AIC809/AIC810
3-Pin Microprocessor Reset Circuits
FEATURES
Ultra Low Supply Current 1µA(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, 4.2V, 4.4V, 4.6V
Tight Voltage Threshold Tolerance: 1.5%
Tiny Package in SOT-23
These devices perform as valid signals 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
DESCRIPTION
AIC809/AIC810 are low-power microprocessor (µP)
supervisory circuits used to monitor power supplies in
µP and digital systems. They provide applications with
benefits of circuit reliability and low cost by eliminating
external components.
APPLICATIONS
Notebook Computers
Digital Still Cameras
PDAs
Critical Microprocessor Monitoring
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
µA)
makes AIC809/AIC810 ideal
for portable equipment. The devices are
available
in
SOT-23 package.
TYPICAL APPLICATION CIRCUIT
Analog Integrations Corporation
Si-Soft Research Center
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
DS-809G-01 092408
1
AIC809/AIC810
ORDERING INFORMATION
AIC809X-XXXXXXX
AIC810 -XXXXXXX
PACKING TYPE
TR: TAPE & REEL
BG: BAG
PACKAGE TYPE
U: SOT-23
UA: SOT-23
P: LEAD FREE COMMERCIAL
G: Green Package
RESET THRESHOLD VOLTAGE
23: 2.3V 40: 4.0V
26: 2.6V 42: 4.2V
29: 2.9V 44: 4.4V
31: 3.1V 46: 4.6V
OUTPUT TYPE
DEFAULT: Push-Pull type
N: N-ch Open-Drain type
Example: AIC809-31PUTR
3.1V and push-pull version, in Lead FreeSOT-23 Package & Tape & Reel Packing
Type
PIN CONFIGURATION
SOT-23 (U)
TOP VIEW
1: GND
2: RESET (RESET)
3: VCC
3
1
2
SOT-23 (UA)
TOP VIEW
1: RESET (RESET)
2: GND
3: VCC
3
1
2
(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.)
SOT-23 Marking
Part No.
AIC809-23PU
AIC809-26PU
AIC809-29PU
AIC809-31PU
AIC809-40PU
AIC809-42PU
AIC809-44PU
AIC809-46PU
Marking
RA23P
RA26P
RA29P
RA31P
RA40P
RA42P
RA44P
RA46P
Part No.
AIC809N-23PU
AIC809N-26PU
AIC809N-29PU
AIC809N-31PU
AIC809N-40PU
AIC809N-42PU
AIC809N-44PU
AIC809N-46PU
Marking
RB23P
RB26P
RB29P
RB31P
RB40P
RB42P
RB44P
RB46P
Part No.
AIC810-23PU
AIC810-26PU
AIC810-29PU
AIC810-31PU
AIC810-40PU
AIC810-42PU
AIC810-44PU
AIC810-46PU
Marking
RD23P
RD26P
RD29P
RD31P
RD40P
RD42P
RD44P
RD46P
2
AIC809/AIC810
ELECTRICAL CHARACTERISTICS
(Typical values are at T
A
=25°C, unless otherwise specified.) (Note 1)
PARAMETER
Operating Voltage Range
Supply Current
SYMBOL
TEST CONDITIONS
V
CC
= V
TH
+0.1V
AIC809-23
AIC809-26
AIC809-29
AIC809-31
T
A
=+25°C
T
A
= -40°C to +85°C
T
A
=+25°C
T
A
= -40°C to +85°C
T
A
=+25°C
T
A
= -40°C to +85°C
T
A
=+25°C
T
A
= -40°C to +85°C
T
A
=+25°C
T
A
= -40°C to +85°C
T
A
=+25°C
T
A
= -40°C to +85°C
T
A
=+25°C
T
A
= -40°C to +85°C
T
A
=+25°C
T
A
=-40°C to +85°C
T
A
=+25°C
T
A
= -40°C to +85°C
MIN.
0.9
TYP.
1
MAX.
6
3
2.335
2.346
2.639
2.652
2.944
2.958
3.147
3.162
4.060
4.080
4.263
4.284
4.466
4.488
4.669
4.692
UNIT
V
µA
V
CC
I
CC
2.265
2.254
2.561
2.548
2.857
2.842
3.054
3.038
3.940
3.920
4.137
4.116
4.334
4.312
4.531
4.508
2.3
2.6
2.9
3.1
4.0
4.2
4.4
4.6
20
Reset Threshold
V
TH
AIC809-40
AIC809-42
AIC809-44
AIC809-46
V
V
CC
to Reset Delay
Reset Active Timeout Period
RESET
Output Voltage
T
RD
T
RP
V
OH
V
OL
V
OH
V
OL
V
CC
=V
TH
to (V
TH
-0.1V), V
TH
=3.1V
V
CC
= V
TH (MAX)
140
100
0.8V
CC
µS
560
1030
0.2Vcc
mS
V
V
0.2Vcc
230
V
CC
=V
TH
+0.1V, I
SOURCE
=1mA
V
CC
=V
TH
- 0.1V, I
SINK
=1mA
V
CC
=V
TH
-0.1V, I
SOURCE
=1mA
V
CC
=V
TH
+0.1V, I
SINK
=1mA
RESET Output Voltage
0.8V
CC
Note1: Specifications are production tested at T
A
=25°C. Specifications over the -40°C to 85°C 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.
5
Analogue and Mixed Signal
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