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| Advanced Analog Technology, Inc. AAT1011A 3-CHANNEL PC POWER SUPPLY SUPERVISOR FOR 3.3V, 5V AND 12V Features 3-Channel PC Power Supply Supervisor with Minimized External Components Over Voltage Protection for 3.3V / 5V / 12V Output Under Voltage Protection for 3.3V / 5V Output with 75 ms Enable Delay Fault Protection Output with Open Drain Output Open Drain Power Good Output 300 ms Power Good Delay 2.3 ms ONCTL to FPO Turn Off Delay General Description The AAT1011 is a 3-channel power supply supervisor with 8KV ESD protection. It provides Over Voltage Protection (OVP), Under Voltage Protection (UVP), and Power Good Indicator to monitor and control the output of the switching power supply system. Remote function from external signal, i.e., On/Off Control ( ONCTL ), is also implemented. Over voltage fault protection and under voltage fault protection can be directly triggered without external voltage divider. With a minimum number of external components, the AAT1011 offers a simple and cost effective solution. Meanwhile, it can greatly reduce the PCB board space for power supply system. 49 ms ONCTL Signal De-bounce 73 s De-bounce Latch Function Controlled by ONCTL and Protection Input 8KV Highly Qualified ESD Protection Pin Configuration TOP VIEW PGI GND FPO 1 2 3 8 PGO 7 Vcc 6 V5 5 V33 ONCTL 4 (PDIP-8 PACKAGE) *Spec is subject to change without notice in this document. - - xAEWAniN/|-1/2q Advanced Analog Technology, Inc. V 1.0 Advanced Analog Technology, Inc. AAT1011A FPO (Fault Protection Output) NORMAL="LOW", FAULT="HIGH" FPO indicates the fault condition of either Over Voltage or Under Voltage. When a fault state occurs, the FPO latched high and combined with a low PGO output. PGO (Power Good Output) NORMAL="HIGH", FAULT="LOW". The Power Good signal will be issued with 300 ms delay after 3.3V, 5V, 12V and PGI are ready. Power Good Output should be low before the output voltage is out of regulation at turn-off. OVP and UVP OVP monitors 3.3V, 5V, and 12V (via Vcc pin) UVP monitors 3.3V and 5V. OVP and UVP levels are determined by internal voltage dividers. The typical values are 3.9V, 6.1V, 13.8V for OVP and 2.83V, 4.3V for UVP, respectively. ONCTL (On/Off Control) On/Off Control is used to reset the latched state of FPO and to externally control the switching power supply system with a 49 ms de-bounce time. AAT1011 offers 2.3 ms delay time after de-bounce to trigger FPO when ONCTL switches from low to high . - - xAEWAniN/|-1/2q Advanced Analog Technology, Inc. V 1.0 Advanced Analog Technology, Inc. AAT1011A Pin Description Pin # Name I/O Description 1 PGI I Power Good Input signal 2 GND Ground O Inverted Fault Protection Output, open drain output stage 3 FPO 4 ONCTL I ON/OFF control input 5 V33 I Over and Under Voltage Protection for 3.3V 6 V5 I Over and Under Voltage Protection for 5V 7 VCC I Supply voltage and 12V over voltage protection input 8 PGO O Power Good Output signal, open drain output stage Absolute Maximum Ratings CHARACTERISTICS Supply voltage ESD voltage FPO output voltage PGO output voltage Supply Current Operating free-air temperature range Storage temperature range Recommended Operating Conditions Test Condition Min Typ Max Unit SYMBOL VCC VESD VFPO VPGO ICC Top Tstg VALUE 16 8 16 8 1 -25 ~ 85 -65 ~ 125 UNIT V KV V V mA o C o C Supply voltage, VCC Input voltage, VI Output voltage Output sink current, IO (sink) Supply voltage rising time, tr 4 ONCTL , V5, V33, PGI VFPO VPGO IFPO IPGO See Note 1 1 15 7 15 7 30 10 V V V V mA mA ms Note 1: VCC slew rate must be less than 14 V/ms. - - xAEWAniN/|-1/2q Advanced Analog Technology, Inc. V 1.0 Advanced Analog Technology, Inc. AAT1011A Electrical Characteristics, VCC = 5 V (Unless Otherwise Specified) Over Voltage Protection and Under Voltage Protection Parameter Test Condition Min Typ Max Unit V33 Over voltage threshold V5 VCC Under-voltage V33 threshold V5 VCC PGO and FPO Parameter Test Condition 3.7 5.7 13.3 2.71 4.1 3.9 6.1 13.8 2.83 4.3 3.8 Typ 4.1 6.5 14.3 2.95 4.47 V V Min Max Unit ILKG Leakage current (PGO) VOL Low level output voltage (PGO) ILKG Leakage current ( FPO ) VOL Low level output voltage ( FPO ) PGI and ONCTL Parameter PGO = 5 V Isink = 10 mA V( FPO ) = 5 V Isink = 10 mA Isink = 30 mA 5 0.4 5 0.3 0.7 A V A V Test Condition Min Typ Max Unit Input threshold voltage (PGI) Input pull-up current ( ONCTL ) ONCTL = 0 V High-level input voltage ( ONCTL ) Low-level input voltage ( ONCTL ) Operating Current Parameter Test Condition 1.141 1.192 1.242 150 2.0 0.8 V A V V Min Typ Max Unit ICC Supply current ONCTL = 5 V 1 mA Switching Characteristics, VCC = 5V, Top = Full Range Parameter Test Condition Min Typ Max Unit td1 td2 td3 tb1 tb2 PGO delay time Under Voltage Protection delay time ONCTL off to FPO delay time ONCTL de-bounce time Noise de-bounce time 200 49 300 75 450 114 ms ms tb1+1.1 tb1+2.3 tb1+4.4 ms 32.7 47 49 73 73.5 110 ms s - - xAEWAniN/|-1/2q Advanced Analog Technology, Inc. V 1.0 Advanced Analog Technology, Inc. AAT1011A Function Block Diagram Vcc UVLO OV12 GND VINT VINT =3.58 V Power on Reset Reset Level Shift R POD Vref OV5 Reset Vref OV33 R R 73 s Debounce S POD2 Q Q FPO Vref OV12 S R R V5 UV5 V33 UV33 OV33 73 s Debounce Vref UV5 POD Vref UV33 Vref PGI Reset Vcc Reset 150 uA ONCTL 49 ms Debounce POD POD2 POD Oscillator 73 s Debounce 300 ms CLR Delay R Q OV5 75 ms Delay R Level Shift PGO * 2.3 ms CLR Delay VBG =1.28 Bandgap Reference - - xAEWAniN/|-1/2q Advanced Analog Technology, Inc. V 1.0 Advanced Analog Technology, Inc. AAT1011A Timing Chart AAT1011 Vcc Reset R ONCTL S Q FPO PGI 3.3 V 5V 12 V PGO td1 tb1 td1 tb1 td3 td1 PG OFF delay Protection Occur ONCTL OFF ONCTL ON AC OFF - - xAEWAniN/|-1/2q Advanced Analog Technology, Inc. V 1.0 Advanced Analog Technology, Inc. AAT1011A Package Dimension (Unit: Mil) R10Max (4X) 312 12 R40 250 4 654 554 310Max. 374 10 7Typ. 355 115Min. 100Typ. 605 Typ. 182Typ. - - xAEWAniN/|-1/2q Advanced Analog Technology, Inc. 15 Min. 10 35020 V 1.0 |
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