AIC809/AIC810
3-Pin Microprocessor Reset Circuits
Analog Integrations Corporation
Si-Soft Research Center
DS-809P-02 010405
3A1, No.1, Li-Hsin Rd. I, Science Park, Hsinchu 300, Taiwan, R.O.C.
TEL: 886-3-5772500
FAX: 886-3-5772510
www.analog.com.tw
1
FEATURES
Ultra Low Supply Current 1
A(typ.)
Guaranteed Reset Valid to Vcc=0.9V
Available in Three Output Type: Open-Drain
Active Low (AIC809N), Push-Pull Active Low
(AIC809), Push-Pull Active High (AIC810)
140ms Min. Power-On Reset Pulse Width
Internally Fixed Threshold 2.3V, 2.6V, 2.9V,
3.1V, 4.0V, 4.4V, 4.6V
Tight Voltage Threshold Tolerance: 1.5%
Tiny Package in SOT-23
APPLICATIONS
Notebook Computers
Digital Still Cameras
PDAs
Critical Microprocessor Monitoring
DESCRIPTION
AIC809/AIC810 are low-power microprocessor (P)
supervisory circuits used to monitor power supplies in
P and digital systems. They provide applications with
benefits of circuit reliability and low cost by eliminating
external components.
These devices perform as valid singles in applications
with Vcc ranging from 6.0V down to 0.9V. The reset
signal lasts for a minimum period of 140ms whenever
V
CC
supply voltage falls below preset threshold. Both
AIC809 and AIC810 were designed with a reset
comparator to help identify invalid signals, which last
less than 140ms. The only difference between them is
that they have an active-low
RESET
output and
active-high RESET output, respectively.
Low supply current (1
A)
makes AIC809/AIC810 ideal
for portable equipment. The devices are
available
in
SOT-23 package.
TYPICAL APPLICATION CIRCUIT
Push-Pull Output
VCC
VCC
GND
GND
P
RESET
INPUT
RESET
(RESET)
V
CC
AIC809
(AIC810)
AIC809/AIC810
ORDERING INFORMATION
AIC809X-XXXXXX
AIC810 -XXXXXX
Example: AIC809-31-CUTR
3.1V and push-pull version, in SOT-23 Package & Tape & Reel Packing Type
AIC809-31-PUTR
3.1V and push-pull version, in Lead Free SOT-23 Package & Tape & Reel Packing
Type
PIN CONFIGURATION
SOT-23
TOP VIEW
1: GND
2: RESET (RESET)
3: VCC
PACKING TYPE
TR: TAPE & REEL
BG: BAG
PACKAGE TYPE
U: SOT-23
C: COMMERCIAL
P: LEAD FREE COMMERCIAL
RESET THRESHOLD VOLTAGE
23: 2.3V
26: 2.6V
29: 2.9V
31: 3.1V
40: 4.0V
44: 4.4V
46: 4.6V
OUTPUT TYPE
DEFAULT: Push-Pull type
N: N-ch Open-Drain type
(Additional voltage versions with a unit of 0.1V within the voltage range from 1.5V to 5.5V for this
product line may be available on demand with prior consultation with AIC.)
2
1
3
SOT-23 Marking
Part No.
Marking
Part No.
Marking
Part No.
Marking
AIC809-23CU RA23
AIC809N23CU RB23
AIC810-23CU RD23
AIC809-26CU
RA26
AIC809N26CU
RB26
AIC810-26CU
RD26
AIC809-29CU RA29
AIC809N29CU RB29
AIC810-29CU RD29
AIC809-31CU RA31
AIC809N31CU RB31
AIC810-31CU RD31
AIC809-40CU RA40
AIC809N40CU RB40
AIC810-40CU RD40
AIC809-44CU RA44
AIC809N44CU RB44
AIC810-44CU RD44
AIC809-46CU RA46
AIC809N46CU RB46
AIC810-46CU RD46
2
AIC809/AIC810
Part No.
Marking
Part No.
Marking
Part No.
Marking
AIC809-23PU RA23P
AIC809N23PU RB23P
AIC810-23PU RD23P
AIC809-26PU
RA26P
AIC809N26PU
RB26P
AIC810-26PU
RD26P
AIC809-29PU RA29P
AIC809N29PU RB29P
AIC810-29PU RD29P
AIC809-31PU RA31P
AIC809N31PU RB31P
AIC810-31PU RD31P
AIC809-40PU RA40P
AIC809N40PU RB40P
AIC810-40PU RD40P
AIC809-44PU RA44P
AIC809N44PU RB44P
AIC810-44PU RD44P
AIC809-46PU RA46P
AIC809N46PU RB46P
AIC810-46PU RD46P
ABSOLUTE MAXIMUM RATINGS
V
CC
-0.3V ~6.5V
RESET,
RESET
-0.3V ~ (VCC+0.3V)
Input Current (V
CC
)
20mA
Output Current (RESET or
RESET
)
20mA
Continuous Power Dissipation (T
A
= +70
C)
320mW
Operating Junction Temperature Range
-40
C ~ 85C
Junction Temperature
125
C
Storage Temperature Range
- 65
C ~ 150C
Lead Temperature (Soldering) 10 sec
260
C
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
TEST CIRCUIT
R E S E T
V C C
G N D
A IC 8 0 9
V
IN
I
IN
3
AIC809/AIC810
ELECTRICAL CHARACTERISTICS
4
(Typical values are at T
A
=25
C, unless otherwise specified.) (Note 1)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN.
