Datasheet
LM1815
SNOSBU8F –SEPTEMBER 2000–REVISED MARCH 2013
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Absolute Maximum Ratings
(1)(2)
Supply Voltage 12V
Power Dissipation
(3)
1250 mW
Operating Temperature Range −40°C ≤ T
A
≤ +125°C
Storage Temperature Range −65°C ≤ T
J
≤ +150°C
Junction Temperature +150°C
Input Current ±30 mA
Lead Temperature (Soldering, 10 sec.) 260°C
(1) “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be ensured. They are not meant to imply
that the devices should be operated at these limits. The table of “Electrical Characteristics” specifies conditions of device operation.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(3) For operation at elevated temperatures, the device must be derated based on a 150°C maximum junction temperature and a thermal
resistance of 80°C/W (DIP), 120°C/W (SO-14) junction to ambient.
Electrical Characteristics
(T
A
= 25°C, V
CC
= 10V, unless otherwise specified, see Figure 17)
Parameter Conditions Min Typ Max Units
Operating Supply Voltage 2.5 10 12 V
Supply Current Pin 3 = -0.1V, Pin 9 = 2V, Pin 11 = 0.8V 3.6 6 mA
Reference Pulse Width f
IN
= 1Hz to 2kHz, R = 150kΩ, C = 0.001µF 70 100 130 µs
Logic Input Bias Current V
IN
= 2V, (Pin 9 and Pin 11) 5 µA
Signal Input Bias Current V
IN
= 0V dc, (Pin 3) -200 nA
Logic Threshold (Pin 9 and Pin 11) 0.8 1.1 2.0 V
V
OUT
High R
L
= 1kΩ, (Pin 10) 7.5 8.6 V
V
OUT
Low I
SINK
= 0.1mA, (Pin 10) 0.3 0.4 V
Output Leakage Pin 12 V
12
= 11V 0.01 10 µA
Saturation Voltage P12 I
12
= 2mA 0.2 0.4 V
Input Zero Crossing Threshold All Modes, V
SIGNAL
= 1V pk-pk -25 0 25 mV
(1)
Mode 1, Pin 5 = Open 30 45 60 mV
(1)
Minimum Input Arming Threshold Mode 2, Pin 5 = V
CC
200 300 450 mV
(1)
Mode 3, Pin 5 = Gnd -25 0 25 mV
(1)
Mode 1, Pin 5 = Open
40 80 90 %
(1)
V
SIGNAL
≥ 230mV pk-pk
(2)
Mode 2, Pin 5 = V
CC
Adaptive Input Arming Threshold 80 %
(1)
V
SIGNAL
≥ 1.0V pk-pk
(2)
Mode 3, Pin 5 = Gnd
80 %
(1)
V
SIGNAL
≥ 150mV pk-pk
(2)
(1) The Min/Typ Max limits are relative to the positive voltage peak seen at V
IN
Pin 3.
(2) Tested per Figure 17, V
SIGNAL
is a Sine Wave; F
SIGNAL
is 1000Hz.
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