Copyright ANPEC Electronics Corp.
Rev. A.2 - Oct., 2003
APR3001/2/3
www.anpec.com.tw1
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.
MicroPower Microprocessor Reset Circuit 5555555555.9
Features General Description
Applications
•
Computers
• Cell Phones
• Portable Electronics
• µP Power Supply Monitoring
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 available with three output stage versions : APR3001
push-pull active low output, APR3002 push-pull active high output and APR3003 open drain active low
output. They are also designed to reject fast line transient glitches on Vcc. The APR3001/2/3 are come in
a miniature SOT-23, SOT-23-5, SOT-89 packages.
• 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
• SOT-23 , SOT-23-5 and SOT-89 packages
• No external components
Pin Configuration
SOT-23 (Top View)
Reset
12
3
GND
V
CC
Reset
(3001/3)
(3002)
SOT-23-5 (Top View)
SOT-89 (Top View)
VCCGND
NCNC
123
45
Reset
Reset
(3001/3)
(3002)
GNDV
CC
213
Reset
Reset
(3001/3)
(3002)
Copyright ANPEC Electronics Corp.
Rev. A.2 - Oct., 2003
APR3001/2/3
www.anpec.com.tw2
Package Code
A : SOT-23 B : SO T-2 3-5 D : SO T -89
Temp. Range
C : 0 to 7 0 C I : -40 to 85 C
Handling Code
TR : Tape & Reel
Voltage Code :
15 : 1.5V ~ 43 : 4.38V
APR30 01/2/3 -
Handling Code
Temp. Range
Package Code
Voltage Code
Date C od e
X X
Voltage Code
01/2/3
APR3001/2/3
XXXXX 15
XXXXX - Date Code ; 15 - 1.5VAPR3001/2/3 -15 D :
APR3001/2/3 A/B :
A:1.5V B:1.75V C:2.32V D:2.63V E:2.93V F:3.08V G:3.9V H:4.38V
Ordering and Marking Information
°°
Absolute Maximum Ratings
Symbol Parameter Value Unit
VCC V
CC
to GND -0.3 to 6 V
RESET to GND (Push-Pull Output) -0.3 to VCC +0.3
V
RESET
RESET to GND (Open Drain Output) -0.3 to 6
V
I
MAX
Maximum Continuous Input Current 20 mA
I
RESET
RESET/RESET Current 20 mA
dVcc/dt Rate of Rise of VCC 100
V/µs
TJ Junction Temperature Range -40 to 150 °C
TL Lead Temperature (Soldering, 10 second) 260 °C
SOT-23 357
SOT-23-5 357
R
TH,JA
Thermal Resistance – Junction to Ambient
SOT-89 180
°C/W
PD Power Dissipation Internally Limited W
Pin Function Descrpition
PIN
No. Name
Description
RESET
(APR3001/3)
RESET output remains l ow while VCC is below the reset thr eshold and remains
so for a fixed time period after VCC raises above the reset threshold
1
RESET
(APR3002)
RESET output rem ains high while V
CC
is below the res et threshold and rem ains
so for a fixed time period after VCC raises above the reset threshold.
2 GND Ground connection
3 VCC Supply Voltage (+1.2V to +6V)
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.2 - Oct., 2003
APR3001/2/3
www.anpec.com.tw3
Block Diagram
V
c c
GND
V
REF
Reset
Generator
+ Timer
Oscillator
RESET
APR3001
V
c c
GND
V
REF
Reset
Generator
+ Timer
Oscillator
RESET
APR3002
V
c c
GND
V
REF
Reset
Generator
+ Timer
Oscillator
RESET
APR3003
Copyright ANPEC Electronics Corp.
Rev. A.2 - Oct., 2003
APR3001/2/3
www.anpec.com.tw4
Part Number Description
Part Number Part Description
APR3001 Reset Output Push Pull Active Low with Delay
APR3002 Reset Output Push Pull Active High with Delay
APR3003 Reset Output Open Drain Active Low with Delay
Electrical Characteristics
VIN = 5V, TA = -40 to 85°C unless otherwise noted. T ypical values are at TA=25°C, VCC = 5V for 4.38V
versions, VCC = 3.3V for 3.08/2.93V versions, VCC = 3.0V for 2.63V. versions and VCC = 2.5V for 2.32V
versions, VCC = 2.0V for 1.75V versions , VCC = 1.8V for 1.5V versions.
APR3001/2/3
Symbol
Parameter Test Conditions
Min. Typ. Max.
Unit
VCC
Supply Voltage
1.2 6
V
ICC
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%
VTH
Reset Threshold
T
A
=-40 to 85°C ±2%
V
HYST
Hysteresis Range 20 mV
T
RTP
Reset Timeout Period
150 250 350
ms
VOL
Reset Output Low I
SINK
=1.2mA 0.5 V
VOH
Reset Output High I
SOURCE
=0.6mA 0.8*VCC
TD
V
CC
to Reset Delay VCC=VTH to (VTH-100mV) 25
µS
ILE
Reset Output Leakage 0.5
µA
V
CC
V
CC
GND
100k
APR3003 RESET
RESET
INPUT
µP
V
CC
GND
V
CC
V
CC
GND
RESET
(RESET)
RESET
INPUT
µP
V
CC
GND
APR3001
APR3002
Application Circuit
Copyright ANPEC Electronics Corp.
Rev. A.2 - Oct., 2003
APR3001/2/3
www.anpec.com.tw5
Timing Chart
Vcc
RESET
Reset Timeout Period 250ms
Vc c t o Res et Delay 25us
Reset Threshold Reset Threshold
RESET
(APR3002)
(APR3001/3)