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APR3101/2/3
MicroPower Microprocessor Reset Circuit with Manual Reset
Features
* * * * * * * 1.2V to 6V Input Voltage Range Low Quiescent Current : less Than 1.5 A 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. Manual Reset Input Reset Timeout Period 250ms Available output configurations - Open-drain output - CMOS active high output - CMOS active low output * * SOT-23-5 package No external components
General Description
The APR3101/2/3 are designed to monitor voltage supplies in P and digital systems. The quiescent current is extremely low, typically 1.5 A, making it ideal for portable battery operated equipment. The APR3101/2/3 operate by monitoring the system power supply voltage. When the input voltage drops below a fixed threshold or whenever manual reset is asserted, the device asserts a reset signal for a fixed time period after Vcc rises above the fixed threshold or manual reset is deasserted. The APR3101/2/3 series is available with three output stage versions:APR3101 pushpull active low output, APR3102 push-pull active high output and APR3103 open drain active low output. The APR3101/2/3 also have a debounced manual reset
Applications * * * *
Computers Cell Phones Portable Electronics P Power Supply Monitoring
input that is provided to override the reset monitor. They are also designed to reject fast line transient glitches on Vcc. The APR3101/2/3 are come in a miniature SOT-23-5 package.
Pin Configuration
VCC MR
5 1 2
4 3
GND NC Reset (3101/3) Reset (3102)
SOT-23-5 (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
APR3101/2/3
Ordering and Marking Information
APR3101/2/3 Lead Free Code Handling Code Temp. Range Package Code Voltage Code Package Code B : SOT-23-5 Temp. Range I : -40 to 85 C Handling Code TR : Tape & Reel Voltage Code : 15 : 1.5V ~ 50 : 5.0V Lead Free Code L : Lead Free Device
Blank : Original Device
APR3101/2/3 B : A1/2/3 X X
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
Absolute Maximum Ratings
Symbol VCC VRESET ICC, IMR IRESET dVcc/dt TJ TL RTH,JA PD TSTG VCC 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 VCC Junction Temperature Range Lead Temperature (Soldering, 10 second) Thermal Resistance - Junction to Ambient Power Dissipation Storage Temperature Range Parameter Value -0.3 to 6 -0.3 to VCC +0.3 -0.3 to 6 20 20 100 -40 to 150 260 357 Internally Limited -65 to +150 Unit V V mA mA V/s C C C/W W C
Pin Function Descrpition
No. 1 2 PIN Name GND NC RESET (APR3101/3) RESET (APR3102) MR Description Ground connection No internal connection RESET output remains low while VCC is below the reset threshold and remains so for a fixed time period after VCC raises above the reset threshold. RESET output remains high while VCC is below the reset threshold and remains so for a fixed time period after VCC raises above the reset threshold.
3
Manual Reset active low input. A logic low signal on MR asserts a reset condition. Asserted reset continues as long as MR is low and for a fixed time period after MR returns high. 5 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. 4
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APR3101/2/3
Block Diagram
MR
Vc c
Reset Generator + Timer
RESET
Oscillator
VREF
GND
APR3101
MR
Vc c
Reset Generator + Timer
RESET
Oscillator
VREF
GND
APR3102
MR RESET
Vc c
Reset Generator + Timer
Oscillator
VREF
GND
APR3103
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APR3101/2/3
Part Number Description
Part Number APR3101 APR3102 APR3103 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
VIN = 5V, TA = -40 to 85C unless otherwise noted. Typical values are at TA=25C, 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. APR3101/2/3 Symbol Parameter Test Conditions Unit Min. Typ. Max. VCC 1.2 6 Supply Voltage V ICC Supply Current VCC=1.5V~6V 1.5 4 A T A=-40 to 85C 3 5 T A=25C 1.5% VTH Reset Threshold T A=-40 to 85C 2% VHYST Hysteresis Range 20 mV Reset Timeout Period ms TRTP 150 250 350 VOL Reset Output Low ISINK=1.2mA 0.5 V VOH Reset Output High ISOURCE=0.6mA 0.8*VCC TD VCC to Reset Delay VCC=VTH to (VTH-100mV) 25 S ILE Reset Output Leakage 0.5 A TMPW MR Minimum Pulse Width 10 S TMRD MR to Reset Delay 0.5 S VMIL MR Input Low Threshold 0.4* VCC V VMIH MR Input High Threshold 0.5* VCC RMR 30 47 70 MR Pull-Up resistance K
