APX809S/810S
3-PIN MICRO POWER VOLTAGE DETECTOR
Description
The APX809S/810S are used for microprocessor (µP) supervisory
circuits to monitor the power supplies in µP and digital systems. They
provide excellent circuit reliability and low cost by eliminating external
components and adjustments when used with +5V, +3.3V, +3.0V and
+2.5V powered circuits.
These circuits perform a single function: they assert a reset signal
whenever the V
CC
supply voltage declines below a preset threshold,
keeping it asserted for at least 240ms after V
CC
has risen above the
reset threshold. Reset thresholds suitable for operation with a variety
of supply voltages are available. The APX809S/810S have push pull
outputs. The APX809S have an active low
Pin Assignments
(Top View)
(Top View)
2
2
RESET
RESET
GND
V
CC
3
1
V
CC
3
RESET
1
GND
RESET
SOT23 (SA)
SOT23(SR)
RESET
output, while
the APX810S has an active high RESET output. The reset
comparator is designed to ignore fast transients on V
CC
, and the
outputs are guaranteed to be in the correct logic state for V
CC
down to
1V. Low supply current makes the APX809S/810S ideal for use in
portable equipment. The APX809S/810S is available in a 3-pin
SOT23 packages.
Features
Precision Monitoring of +2.5V, +3V, +3.3V, and +5V Power-
Supply Voltages
Fully Specified Over-temperature
Available in three Output Configurations
Push-Pull
RESET
Active Low (APX809S)
Push-Pull RESET Active High (APX810S)
200ms Typ Power-On Reset Pulse Width
10µA Supply Current (Typ.)
Guaranteed Reset Valid to V
CC
= +1V
No External Components
SOT23 Available in “Green” Molding Compound (No Br, Sb)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
Computers
Controllers
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable/Battery Powered Equipment
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and
Antimony-free, "Green" and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total
Br + Cl) and <1000ppm antimony compounds.
Typical Applications Circuit
V
CC
C
IN
100 nF
V
CC
V
CC
A P X 8X X S
RESET
(R E S E T)
M icroprocessor
RESET
IN P U T
GND
GND
APX809S/810S
Document number: DS39140 Rev. 1 - 2
1 of 9
www.diodes.com
January 2017
© Diodes Incorporated
APX809S/810S
Pin Descriptions
Pin Number
SOT23(SA)
3
2
1
SOT23(SR)
3
1
2
V
CC
RESET
/RESET
Pin Name
Function
Operating Voltage Input
Reset Output Pin
Ground
GND
Functional Block Diagram
Absolute Maximum Ratings
(@T
A
= +25°C, unless otherwise specified.) (Note 4)
Symbol
V
CC
V
RESET
I
CC
I
O
θ
JA
θ
JC
Supply Voltage
RESET
/RESET Voltage
Parameter
Rating
-0.3 to 6.0
-0.3 to 6.0
20
20
SOT23
232
Unit
V
V
mA
mA
Input Current
Output Current
Thermal Resistance Junction-to-Ambient
°C/W
Thermal Resistance Junction-to-Case
HBM (Human Body Model)
ESD
MM (Machine Model)
T
J
T
STG
Note:
SOT23
87
6,000
V
600
-40 to +150
-65 to +150
°C
C
Junction Temperature Range
Storage Temperature Range
4. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied.
Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability.
APX809S/810S
Document number: DS39140 Rev. 1 - 2
2 of 9
www.diodes.com
January 2017
© Diodes Incorporated
APX809S/810S
Recommended Operating Conditions
(@T
A
= +25°C, unless otherwise specified.)
Symbol
T
A
V
CC
V
RESET
Parameter
Operating Ambient Temperature Range
Supply Voltage
RESET
/RESET
Output Voltage
Min
-40
1.0
0
Max
+125
5.5
5.5
Unit
°C
V
V
Electrical Characteristics
(@T
A
= +25°C, unless otherwise specified.)
