Advanced Analog Technology, Inc. AAT1011A 3-CHANNEL PC POWER SUPPLY SUPERVISOR FOR 3.3V, 5V AND 12V Features General Description z 3-Channel PC Power Supply Supervisor with Minimized External Components z Over Voltage Protection for 3.3V / 5V / 12V Output z Under Voltage Protection for 3.3V / 5V Output with 75 ms Enable Delay z Fault Protection Output with Open Drain Output z Open Drain Power Good Output z 300 ms Power Good Delay z 2.3 ms ONCTL to FPO Turn Off Delay z 49 ms ONCTL Signal De-bounce z 73 µs De-bounce z Latch Function Controlled by ONCTL and Protection Input z 8KV Highly Qualified ESD Protection 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. Pin Configuration TOP VIEW PGI 1 8 PGO GND 2 7 Vcc FPO 3 6 V5 ONCTL 4 5 V33 (PDIP-8 PACKAGE) *Spec is subject to change without notice in this document. – 台灣類比科技股份有限公司 – 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. 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. 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. 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 . – 台灣類比科技股份有限公司 – 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 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 Recommended Operating Conditions Test Condition Supply voltage, VCC Input voltage, VI Min Typ Max 4 Output voltage Output sink current, IO (sink) ONCTL , V5, V33, PGI VFPO VPGO IFPO IPGO Supply voltage rising time, tr See Note 1 1 Unit 15 7 V V 15 7 30 10 V V mA mA ms Note 1: VCC slew rate must be less than 14 V/ms. – 台灣類比科技股份有限公司 – 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 3.7 5.7 13.3 2.71 4.1 3.9 6.1 13.8 2.83 4.3 3.8 4.1 6.5 14.3 2.95 4.47 Min Typ Max Unit PGO = 5 V Isink = 10 mA 5 0.4 µA V V( FPO ) = 5 V Isink = 10 mA Isink = 30 mA 5 0.3 0.7 µA V Max Unit 1.141 1.192 1.242 150 2.0 0.8 V µA V V V33 Over voltage threshold V5 VCC Under-voltage V33 threshold V5 VCC Unit V V PGO and FPO Parameter ILKG Leakage current (PGO) VOL Low level output voltage (PGO) ILKG Leakage current ( FPO ) VOL Low level output voltage ( FPO ) Test Condition PGI and ONCTL Parameter Test Condition Input threshold voltage (PGI) Input pull-up current ( ONCTL ) ONCTL = 0 V High-level input voltage ( ONCTL ) Low-level input voltage ( ONCTL ) Min Typ Operating Current Parameter ICC Supply current Test Condition Min Typ ONCTL = 5 V Max Unit 1 mA Switching Characteristics, VCC = 5V, Top = Full Range Parameter 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 Test Condition Min Typ Max Unit 200 49 300 75 450 114 ms ms tb1+1.1 tb1+2.3 tb1+4.4 ms 32.7 47 – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. 49 73 73.5 110 ms µs V 1.0 Advanced Analog Technology, Inc. AAT1011A Function Block Diagram Vcc UVLO Power on Reset VINT OV12 GND Reset V INT =3.58 V Level Shift Vref FPO R OV12 POD 73 µs Debounce Vref OV5 S R Reset R Vref POD2 S Q Q R OV33 R V5 UV5 OV5 UV33 OV33 75 ms Delay R V33 Level Shift 73 µs Debounce PGO Vref R UV5 Q POD 73 µs Debounce Vref UV33 300 ms CLR Delay Vref PGI Reset POD2 POD Oscillator Vcc Reset 150 uA ONCTL 49 ms Debounce POD * 2.3 ms CLR Delay VBG =1.28 Bandgap Reference – 台灣類比科技股份有限公司 – 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 td1 tb1 Protection Occur td1 tb1 td3 PG OFF delay ONCTL OFF ONCTL ON – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. AC OFF V 1.0 Advanced Analog Technology, Inc. AAT1011A Package Dimension (Unit: Mil) 35020 10 250 4 R40 312 12 R10Max (4X) 654 554 374 10 7Typ. 115Min. 15 Min. 355 310Max. 100Typ. 605 Typ. 182Typ. – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. V 1.0