NSC LM8365BCLMFX30, LM8365BALMFX45, LM8365BALMFX22, LM8365BALMF45, LM8365BALMF22 Datasheet
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LM8365
Micropower Undervoltage Sensing Circuits with
Programmable Output Delay
LM8365 Micropower Undervoltage Sensing Circuits with Programmable Output Delay
March 2003
General Description
The LM8365 series are micropower undervoltage sensing
circuits that are ideal for use in battery powered microprocessor based systems, where extended battery life is a key
requirement.
A range of threshold voltages from 2.0V to 4.5V are available
with an active low, open drain or CMOS, output. These
devices feature a very low quiescent current of 0.65µA typical. The LM8365 series features a highly accurate voltage
reference, a comparator with precise thresholds and built-in
hysterisis to prevent erratic reset operation, a time delayed
output which can be programmed by the system designer,
and guaranteed Reset operation down to 1.0V with extremely low standby current.
These devices are available in the space saving 5-Pin
SOT23 surface mount package. For additional undervoltage
thresholds and output options, please contact National
Semiconductor.
Functional Diagrams
CMOS Output Open Drain Output
Features
n Extremely Low Quiescent Current: 0.65µA, at VIN=
2.87V
n High Accuracy Threshold Voltage (
n Complementary or Open Drain Output
n Programmable output delay by external Capacitor
(100ms typ with 0.1µF)
n Input Voltage Range: 1V to 6V
n Surface Mount Package (5-Pin SOT23)
n Pin for pin compatible with MC33465
±
2.5%)
Applications
n Low Battery Detection
n Microprocessor Reset Controller
n Power Fail Indicator
n Battery Backup Detection
20066013
20066014
Connection Diagram
5-Pin SOT23
Top View
© 2003 National Semiconductor Corporation DS200660 www.national.com
20066012
Pin Description
LM8365
Ordering Information
20066015
Package Part Number Package
Marking
5-Pin
SOT23
LM8365BALMF22
LM8365BALMFX22 3k Units Tape and Reel
LM8365BALMF27
LM8365BALMFX27 3k Units Tape and Reel
LM8365BCLMF30
LM8365BCLMFX30 3k Units Tape and Reel
LM8365BALMF45
LM8365BALMFX45 3k Units Tape and Reel
F08A 2.2V
F07A 2.7V
F02A 3.0V
F06A 4.5V
Threshold Output Type Transport Media NSC Drawing
Open Drain,
Active Low
Open Drain,
Active Low
CMOS, Active
Low
Open Drain,
Active Low
1k Units Tape and Reel
1k Units Tape and Reel
1k Units Tape and Reel
1k Units Tape and Reel
MF05A
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LM8365
Absolute Maximum Ratings (Note 1)
Junction Temperature 125˚C
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage −0.3V to 6.5V
RESET Output Voltage
RESET Output Current
−0.3V to 6.5V
70mA
Storage Temperature Range −65˚C to 150˚C
Mounting Temperature
Operating Ratings (Note 1)
Temperature Range −40˚C to 85˚C
Thermal Resistance to Ambient (θ
ESD Tolerance
Human Body Model 2000V
Machine Model 200V
) 265˚C/W
JA
Lead Temp. (Soldering 10 sec) 260˚C
Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TA= 25˚C.
Symbol Parameter Conditions Min
(Note 3)
High to Low State Output
Decreasing)
(V
IN
V
DET−
Detector Threshold Voltage
22 Suffix 2.145 2.2 2.255
27 Suffix 2.633 2.7 2.767
30 Suffix 2.925 3.0 3.075
45 Suffix 4.388 4.5 4.613
V
Increasing
IN
22 Suffix 0.066 0.110 0.154
V
HYS
Detector Threshold Hysteresis
27 Suffix 0.081 0.135 0.189
30 Suffix 0.090 0.150 0.210
45 Suffix 0.135 0.225 0.315
∆Vdet/∆T Detector Threshold Voltage
Temperature Coefficient
V
OH
V
OL
I
OL
I
OH
I
CD
R
D
V
IN
RESET Output Voltage (CMOS Output: I
SOURCE
= 1mA)
-2.1 VIN-1.0
V
IN
(Open Drain or CMOS Output:
= 1mA)
I
SINK
RESET Output Sink Current VIN= 1.5V, VOL= 0.5V 1.0 2.5 mA
RESET Output Source Current VIN= 4.5V, VOL= 2.4V 1.0 7.0 mA
Delay Pin Output Sink Current VIN= 1.5V, VCD= 0.5V 0.2 1.8 mA
Delay Resistance 0.5 1.0 2.0 MΩ
Operating Input Voltage Range 1.0 6.0 V
22 Suffix
= 2.10V 0.57 0.8
V
IN
V
= 4.20V 0.71 1.3
IN
27 Suffix
V
= 2.60V 0.62 0.9
IN
V
= 4.70V 0.75 1.3
I
IN
Quiescent Input Current
IN
30 Suffix
V
= 2.87V 0.65 0.9
IN
V
= 5.00V 0.77 1.3
IN
45 Suffix
V
= 4.34V 0.70 1.0
IN
V
= 6.00V 0.85 1.4
IN
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Typical values represent the most likely parametric norm.
Note 3: All limits are guaranteed by testing or statistical analysis.
Typ
(Note 2)
±
100 PPM/˚C
0.25
Max
(Note 3)
V
IN
0.5 V
Units
V
V
µA
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