Custom voltages and improved accuracies are available, subject to minimum orders. Contact your local National Semiconductor Sales Office for information.
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2
LM3722/LM3723/LM3724
Pin Descriptions
PIN
1
2
NAME
GND
GND
RESET
LM3722/LM3724
RESET
LM3723
MR
V
CC
Ground reference
Ground reference, device substrate, connect to ground.
Active-low output. RESET remains low while V
CC
is below the reset threshold voltage,
and for 190 ms after V
CC
rises above the reset threshold voltage.
Active-high output. RESET remains high while V
CC
is below the reset threshold, and for
190 ms after V
CC
rises above the reset threshold.
Active-low input. Reset is asserted whenever this pin is pulled low and remains asserted
for 190 ms after the MR pin goes high. May be left open.
Supply Voltage (+5V, +3.3V, or +2.5V, nominal)
FUNCTION
3
4
5
Block Diagram
LM3722/LM3723/LM3724 Block Diagram
20014435
3
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LM3722/LM3723/LM3724
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
CC
, MR
−0.3V to 6.0V
RESET, RESET
−0.3V to (V
CC
+ 0.3V)
Input Current, V
CC
Pin
20mA
Output Current, RESET, RESET Pin
20mA
ESD Rating (Note 2)
2kV
Continuous Power Dissipation (T
A
= +70°C)
SOT-23 (Note 3)
320mW
Operating Temperature Range
Industrial:
−40°C to +85°C
Extended:
−40°C to +125°C
Maximum Junction Temperature
125°C
Storage Temperature Range
−65°C to +160°C
Lead Temperature (soldering, 10sec)
+300°C
Electrical Characteristics
Typical values are at T
A
= +25°C. Limits with standard typeface are for T
A
= +25°C, and limits in boldface type apply for the operating
temperature range (−40°C to +85°C) for LM372_IM5X, and (−40°C to +125°C) for LM372_EM5X, unless otherwise noted. (Note
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