Datasheet

V
CC
Reset Comparator
22k
Low Line
Comparator
OPEN for LM3724
CONNECT for
LM3722/LM3723
+
-
Manual Reset
Comparator
Reset Logic and
One-Shot Timer
+
-
1.225V
Reference
MR
RESET/
RESET
GND
V
CC
LM3722
LM3723
LM3724
1
2
3
4
5
MR
*(RESET)
RESET
GND
LM3722, LM3723, LM3724
SNVS154E –MAY 2001–REVISED MARCH 2013 www.ti.com
Connection Diagram
*( ) are for LM3723
Figure 3. SOT-23-5
PIN DESCRIPTIONS
PIN NAME FUNCTION
1 GND Ground reference
2 GND Ground reference, device substrate, connect to ground.
RESET Active-low output. RESET remains low while V
CC
is below the reset threshold voltage, and for 190
LM3722/LM3724 ms after V
CC
rises above the reset threshold voltage.
3
RESET Active-high output. RESET remains high while V
CC
is below the reset threshold, and for 190 ms
LM3723 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
4 MR
after the MR pin goes high. May be left open.
5 V
CC
Supply Voltage (+5V, +3.3V, or +2.5V, nominal)
Block Diagram
Figure 4. LM3722/LM3723/LM3724 Block Diagram
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Product Folder Links: LM3722 LM3723 LM3724