AAT1011A AAT | Alldatasheet

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Features

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 Pin Configuration 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. *Spec is subject to change without notice in this document. PGI GND FPO ONCTL PGO Vcc V33 TOP VIEW (PDIP-8 PACKAGE)

Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. V 1.0 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

Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. V 1.0 AAT1011A Pin Description Pin # Name I/O

Description

O Inverted Fault Protection Output, open drain output stage ONCTL I ON/OFF control input V33 I Over and Under Voltage Protection for 3.3V I Over and Under Voltage Protection for 5V VCC I Supply voltage and 12V over voltage protection input PGO O Power Good Output signal, open drain output stage Absolute Maximum Ratings CHARACTERISTICS SYMBOL VALUE UNIT Supply voltage VCC V ESD voltage VESD KV FPO output voltage VFPO V PGO output voltage VPGO V Supply Current ICC mA Operating free-air temperature range Top -25 ~ 85 oC Storage temperature range Tstg -65 ~ 125 oC Recommended Operating Conditions Test Condition Min Typ Max Unit Supply voltage, VCC V Input voltage, VI ONCTL , V5, V33, PGI V VFPO V Output voltage VPGO V IFPO mA Output sink current, IO (sink) IPGO mA Supply voltage rising time, tr See Note 1 ms Note 1: VCC slew rate must be less than 14 V/ms.

Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. V 1.0 AAT1011A Electrical Characteristics, VCC = 5 V (Unless Otherwise Specified) Over Voltage Protection and Under Voltage Protection Parameter Test Condition Min Typ Max Unit V33 3.7 3.9 4.1 5.7 6.1 6.5 Over voltage threshold VCC 13.3 13.8 14.3 V V33 2.71 2.83 2.95 V 5 4.1 4.3 4.47 Under-voltage threshold VCC 3.8 V PGO and FPO Parameter Test Condition Min Typ Max Unit ILKG Leakage current (PGO) PGO = 5 V µA VOL Low level output voltage (PGO) Isink = 10 mA 0.4 V ILKG Leakage current ( FPO ) V( FPO ) = 5 V µA Isink = 10 mA 0.3 VOL Low level output voltage ( FPO ) Isink = 30 mA 0.7 V PGI and ONCTL Parameter Test Condition Min Typ Max Unit Input threshold voltage (PGI) 1.141 1.192 1.242 V Input pull-up current (ONCTL ) ONCTL = 0 V 150 µA High-level input voltage (ONCTL ) 2.0 V Low-level input voltage (ONCTL ) 0.8 V Operating Current Parameter Test Condition Min Typ Max Unit ICC Supply current ONCTL = 5 V mA Switching Characteristics, VCC = 5V, Top = Full Range Parameter Test Condition Min Typ Max Unit td1 PGO delay time 200 300 450 ms td2 Under Voltage Protection delay time 114 ms td3 ONCTL off to FPO delay time tb1+1.1 tb1+2.3 tb1+4.4 ms tb1 ONCTL de-bounce time 32.7 73.5 ms tb2 Noise de-bounce time 110 µs

Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. V 1.0 AAT1011A Function Block Diagram Vref Power on Reset Reset VINT VINT =3.58 V UVLO PGI Vref 300 ms Delay CLR POD Vref 73 µs Debounce R 73 µs Debounce R 75 ms Delay R Bandgap Reference VBG =1.28 ONCTL 150 uA Vcc 49 ms Debounce Reset POD Oscillator Reset POD POD2 2.3 ms Delay CLR Vcc GND V33 UV5 UV33 UV5 OV5 UV33 OV33 OV12 Vref 73 µs Debounce R Vref Vref POD POD2 R Reset R S OV12 OV5 OV33 Q S R Q Q FPO Level Shift PGO Level Shift

Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. V 1.0 AAT1011A Timing Chart AAT1011 Vcc Reset R ONCTL S Q FPO PGI 3.3 V 5 V 12 V PGO td1 td1 td1 tb1 tb1 Protection Occur ONCTL OFF ONCTL ON PG OFF delay AC OFF td3

Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. V 1.0 AAT1011A Package Dimension (Unit: Mil) 355 R40 7Typ. 654 R10Max (4X) 554 100Typ. 374 10 35020 250 4 312 12 605 182Typ. Typ. 15 Min. 310Max. 115Min.