LT1764 Series
TYPICAL PERFOR A CE CHARACTERISTICS
LT1764-3.3 GND Pin Current
200
T
J
= 25°C
V
SHDN
= V
IN
*FOR V
OUT
= 3.3V
150
160
GND PIN CURRENT (mA)
GND PIN CURRENT (mA)
GND PIN CURRENT (mA)
120
R
L
= 1.1Ω
I
L
= 3A*
80
R
L
= 2.2Ω
I
L
= 1.5A*
40
R
L
= 4.71Ω
I
L
= 0.7A*
0
0
1
2
3 4 5 6 7
INPUT VOLTAGE (V)
SHDN Pin Threshold
(On-to-Off)
1.0
0.9
SHDN PIN THRESHOLD (V)
I
L
= 1mA
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–50 –25
50
25
0
75
TEMPERATURE (°C)
100
125
SHDN PIN THRESHOLD (V)
0.8
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–50 –25
I
L
= 3A
SHDN PIN INPUT CURRENT (µA)
SHDN Pin Input Current
10
9
V
SHDN
= 20V
SHDN PIN INPUT CURRENT (µA)
ADJ PIN BIAS CURRENT (µA)
8
7
6
5
4
3
2
1
0
–50 –25
50
25
0
75
TEMPERATURE (°C)
100
125
CURRENT LIMIT (A)
U W
8
9
1764 G19
LT1764 GND Pin Current
T
J
= 25°C
V
SHDN
= V
IN
*FOR V
OUT
= 1.21V
R
L
= 0.4Ω
I
L
= 3A*
90
R
L
= 0.81Ω
I
L
= 1.5A*
160
140
120
100
80
60
40
20
10
0
0
1
2
3 4 5 6 7
INPUT VOLTAGE (V)
8
9
10
0
GND Pin Current vs I
LOAD
V
IN
= V
OUT(NOM)
+ 1V
120
60
R
L
= 1.73Ω
I
L
= 0.7A*
30
0
0.5
2.0
1.5
OUTPUT CURRENT (A)
1.0
2.5
3.0
1764 G21
1764 G20
SHDN Pin Threshold
(Off-to-On)
1.0
0.9
SHDN Pin Input Current
10
9
8
7
6
5
4
3
2
1
0
I
L
= 1mA
50
25
0
75
TEMPERATURE (°C)
100
125
0
2
4
6 8 10 12 14 16 18 20
SHDN PIN VOLTAGE (V)
1764 G24
1764 G22
1764 G23
ADJ Pin Bias Current
4.0
3.5
3.0
2.5
2.0
1.5
1.0
Current Limit
6
5
T
J
= –50°C
4
3
2
1
T
J
= 125°C
T
J
= 25°C
0.5
0
– 50 – 25
0
0
75
50
25
TEMPERATURE (°C)
100
125
0
2
4 6 8 10 12 14 16 18 20
INPUT/OUTPUT DIFFERENTIAL (V)
1764 G27
1764 G25
1756 G26
1764fb
7
LINEAR_DIMENSIONS [ LINEAR DIMENSIONS SEMICONDUCTOR ]
