LT1158
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. Test Circuit, V+ = V16 = 12V, V11 = V12 = V13 = 0V, Pins 1 and 4 open,
Gate Feedback pins connected to Gate Drive pins unless otherwise specified.
LT1158I
TYP
LT1158C
TYP MAX UNITS
SYMBOL
I + I
PARAMETER
CONDITIONS
+
MIN
MAX
MIN
DC Supply Current (Note 2) V = 30V, V16 = 15V, V4 = 0.5V
2.2
7
13
3
10
18
2.2
7
3
10
18
mA
mA
mA
2
10
+
+
V = 30V, V16 = 15V, V6 = 0.8V
4.5
8
4.5
8
V = 30V, V16 = 15V, V6 = 2V
13
+
I
Boost Current
V = V13 = 30V, V16 = 45V, V6 = 0.8V
3
1.4
5
4.5
2
3
1.4
5
4.5
2
mA
V
16
l
l
l
l
l
V6
Input Threshold
0.8
0.8
I
Input Current
V6 = 5V
15
1.4
1.7
35
15
1.4
1.8
35
μA
V
6
V4
Enable Low Threshold
Enable Hysteresis
Enable Pullup Current
Charge Pump Voltage
V6 = 0.8V, Monitor V9
V6 = 0.8V, Monitor V9
V4 = 0V
0.9
1.3
15
1.15
1.5
25
0.85
1.2
15
1.15
1.5
25
ΔV4
V
I
μA
4
+
+
l
l
V15
9
40
11
43
9
40
11
43
V
V
V = 5V, V6 = 2V, Pin 16 open, V13 → 5V
47
17
17
2.5
2
47
17
17
2.5
2
V = 30V, V6 = 2V, Pin16 open, V13 → 30V
+
l
l
V9
V1
Bottom Gate “ON” Voltage
Boost Drive Voltage
V = V16 = 18V, V6 = 0.8V
12
12
1
14.5
14.5
1.75
1.5
12
12
1
14.5
14.5
1.75
1.5
V
V
+
V = V16 = 18V, V6 = 0.8V, 100mA Pulsed Load
+
V14 – V13 Top Turn-Off Threshold
V = V16 = 5V, V6 = 0.8V
V
+
V8
Bottom Turn-Off Threshold
Fault Output Leakage
V = V16 = 5V, V6 = 2V
1
1
V
+
l
I
V = 30V, V16 = 15V, V6 = 2V
0.1
1
0.1
1
μA
V
5
+
V5
Fault Output Saturation
V = 30V, V16 = 15V, V6 = 2V, I = 10mA
0.5
1
0.5
1
5
+
V12 – V11 Fault Conduction Threshold V = 30V, V16 = 15V, V6 = 2V, I = 100μA
90
110
150
130
85
110
150
135
mV
5
+
V12 – V11 Current Limit Threshold
V = 30V, V16 = 15V, V6 = 2V, Closed Loop
130
120
170
180
120
120
180
180
mV
mV
l
+
V12 – V11 Current Limit Inhibit
V = V12 = 12V, V6 = 2V, Decrease V11
1.1
1.25
1.4
1.1
1.25
1.4
V
V
Threshold
Until V15 Goes Low
DS
l
l
l
l
l
l
t
t
t
t
t
t
Top Gate Rise Time
Top Gate Turn-Off Delay
Top Gate Fall Time
Pin 6 (+) Transition, Meas. V15 – V13 (Note 4)
Pin 6 (–) Transition, Meas. V15 – V13 (Note 4)
Pin 6 (–) Transition, Meas. V15 – V13 (Note 4)
Pin 6 (–) Transition, Meas. V9 (Note 4)
130
350
120
130
200
100
250
550
250
250
400
200
130
350
120
130
200
100
250
550
250
250
400
200
ns
ns
ns
ns
ns
ns
R
D
F
Bottom Gate Rise Time
R
D
F
Bottom Gate Turn-Off Delay Pin 6 (+) Transition, Meas. V9 (Note 4)
Bottom Gate Fall Time Pin 6 (+) Transition, Meas. V9 (Note 4)
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 3: Dynamic supply current is higher due to the gate charge
being delivered at the switching frequency. See typical performance
characteristics and applications information.
Note 4: Gate rise times are measured from 2V to 10V, delay times are
Note 2: T is calculated from the ambient temperature T and power
measured from the input transition to when the gate voltage has decreased
to 10V, and fall times are measured from 10V to 2V.
J
A
dissipation P according to the following formulas:
D
LT1158IN, LT1158CN: T = T + (P × 70°C/W)
J
A
D
LT1158ISW, LT1158CSW: T = T + (P × 110°C/W)
J
A
D
1158fb
3
LINEAR_DIMENSIONS [ Linear Dimensions ]