Symbol
I
CC
Parameter
Supply Current
APX809SXX/810SXX-23
APX809SXX/810SXX-26
APX809SXX/810SXX-29
V
TH
APX809SXX/810SXX-31
APX809SXX/810SXX-40
APX809SXX/810SXX-44
APX809SXX/810SXX-46
Δ
Δ
t
S
Reset Threshold Voltage Temperature
Coefficient
V
CC
Drop to
RESET
Delay
Reset Active
Timeout
Period
APX809S00/810S00-XX
APX809S05/810S05-XX
APX809S/810S-XX
V
CC
= V
TH
-0.2V, I
SINK
= 1.2mA
V
OL
V
CC
≥
1.02 x V
TH
T
A
= -40 to +125°C
V
CC
= V
TH
to (V
TH
– 100mV)
T
A
= +25°C
Test Conditions
V
TH
+ 0.2V
Min
–
2.22
2.59
2.89
3.04
3.94
4.32
4.57
–
–
1
20
140
–
–
–
0.8V
CC
V
CC
–1.5
–
–
0.8 V
CC
Typ
7
2.25
2.63
2.93
3.08
4.00
4.38
4.63
30
20
1.7
50
240
–
–
–
–
–
–
–
–
Max
16
2.29
2.67
2.97
3.12
4.05
4.44
4.69
–
–
3.3
70
280
0.3
0.4
0.3
–
V
–
0.3
0.4
–
V
V
ms
ppm/°C
µs
V
Unit
μA
t
DELAY
RESET
Output Voltage Low
(APX809S)
V
CC
= V
TH
-0.2V, I
SINK
= 3.2mA
V
CC
> 1.0V, I
SINK
= 50µA
VCC > VTH +0.2V,
I
SOURCE
= 500µA
VCC > V
TH
+0.2V,
I
SOURCE
= 800µA
V
CC
= V
TH
+0.2V, I
SINK
= 1.2mA
V
CC
= V
TH
+0.2V, I
SINK
= 3.2mA
1.8V < V
CC
< V
TH
-0.2,
I
SOURCE
= 150µA
V
OH
RESET
Output Voltage-High
(APX809S)
V
OL
V
OH
RESET Output Voltage-Low
(APX810S)
RESET Output Voltage-High
(APX810S)
V
APX809S/810S
Document number: DS39140 Rev. 1 - 2
3 of 9
www.diodes.com
January 2017
© Diodes Incorporated
APX809S/810S
Performance Characteristics
RESET Threshold Voltage vs. Temperature
RESET Active Timeout Period vs. Temperature
3.10
3.05
3.00
500
APX809S-29SA-7
APX809S-29SA-7
Reset Active Timeout Period(ms)
400
Threshold Voltage(V)
2.95
2.90
2.85
2.80
2.75
2.70
-40
-25
-10
5
20
35
50
65
o
300
200
100
0
80
95
110
125
-40
-25
-10
5
20
35
50
65
o
80
95
110
125
Ambient temperature( C)
Ambient temperature( C)
Supply Current vs. Temperature
Output Voltage vs. Input Voltage
16
8
APX809S-29SA-7
12
7
6
APX809S-29SA-7
Supply Current(uA)
Output Voltage(V)
-40
-25
-10
5
20
35
50
65
o
5
4
3
2
1
8
4
0
80
95
110
125
0
0
1
2
3
4
5
6
Ambient temperature( C)
Supply Voltage(V)
Output Sink Current vs. Input Voltage
Output Sink Current vs. Input Voltage
12
6.4
10
APX809S-29SA-7
V
RESET
=0.2V
-40 C
o
6.0
25 C
o
5.6
APX809S-29SA-7
V
RESET
=V
IN
-0.2V
-40 C
o
Sink Current(mA)
8
5.2
Drive Current(mA)
25 C
o
4.8
4.4
4.0
3.6
3.2
2.8
125 C
o
6
125 C
o
4
2
0
1.0
1.4
1.8
2.2
2.6
3.0
2.4
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage(V)
Input Voltage(V)
APX809S/810S
Document number: DS39140 Rev. 1 - 2
4 of 9
www.diodes.com
January 2017
© Diodes Incorporated
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