Datasheet

7
LT1762 Series
1762fa
TYPICAL PERFORMANCE CHARACTERISTICS
UW
SHDN Pin Input Current
SHDN PIN VOLTAGE (V)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
SHDN PIN INPUT CURRENT (µA)
1762 G28
0123
4
5
678910
TEMPERATURE (°C)
–50 100
1762 G29
050
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–25 25 75 125
SHDN PIN INPUT CURRENT (mA)
V
SHDN
= 20V
TEMPERATURE (°C)
–50
ADJ PIN BIAS CURRENT (nA)
0
50
75
1762 G30
–25
25
100
125
140
120
100
80
60
40
20
0
500
450
400
350
300
250
200
150
100
50
0
INPUT VOLTAGE (V)
0
SHORT-CIRCUIT CURRENT (mA)
2
4
5
1762 G31
1
3
6
7
V
OUT
= 0V
500
450
400
350
300
250
200
150
100
50
0
SHORT-CIRCUIT CURRENT (mA)
1762 G32
V
IN
= 7V
V
OUT
= 0V
TEMPERATURE (°C)
–50 0
50
75
–25
25
100
125
OUTPUT VOLTAGE (V)
100
90
80
70
60
50
40
30
20
10
0
REVERSE OUTPUT CURRENT (µA)
1762 G33
0123
4
5
678910
T
J
= 25°C, V
IN
= 0V
CURRENT FLOWS
INTO OUTPUT PIN
V
OUT
= V
SENSE
(LT1762-2.5/-3/-3.3/-5)
V
OUT
= V
ADJ
(LT1762)
LT1762
LT1762-5
LT1762-3
LT1762-2.5
LT1762-3.3
TEMPERATURE (°C)
–50
REVERSE OUTPUT CURRENT (µA)
30
25
20
15
10
5
0
0
50
75
1762 G34
–25
25
100
125
V
IN
= 0V
V
OUT
= 1.22V (LT1762)
V
OUT
= 2.5V (LT1762-2.5)
V
OUT
= 3V (LT1762-3)
V
OUT
= 3.3V (LT1762-3.3)
V
OUT
= 5V (LT1762-5)
LT1762
LT1762-2.5/-3/-3.3/-5
FREQUENCY (Hz)
RIPPLE REJECTION (dB)
80
70
60
50
40
30
20
10
0
10 1k 10k 1M
1762 G35
100 100k
I
L
= 150mA
V
IN
= V
OUT(NOMINAL)
+
1V + 50mV
RMS
RIPPLE
C
BYP
= 0
C
OUT
= 2.2µF
C
OUT
= 10µF
FREQUENCY (Hz)
RIPPLE REJECTION (dB)
80
70
60
50
40
30
20
10
0
10 1k 10k 1M
1762 G36
100 100k
I
L
= 150mA
V
IN
= V
OUT(NOMINAL)
+
1V + 50mV
RMS
RIPPLE
C
OUT
= 10µF
C
BYP
= 0.01µF
C
BYP
= 100pF
C
BYP
= 1000pF
SHDN Pin Input Current ADJ Pin Bias Current
Current Limit Current Limit Reverse Output Current
Reverse Output Current Input Ripple Rejection Input Ripple Rejection