Application Circuit
VCC VCC
VCC
100k
VCC
VCC
VCC
APR3103 RESET
RESET P INPUT
APR3101 RESET APR3102 (RESET)
RESET P INPUT
GND
GND
GND
GND
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APR3101/2/3
Timing Chart
Reset Threshold
Reset Threshold
Vcc
(APR3102) RESET Reset Timeout Period 250ms Vcc to Reset Delay 25us
(APR3101/3) RESET MR to Reset Delay 0.5us Reset Timeout Period 250ms
MR
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APR3101/2/3
Typical Characteristics
Supply Current vs. Supply Voltage
2
120
Maximum Transient Duration vs. Reset Threshold Overdrive VTH - VCC
Maximum Transient Duration (us)
1.6
100
Supply Current (uA)
generate a reset signal
80
1.2
60
0.8
40
0.4
20
never generate a reset signal
0 0 1 2 3 4 5 6
0 10 100 1000
Supply Voltage (V)
Reset Threshold Overdrive VTH - VCC (mV)
Output Source Current vs. Reset High Output Voltage
70 Vcc=5V
Output Sink Current vs. Reset Low Output Voltage
50 45 Vcc=2.9V
Output Source Current (mA)
Output Sink Current (mA)
60 50 40 30 20 10 0 0 1 2 3 4 5 6 Vcc=3V
40 35 30 25 20 15 10 5 0 0 1 2 3 4 5 6 Vcc=1.5 Vcc=2V Vcc=2.5V
Vcc=4V
Reset High Output Voltage (V)
Reset Low Output Voltage (V)
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APR3101/2/3
Typical Characteristics
Normalized Reset Threshold vs. Temperature
Normalized Reset Threshold (%)
1.008 1.006 1.004 1.002 1 0.998 0.996 0.994 -40 -20 0 20 40 60 80 100 120
Reset Propagation Delay vs. Temperature
60
Reset Propagation Delay (us)
50 40 VOD=100mV 30 20 10 0 -40 -20 0 20 40 60 80 100 120
Temperature (C)
Temperature (C)
Reset Timeout Period vs. Temperature
600
Supply Current vs. Temperature
3.5 3
Reset Timeout Period (ms)
500
Supply Current (uA)
2.5 2 1.5 1 0.5 0
400 300 200 100 0 -40 -20 0 20 40 60 80 100 120
Vcc=5V
Vcc=3V
-40
-20
0
20
40
60
80
100 120
Temperature (C)
Temperature (C)
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APR3101/2/3
Typical Characteristics
Power Up
Vcc(2V/div) Vcc(2V/div)
Power Down
RESET(2V/div)
RESET(2V/div) MR(2V/div) MR(2V/div)
Time (50ms/div)
Time (500ms/div)
MR to Reset Delay
Vcc(2V/div)
Vcc to RESET Delay
Vcc(0.5V/div) Vcc=VTH to (VTH-100mV)
RESET(2V/div) RESET(2V/div)
MR(2V/div)
Time (0.2us/div)
Time (10us/div)
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APR3101/2/3
Typical Characteristics
Manual Reset
Vcc(2V/div)
RESET(2V/div) MR(2V/div)
Time (100ms/div)
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APR3101/2/3
Application Information
VCC Transient Rejection
The APR3101/2/3 have the function to reject the transient glitches from the power line. The Maximum Transient Duration vs. Reset Threshold Overdrive shows at Typical Characteristics. The transient voltage with the duration under the curve will not generate a reset signal, e.g. a transient of 100mV below the reset threshold voltage have the duration more than 35us, it will generate a reset signal. Connect a 0.1uF bypass capacitor to the VCC pin can improve the transient immunity. the IC is shutdown, and the output becomes a floating state. If it is a trouble, a resistor should be connected from reset output to ground to keep the reset output low (see Figure 1). For The APR3102, a pull-up resistor to VCC is required to keep the valid reset output for VCC below 1.2V.@ @ @
VCC
VCC
Manual Reset Input
R E S ET
Force the MR low asserts the reset signal, asserted reset continues as long as MR is low and after the MR goes high the reset signal is maintained for a fixed timeout period. The MR is internally connected a 47k resistor to VCC, so it can be floating if MR is not used. The MR input also has a debounce time 500ns to avoid the glitches. It allows use of a mechanical switch or a TTL, and CMOS logic signal.