TYP.
MAX.
UNIT
Operating Voltage Range
V
CC
0.9 6 V
Supply Current
I
CC
V
CC
= V
TH
+0.1V
1
3
A
T
A
=+25
C 2.265
2.3
2.335
AIC809-23
T
A
= -40
C to +85C 2.254 2.346
T
A
=+25
C 2.561
2.6
2.639
AIC809-26
T
A
= -40
C to +85C
2.548 2.652
T
A
=+25
C 2.857
2.9
2.944
AIC809-29
T
A
= -40
C to +85C
2.842 2.958
T
A
=+25
C 3.054
3.1
3.147
AIC809-31
T
A
= -40
C to +85C
3.038 3.162
T
A
=+25
C 3.940
4.0
4.060
AIC809-40
T
A
= -40
C to +85C
3.920 4.080
T
A
=+25
C 4.334
4.4
4.466
AIC809-44
T
A
= -40
C to +85C
4.312 4.488
T
A
=+25
C 4.531
4.6
4.669
Reset Threshold
V
TH
AIC809-46
T
A
=-40
C to +85C 4.508 4.692
V
V
CC
to Reset Delay
T
RD
V
CC
=V
TH
to (V
TH
-0.1V), V
TH
=3.1V
20
S
T
A
=+25
C
140 230 560
Reset Active Timeout Period
T
RP
V
CC
= V
TH (MAX)
T
A
= -40
C to +85C 100 1030
mS
V
OH
V
CC
=V
TH
+0.1V, I
SOURCE
=1mA 0.8V
CC
RESET
Output Voltage
V
OL
V
CC
=V
TH
- 0.1V, I
SINK
=1mA
0.2Vcc
V
V
OH
V
CC
=V
TH
-0.1V, I
SOURCE
=1mA
0.8V
CC
RESET Output Voltage
V
OL
V
CC
=V
TH
+0.1V, I
SINK
=1mA
0.2Vcc
V
Note1:
Specifications
are production tested at T
A
=25
C. Specifications over the -40C to 85C operating
temperature range are assured by design, characterization and correlation with Statistical Quality
Controls (SQC).
Note2:
RESET
output is for AIC809; RESET output is for AIC810.
AIC809/AIC810
TYPICAL PERFORMANCE CHARACTERISTICS
5
-40
-
20
0
20
40
60
80
100
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
V
TH
=2.3V
V
TH
=3.1V
V
TH
=4.6V
Su
pp
l
y
Cu
r
r
ent
(
A
)
Temperature (
C)
Fig 1 Supply Current vs. Temperature
P
o
w
e
r-Dow
n R
e
set Delay
(
S)
Fig 2 Power-Down Reset Delay vs. Temperature
-60
-40
-20
0
20
40
60
80
100
0
10
20
30
40
50
60
70
80
90
100
110
120
V
OD
=200mV
V
OD
=100mV
V
OD
=50mV
Temperature (
C)
V
TH
=2.3V
V
OD
=V
TH
-V
CC
P
o
w
e
r-Dow
n R
e
set Delay
(
S)
Temperature (
C)
Fig 3 Power-Down Reset Delay vs. Temperature
-
60
-
40
-20
0
20
40
60
80
100
0
20
40
60
80
100
120
140
160
180
200
220
240
V
OD
=200mV
V
OD
=100mV
V
OD
=50mV
V
TH
=3.1V
V
OD
=V
TH
-V
CC
P
o
w
e
r-Dow
n R
e
set Delay
(
S)
Temperature (
C)
Fig 4 Power-Down Reset Delay vs. Temperature
-60
-
40
-
20
0
20
40
60
80
100
0
100
200
300
400
V
OD
=200mV
V
OD
=100mV
V
OD
=50mV
V
TH
=4.6V
V
OD
=V
TH
-V
CC
N
o
r
m
aliz
ed
R
e
s
e
t
T
h
r
e
s
h
old
(
V
)
Temperature (
C)
Fig 5 Normalized Reset Threshold vs. Temperature
-40
-20
0
20
40
60
80
100
0.985
0.990
0.995
1.000
1.005
1.010
1.015
V
TH
=3.1V
V
TH
=2.3V
V
TH
=4.6V
Power
-
Up Res
e
t
T
i
meout
(
m
S)
Temperature (
C)
Fig 6 Power-Up Reset Timeout vs. Temperature
-60
-40
-20
0
20
40
60
80
100
0
100
200
300
400
500
600
V
TH
=2.3V
V
TH
=3.1V
V
TH
=4.6V
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