LT1158
TYPICAL PERFORMANCE CHARACTERISTICS
DC Supply Current
DC Supply Current
Dynamic Supply Current (V+)
14
12
14
12
30
25
20
15
10
5
I
+ I + I
10 16
2
50% DUTY CYCLE
V13 = 0V
INPUT HIGH
I
2
+ I + I
10 16
+
V
= 12V
C
GATE
= 3000pF
+
V13 = V
INPUT HIGH
INPUT LOW
10
8
10
+
INPUT LOW
V
= 24V
8
6
4
2
+
V
= 12V
6
+
V
= 6V
4
ENABLE LOW
ENABLE LOW
2
0
0
0
10
20
SUPPLY VOLTAGE (V)
35 40
50
TEMPERATURE (°C)
100 125
0
5
15
25 30
–50 –25
0
25
75
1
10
INPUT FREQUENCY (kHz)
100
LT1158 G01
LT1158 G02
LT1158 G03
Dynamic Supply Current
Charge Pump Output Voltage
Input Thresholds
40
35
30
25
20
15
10
5
50
45
40
35
30
25
20
15
10
5
2.0
1.8
1.6
1.4
1.2
1.0
0.8
50% DUTY CYCLE
+
V
= 12V
V(HIGH)
–40°C
+25°C
+85°C
NO LOAD
C
GATE
= 10000pF
–40°C
+25°C
+85°C
C
GATE
= 3000pF
10μA LOAD
V(LOW)
C
GATE
= 1000pF
0
0
1
10
INPUT FREQUENCY (kHz)
100
30
SUPPLY VOLTAGE (V)
0
5
10
20 25
35 40
0
20
30 35
15
5
10 15
25
40
SUPPLY VOLTAGE (V)
LT1158 G04
LT1158 G06
LT1158 G05
Enable Thresholds
Fault Conduction Threshold
Current Limit Threshold
3.5
3.0
160
150
140
130
120
110
100
90
200
190
180
170
160
150
140
130
120
110
100
CLOSED LOOP
V11 = 0V
V(HIGH)
–40°C
+85°C
+25°C
2.5
2.0
1.5
1.0
0.5
+85°C
+25°C
+85°C
+25°C
–40°C
–40°C
+85°C
–40°C
+25°C
V(LOW)
80
70
0
60
10
20
35 40
0
5
15
25 30
0
20
30 35
0
20
30 35
5
10 15
25
40
5
10 15
25
40
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
LT1158 G07
LT1158 G08
LT1158 G09
1158fb
4
LINEAR_DIMENSIONS [ Linear Dimensions ]
