Datasheet

2
LT1161
Supply Voltages (Pins 11, 20) ................... –15V to 60V
Input Voltages (Pins 3, 5, 7, 9)...... (GND – 0.3V) to 15V
Gate Voltages (Pins 12, 14, 16, 18) ........................ 75V
Sense Voltages (Pins 13, 15, 17, 19)..................V
+
±5V
Current (Any Pin).................................................. 50mA
Operating Temperature Range
LT1161C............................................... 0°C to 70°C
LT1161I............................................ – 40°C to 85°C
Junction Temperature Range (Note 1)
LT1161C.............................................. 0°C to 125°C
LT1161I......................................... – 40°C to 150°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
U
U
θ
JA
= 70°C/ W (N)
θ
JA
= 110°C/ W (S)
ORDER PART
NUMBER
LT1161CN
LT1161CS
LT1161IN
LT1161IS
1
2
3
4
5
6
7
8
9
10
TOP VIEW
N PACKAGE
20-LEAD PLASTIC DIP
S PACKAGE
20-LEAD PLASTIC SOL
20
19
18
17
16
15
14
13
12
11


GND
TIMER1
INPUT 1
TIMER 2
INPUT 2
TIMER 3
INPUT 3
TIMER 4
INPUT 4
GND
V
+

SENSE 1
GATE 1
SENSE 2
GATE 2
SENSE 3
GATE 3
SENSE 4
GATE 4
V
+
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I
S
Supply Current All Channels OFF (Note 2) 3 4.5 6.5 mA
∆I
S(ON)
Delta Supply Current (ON State) Measure Increase in I
S
per Channel 1 1.35 mA
V
INH
Input High Voltage ● 2V
V
INL
Input Low Voltage ● 0.8 V
I
IN
Input Current V
IN
= 2V ● 15 30 50 µA
V
IN
= 5V ● 55 110 185 µA
C
IN
Input Capacitance 5pF
V
T(TH)
Timer Threshold Voltage V
IN
= 2V, Adjust V
T
● 2.7 3 3.3 V
V
T(CL)
Timer Clamp Voltage V
IN
= 0.8V 3.2 3.5 3.8 V
I
T
Timer Charge Current V
IN
= V
T
= 2V 9 14 20 µA
V
SEN
Drain Sense Threshold Voltage 50 65 80 mV
Temperature Coefficient +0.33 %/°C
I
SEN
Drain Sense Input Current V
+
= 48V, V
SEN
= 65mV 0.5 1.5 µA
V
GATE
– V
+
Gate Voltage Above Supply V
+
= 8V 4 4.5 6 V
V
+
= 12V ● 7 8.5 10 V
V
+
= 24V ● 10 12 14 V
V
+
= 48V ● 10 12 14 V
t
ON
Turn-ON Time V
+
= 24V, V
GATE
> 32V, C
GATE
= 1000pF 100 220 400 µs
t
OFF
Turn-OFF Time V
+
= 24V, V
GATE
< 2V, C
GATE
= 1000pF 75 200 µs
t
OFF(CL)
Current Limit Turn-OFF Time V
+
= 24V, (V
+
– V
SENSE
) → 0.1V, C
GATE
= 1000pF 25 50 µs
T
A
= 25°C, V
+
= 12V to 48V each channel, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
Note 2: Both V
+
pins (11, 20) must be connected together and both
ground pins (1, 10) must be connected together.
The ● denotes specifications which apply over the full operating
temperature range.
Note 1: T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formulas:
LT1161CN, LT1161IN: T
J
= T
A
+ (P
D
× 70°C/W)
LT1161CS, LT1161IS: T
J
= T
A
+ (P
D
× 110°C/W)
Consult factory for Military grade parts.