GND
100K
Figure 1. Ensuring RESET Valid to VCC = 0 V
+3.3V
+5.0V
Reset Output
VCC VCC 100k
R E SE T 5V IN P UT S ystem
The APR3101/2/3 have 3 output stage versions: APR3101 is an active low push-pull output,when the VCC drops below the reset threshold or MR goes low, the RESET output generates a low signal. APR3102 is an active high push-pull output, when the VCC drops below the reset threshold or MR goes low; the RESET output generates a high signal (see Timing Chart). APR3103 is an active low open drain output, the RESET output must be connected a pull-up resistor to a supply voltage that is lower than 6V, it suits to use in multiple voltage systems (see Figure 2). The APR3101 RESET output is valid until the VCC=1.2V, below 1.2V
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A P R3103 MR R E SE T
GND
GND
Figure 2. APR3103 Open Drain Output with Multiple Supplies
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APR3101/2/3
Packaging Information
SOT-23-5
e1
5
4 E1 E
1
2
3
e
b
D
A2
A
a
L1
A1
L2
L
Dim A A1 A2 b D E E1 e e1 L L1 L2 N
M illimet ers M in. 0.95 0.05 0.90 0.30 2.8 2.6 1.5 0.95BSC 1.90BSC 0.35 0.20 BSC 0.5 5 0 10 0 0.7 0.020 0.55 0.014 M ax. 1.45 0.15 1.30 0.50 3.00 3.00 1.70 M in. 0.037 0.002 0.035 0.011 0.110 0.102 0.059
Inches M ax. 0.057 0.006 0.051 0.019 0.118 0.118 0.067 0.037BSC 0.074BSC 0.022 0.008 BSC 0.028 5 10
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APR3101/2/3
Physical Specifications
Terminal Material Lead Solderability Solder-Plated Copper (Solder Material : 90/10 or 63/37 SnPb), 100%Sn Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3.
Reflow Condition
TP
(IR/Convection or VPR Reflow)
tp C ritical Zone T L to T P
R am p-up
T e m p e ra tu re
TL T sm ax
tL
T sm in R am p-down ts Preheat
25
t 25 C to Peak
T im e
Classificatin Reflow Profiles
Profile Feature Average ramp-up rate (TL to TP) Preheat - Temperature Min (Tsmin) - Temperature Mix (Tsmax) - Time (min to max)(ts) Tsmax to TL - Temperature(TL) - Time (tL) Peak Temperature(Tp) Sn-Pb Eutectic Assembly Large Body Small Body 3C/second max. 100C 150C 60-120 seconds Pb-Free Assembly Large Body Small Body 3C/second max. 150C 200C 60-180 seconds 3C/second max 183C 60-150 seconds 217C 60-150 seconds
Time within 5C of actual Peak 225 +0/-5C 240 +0/-5C 245 +0/-5C 250 +0/-5C Temperature(tp) Ramp-down Rate 10-30 seconds 10-30 seconds 10-30 seconds 20-40 seconds Time 25C to Peak Temperature 6C/second max. 6C/second max. 6 minutes max. 8 minutes max. Note: All temperatures refer to topside of the package. Measured on the body surface.
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APR3101/2/3
R e lia b ilit y te s t p r o g r a m
Te s t ite m S O L D E R A B IL IT Y H O LT PCT TST ESD L a tc h -U p M e th o d M IL -S T D -8 8 3 D -2 0 0 3 M IL -S T D -8 8 3 D -1 0 0 5 .7 J E S D -2 2 - B , A 1 0 2 M IL -S T D -8 8 3 D -1 0 11 .9 M IL -S T D -8 8 3 D -3 0 1 5 .7 JESD 78 D e s c rip tio n 2 45 C , 5 S E C 1 0 0 0 H rs B ia s @ 1 2 5 C 1 6 8 H rs , 1 0 0 % R H , 1 2 1 C -6 5 C ~ 1 5 0 C , 2 0 0 C y c le s V H B M > 2 K V, V M M > 2 0 0 V 1 0 m s , I tr > 1 0 0 m A
Carrier Tape
t P P1 D
Po E
F W
Bo
Ao
Ko D1
T2
J C A B
T1
Application
A 1781
B 72 1.0 D 1.5 +0.1
C
J
T1 8.4 2 P1
T2 1.5 0.3 Ao
13.0 + 0.2 2.5 0.15 D1 1.5 +0.1 Po 4.0 0.1
W 8.0+ 0.3 - 0.3 Bo 3.2 0.1
P 4 0.1 Ko 1.4 0.1
E 1.75 0.1 t 0.20.03
SOT-23-5
F 3.5 0.05
2.0 0.1 3.15 0.1
(mm)
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APR3101/2/3
Cover Tape Dimensions
Application SOT- 23 Carrier Width 8 Cover Tape Width 5.3 Devices Per Reel 3000
Customer Service
Anpec Electronics Corp. Head Office : 5F, No. 2 Li-Hsin Road, SBIP, Hsin-Chu, Taiwan, R.O.C. Tel : 886-3-5642000 Fax : 886-3-5642050 Taipei Branch : 7F, No. 137, Lane 235, Pac Chiao Rd., Hsin Tien City, Taipei Hsien, Taiwan, R. O. C. Tel : 886-2-89191368 Fax : 886-2-89191369
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