V
TYPICAL PERFOR A CE CHARACTERISTICS
UW
ADJ Pin Bias Current
Current Limit
Reverse Output Current
Current Limit
Input Ripple RejectionReverse Output Current
TEMPERATURE (°C)
–50
MINIMUM INPUT VOLTAGE (V)
3.5
25
3012B G20
2.0
1.0
–25 0 50
0.5
0
4.0
3.0
2.5
1.5
75 100 125
I
LOAD
= 250mA
FREQUENCY (Hz)
10
40
RIPPLE REJECTION (dB)
50
60
70
80
100 1k 10k 100k 1M
3012B G19
30
20
10
0
90
100
V
IN
= 4.5V + 50mV
RMS
RIPPLE
I
LOAD
= 250mA
C
OUT
= 10µF
C
OUT
= 3.3µF
Minimum Input Voltage
Input Ripple Rejection