Datasheet

LT1158
4
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TYPICAL PERFORMANCE CHARACTERISTICS
Dynamic Supply Current Charge Pump Output Voltage Input Thresholds
Enable Thresholds Fault Conduction Threshold Current Limit Threshold
DC Supply Current DC Supply Current Dynamic Supply Current (V
+
)
SUPPLY VOLTAGE (V)
0
8
10
12
30
LT1158 G01
6
4
10 20 40
2
0
14
I
2
+ I
10
+ I
16
ENABLE LOW
SUPPLY CURRENT (mA)
51525
35
INPUT LOW
INPUT HIGH
V13 = 0V
V13 = V
+
TEMPERATURE (°C)
–50
8
10
14
25 75
LT1158 G02
6
4
–25 0
50 100 125
2
0
12
SUPPLY CURRENT (mA)
I
2
+ I
10
+ I
16
V
+
= 12V
INPUT HIGH
INPUT LOW
ENABLE LOW
INPUT FREQUENCY (kHz)
1
0
SUPPLY CURRENT (mA)
5
10
15
20
30
10 100
LT1158 G03
25
50% DUTY CYCLE
C
GATE
= 3000pF
V
+
= 24V
V
+
= 6V
V
+
= 12V
INPUT FREQUENCY (kHz)
1
0
SUPPLY CURRENT (mA)
5
10
15
20
40
10 100
LT1158 G04
25
30
35
C
GATE
= 10000pF
50% DUTY CYCLE
V
+
= 12V
C
GATE
= 1000pF
C
GATE
= 3000pF
SUPPLY VOLTAGE (V)
0
0
TOP GATE VOLTAGE (V)
5
15
20
25
50
35
10
20
25
LT1158 G05
10
40
45
30
515
30
35
40
10μA LOAD
NO LOAD
SUPPLY VOLTAGE (V)
0
0.8
INPUT THRESHOLD VOLTAGE (V)
1.0
1.2
1.4
1.6
10 20
30
40
LT1158 G06
1.8
2.0
5
15
25 35
V(HIGH)
V(LOW)
–40°C
+25°C
+85°C
–40°C
+25°C
+85°C
SUPPLY VOLTAGE (V)
0
2.0
2.5
3.0
30
LT1158 G07
1.5
1.0
10 20 40
0.5
0
3.5
V(HIGH)
V(LOW)
–40°C
+25°C
+85°C
–40°C
+25°C
+85°C
ENABLE THRESHOLD VOLTAGE (V)
51525
35
SUPPLY VOLTAGE (V)
0
60
FAULT CONDUCTION THRESHOLD (mV)
70
90
100
110
160
130
10
20
25
LT1158 G08
80
140
150
120
515
30
35
40
V11 = 0V
–40°C
+25°C
+85°C
SUPPLY VOLTAGE (V)
0
100
CURRENT LIMIT THRESHOLD (mV)
110
130
140
150
200
170
10
20
25
LT1158 G09
120
180
190
160
515
30
35
40
CLOSED LOOP
+85°C
–40°C
+25°C