2
LT1161
1161fa
1
2
3
4
5
6
7
8
9
10
TOP VIEW
N PACKAGE
20-LEAD PLASTIC DIP
SW PACKAGE
20-LEAD PLASTIC SO
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
+
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
LT1161CSW
LT1161IN
LT1161ISW
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
ELECTRICAL CHARACTERISTICS
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.
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
+
= 12V to 48V each channel, unless otherwise noted.
Note 2: Both V
+
pins (11, 20) must be connected together and both
ground pins (1, 10) must be connected together.
