2
LT1780/LT1781
A
U
G
W
A
W
U
W
A
R
BSOLUTEXI
TI
S
Supply Voltage (VCC) ................................................ 6V
V+ ........................................................................ 13.2V
V– ...................................................................... –13.2V
Input Voltage
Driver ........................................................... V– to V +
Receiver ............................................... – 30V to 30V
ON/OFF ................................................. – 0.3V to 12V
Output Voltage
Driver ...................................... V+ – 30V to V – + 30V
Receiver .................................... – 0.3V to VCC + 0.3V
Short-Circuit Duration
V+ ................................................................... 30 sec
V– ................................................................... 30 sec
Driver Output .............................................. Indefinite
Receiver Output .......................................... Indefinite
Operating Temperature Range ..................... 0
°C to 70°C
Storage Temperature Range ................ – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300
°C
WU
U
PACKAGE/ORDER I FOR ATIO
ORDER
PART
NUMBER
ORDER
PART
NUMBER
LT1780CN
LT1780CSW
LT1781CN
LT1781CS
LT1781CSW
(Note 2)
ELECTRICAL C
C
HARA TERISTICS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Power Supply Generator
V + Output
7.9
V
V – Output
–7
V
Supply Current (VCC)
(Note 3), TA = 25°C
8
10
mA
q
14
mA
Supply Current When OFF (VCC)
SHUTDOWN (Note 4) LT1780 Only
q
110
A
Supply Rise Time
C1 = C2 = C3 = C4 = 0.1
F
0.2
ms
SHUTDOWN to Turn-On
LT1780 Only
0.2
ms
ON/OFF Pin Thresholds
Input Low Level (Device SHUTDOWN)
q
0.8
1.2
V
Input High Level (Device Enabled)
q
1.6
2.4
V
ON/OFF Pin Current
0V
≤ VON/OFF ≤ 5V
q
–15
80
A
Oscillator Frequency
130
kHz
Driver
Output Voltage Swing
Load = 3k to GND
Positive
q
5.0
7.5
V
Negative
q
– 6.3
– 5
V
Logic Input Voltage Level
Input Low Level (VOUT = High)
q
1.4
0.8
V
Input High Level (VOUT = Low)
q
2.0
1.4
V
1
2
3
4
5
6
7
8
9
TOP VIEW
18
17
16
15
14
13
12
11
10
NC
C1+
V+
C1–
C2+
C2–
V–
TR2 OUT
REC2 IN
N PACKAGE
18-LEAD PLASTIC DIP
ON/OFF
VCC
GND
TR1 OUT
REC1 IN
REC1 OUT
TR1 IN
TR2 IN
REC2 OUT
SW PACKAGE
18-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 80°C/ W, θJC = 36°C/W (N)
TJMAX = 125°C, θJA = 90°C/ W, θJC = 26°C/W (SW)
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
C1+
V+
C1–
C2+
C2–
V–
TR2 OUT
REC2 IN
VCC
GND
TR1 OUT
REC1 IN
REC1 OUT
TR1 IN
TR2 IN
REC2 OUT
N PACKAGE
16-LEAD PLASTIC DIP
S PACKAGE
16-LEAD PLASTIC SO
SW PACKAGE
16-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 90°C/ W, θJC = 46°C/W (N)
TJMAX = 125°C, θJA = 95°C/ W, θJC = 34°C/W (S)
TJMAX = 125°C, θJA = 95°C/ W, θJC = 27°C/W (SW)
Consult factory for Industrial and Military grade parts.
(Note 1)