3-Channel Power Supply Supervisor Over Voltage Protection Lock
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APW1681
3-Channel Power Supply Supervisor
Over Voltage Protection Lock
General Description
APW1681 designed minimize external components personal-computer switching power supply systems. provides protection circuits, power good indicator, fault protection output PSON control. (over voltage protection) monitors 3.3V, detects terminal). (under voltage protection) monitors 3.3V When condition detected, (power good output) latched high. PSON from high resets protection latch. There 2.36ms turn-off delay from PSON There delay during turn Power good feature monitors PGI, 3.3V under voltages, issues power good signal when they ready.
Under Voltage Protection Lock
Fault Protection Output with Open Drain Output Stage
Open Drain Power Good Output Signal Power Good Input, Power Good Delay 2.36 PSON Control Turn-Off Delay PSON Control Debounce
Delay 3.3V Under Voltage
Protection
Width Noise Deglitches Wide Power Supply Voltage Range from Intelligent Under Voltage Protection vent Instantaneously Power Black
Description
Applications
Switching Power Supply
PSON
VS33
Ordering Information
APW1681
Handling Code Temp. Range Package Code Package Code Temp. Range Handling Code Tube
ANPEC reserves right make changes improve reliability manufacturability without notice, advise customers obtain latest version relevant information verify before placing orders. Copyright ANPEC Electronics Corp. Rev. Feb., 2001 www.anpec.com.tw
APW1681
Block Diagram
VREF RL=100k
Reset
Vreg VDD=3.5V
Bandgap Reference VREF 1.192V
73µs Debounce 73µs Debounce
VREF
RL=100k VS33
2.36 Delay
Reset Dominent Latch Reset 38ms Debounce
150µA
PSON
VREF
75ms Delay Counter
RL=100k VREF VREF
300ms Delay Counter
73µs Debounce
VREF
Absolute Maximum Ratings
Symbol VS5, VS33 PSON Parameter Supply Voltage 3.3V Input Voltage(Note Fault Protection Output Voltage ON/O Control Input Voltage(Note Power Input Voltage(Note Power utput Voltage(Note bient perature Range Storage perature ange Lead Temperature (Soldering, second) Rating +150 Unit
Note short period sec) over voltage test, these pins withstand 12V.
Copyright ANPEC Electronics Corp. Rev. Feb., 2001
www.anpec.com.tw
APW1681
Function Description
Terminal Name VS33 PSON over/under voltage protection input over/under voltage protection input Ground Inverted fault protection output, open drain output stage Power good input signal Power good output signal pin, open drain output stage ON/OFF control input Supply voltage/12 over voltage protection input Terminal Function Description
Thermal Characteristics
Symbol RTHJA Parameter Thermal Resistance from Junction Ambient Free DIP-8 Value Unit
Electrical Characteristics
Symbol Parameter
VCC=5V, TA=25°C unless otherwise noted)
Test Conditions APW1681 Min. Typ. 13.8 Max. 14.3 1.14 1.19 1.24 2.83 Unit
Over Voltage Protection Over Voltage Threshold VS33 ILKG Leakage Current Level Output Voltage Pull High Voltage Input Threshold Voltage (PGI) Under Voltage threshold VS33 Under Voltage Protection Delay Time (3.3V )=5V ISINK= 10mA ISINK= 30mA 2.55 13.3
Copyright ANPEC Electronics Corp. Rev. Feb., 2001
www.anpec.com.tw
APW1681
Electrical Characteristics (Cont.)
PSON ll-U PSON litc PSON PSON PSON itio 1680
Typical Application Circuit
APW1681 0.5V Drop
PSON
PSON
VS33
Copyright ANPEC Electronics Corp. Rev. Feb., 2001
www.anpec.com.tw
APW1681
Timing Chart
Reset
PSON
3.3V
Protection Occur
Delay
PSON PSON
Copyright ANPEC Electronics Corp. Rev. Feb., 2001
www.anpec.com.tw
APW1681
Packaging Information
PDIP-8 Reference JEDEC Registration MS-001)
Min. 0.38 2.92 9.02
Millimeters Max. 5.33 3.68 10.16 2.54BSC 0.36 1.14 7.62 6.10 2.92 7.11 10.92 3.81 0.240 0.115 0.56 1.78 0.014 0.045 Min. 0.015 0.115 0.355
Inches Max. 0.210 0.145 0.400 0.100BSC 0.022 0.070 0.300 0.280 0.430 0.150
Copyright ANPEC Electronics Corp. Rev. Feb., 2001
www.anpec.com.tw
APW1681
Customer Service
Anpec Electronics Corp. Head Office Li-Hsin Road, SBIP, Hsin-Chu, Taiwan, R.O.C. 886-3-5642000 886-3-5642050 Taipei Branch 137, Lane 235, Chiao Rd., Hsin Tien City, Taipei Hsien, Taiwan, 886-2-89191368 886-2-89191369
Copyright ANPEC Electronics Corp. Rev. Feb., 2001
www.anpec.com.tw
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