APR3001/2/3
MicroPower Microprocessor Reset Circuit
Features
•
•
•
•
•
•
1.2V to 6V Input Voltage Range
Low Quiescent Current : less Than 1.5
µA
High accuracy detection threshold : ±1.5%
Fixed trimmed reset thresholds for 1.5V, 1.75V,
2.32V, 2.63V, 2.93V, 3.08V, 3.9V, 4.38V.
Reset Timeout Period 250ms
Available output configurations
- Open-drain output
- CMOS active high output
- CMOS active low output
General Description
The APR3001/2/3 are designed to monitor voltage
supplies in
µP
and digital systems. The quiescent
current is extremely low, typically 1.5 µA, making it
ideal for portable battery operated equipment. The
APR3001/2/3 operate by monitoring the system
power supply voltage. When the input voltage drops
below a fixed threshold, the device asserts a reset
signal for a fixed time period after Vcc rises above
the fixed threshold. The APR3001/2/3 series is avail-
able with three output stage versions : APR3001
push-pull active low output, APR3002 push-pull ac-
tive high output and APR3003 open drain active low
output. They are also designed to reject fast line tran-
sient glitches on Vcc. The APR3001/2/3 are come in
a miniature SOT-23, SOT-23-5, SOT-89 packages.
•
•
SOT-23 , SOT-23-5 and SOT-89 packages
No external components
Applications
•
•
•
•
Computers
Cell Phones
Portable Electronics
µP
Power Supply Monitoring
Pin Configuration
V
CC
3
1
2
NC
NC
5
1
2
4
3
(3 0 0 1 /3 ) R e s e t G N D
(3 0 0 2 ) R e s e t
(3001/3) Reset
V
CC
GND
(3002) Reset
SOT-23 (Top View)
SOT-23-5 (Top View)
1
2
3
(3001/3) Reset
(3002) Reset
V
CC
GND
SOT-89 (Top View)
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Copyright
ANPEC Electronics Corp.
Rev. A.3 - Feb., 2004
1
www.anpec.com.tw
APR3001/2/3
Ordering and Marking Information
APR3001/2/3 -
Lead Free Code
Handling Code
Temp. Range
Package Code
Voltage Code
APR3001/2/3 A/B : 01/2/3 X X
Package Code
A : SOT-23
B : SOT-23-5
D : SOT-89
Temp. Range
I : -40 to 85
°
C
Handling Code
TR : Tape & Reel
Voltage Code :
15 : 1.5V ~ 43 : 4.38V
Lead Free Code
L : Lead Free Device
Blank : Original Device
Date Code
Voltage Code A:1.5V B:1.75V C:2.32V D:2.63V E:2.93V F:3.08V G:3.9V H:4.38V
XXXXX - Date Code
;
15 - 1.5V
APR3001/2/3 -15 D :
APR3001/2/3
XXXXX 15
Absolute Maximum Ratings
Symbol
V
CC
V
RESET
I
MAX
I
RESET
dVcc/dt
T
J
T
L
R
TH,JA
P
D
V
CC
to GND
RESET to GND (Push-Pull Output)
RESET to GND (Open Drain Output)
Maximum Continuous Input Current
RESET/RESET Current
Rate of Rise of V
CC
Junction Temperature Range
Lead Temperature (Soldering, 10 second)
Thermal Resistance – Junction to Ambient
Power Dissipation
SOT-23
SOT-23-5
SOT-89
Parameter
Value
-0.3 to 6
-0.3 to V
CC
+0.3
-0.3 to 6
20
20
100
-40 to 150
260
357
357
180
Internally Limited
Unit
V
V
mA
mA
V/µs
°C
°C
°C/W
W
Pin Function Descrpition
No.
PIN
Name
RESET
(APR3001/3)
RESET
(APR3002)
GND
V
CC
Description
RESET output remains low while V
CC
is below the reset threshold and remains
so for a fixed time period after V
CC
raises above the reset threshold
RESET output remains high while V
CC
is below the reset threshold and remains
so for a fixed time period after V
CC
raises above the reset threshold.
Ground connection
Supply Voltage (+1.2V to +6V)
1
2
3
Note: The pin sequence here might not be correct for all different package types, and please refer pin
configuration in page1 for correct pin assignment.
Copyright
ANPEC Electronics Corp.
Rev. A.3 - Feb., 2004
2
www.anpec.com.tw
APR3001/2/3
Block Diagram
V
c c
Reset
Generator
+ Timer
RESET
Oscillator
V
REF
GND
APR3001
V
c c
Reset
Generator
+ Timer
RESET
Oscillator
V
REF
GND
APR3002
V
c c
RESET
Reset
Generator
+ Timer
Oscillator
V
REF
GND
APR3003
3
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Copyright
ANPEC Electronics Corp.
Rev. A.3 - Feb., 2004
APR3001/2/3
Part Number Description
Part Number
APR3001
APR3002
APR3003
Part Description
Reset Output Push Pull Active Low with Delay
Reset Output Push Pull Active High with Delay
Reset Output Open Drain Active Low with Delay
Electrical Characteristics
V
IN
= 5V, T
A
= -40 to 85°C unless otherwise noted. Typical values are at T
A
=25°C, V
CC
= 5V for 4.38V
versions, V
CC
= 3.3V for 3.08/2.93V versions, V
CC
= 3.0V for 2.63V. versions and V
CC
= 2.5V for 2.32V
versions, V
CC
= 2.0V for 1.75V versions , V
CC
= 1.8V for 1.5V versions.
APR3001/2/3
Symbol
Parameter
Test Conditions
Unit
Min.
Typ.
Max.
V
CC
1.2
6
Supply Voltage
V
I
CC
Supply Current
V
CC
=1.5V~6V
1.5
4
µA
T
A
=-40 to 85°C
3
5
T
A
=25°C
±1.5%
V
TH
Reset Threshold
T
A
=-40 to 85°C
±2%
V
HYST
Hysteresis Range
20
mV
Reset Timeout Period
ms
T
RTP
150
250
350
V
OL
Reset Output Low
I
SINK
=1.2mA
0.5
V
V
OH
Reset Output High
I
SOURCE
=0.6mA
0.8*V
CC
T
D
V
CC
to Reset Delay
V
CC
=V
TH
to (V
TH
-100mV)
25
µS
I
LE
Reset Output Leakage
0.5
µA
Application Circuit
V
CC
V
CC
V
CC
100k
V
CC
V
CC
V
CC
APR3003 RESET
RESET
µ
P
INPUT
APR3001 RESET
APR3002 (RESET)
RESET
µ
P
INPUT
GND
GND
GND
GND
Copyright
ANPEC Electronics Corp.
Rev. A.3 - Feb., 2004
4
www.anpec.com.tw
APR3001/2/3
Timing Chart
Reset Threshold
Reset Threshold
Vcc
(APR3002)
RESET
Reset Timeout Period 250ms
Vcc to Reset Delay 25us
(APR3001/3)
RESET
Copyright
ANPEC Electronics Corp.
Rev. A.3 - Feb., 2004
5
www.anpec.com.tw
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