3-CHANNEL POWER SUPPLY SUPERVISOR 3.3V, Features 3-Channel Power

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3-CHANNEL POWER SUPPLY SUPERVISOR 3.3V, Features 3-Channel Power

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AAT1011A
3-CHANNEL POWER SUPPLY SUPERVISOR 3.3V,
Features 3-Channel Power Supply Supervisor with Minimized External Components Over Voltage Protection 3.3V Output Under Voltage Protection 3.3V Output with Enable Delay Fault Protection Output with Open Drain Output Open Drain Power Good Output Power Good Delay ONCTL Turn Delay
General Description
AAT1011 3-channel power supply supervisor with protection. provides Over Voltage Protection (OVP), Under Voltage Protection (UVP), Power Good Indicator monitor control output switching power supply system. Remote function from external signal, i.e., On/Off Control ONCTL also implemented. Over voltage fault protection under voltage fault protection directly triggered without external voltage divider. With minimum number external components, AAT1011 offers simple cost effective solution. Meanwhile, greatly reduce board space power supply system.
ONCTL Signal De-bounce De-bounce Latch Function Controlled ONCTL Protection Input Highly Qualified Protection
Configuration
VIEW
ONCTL
(PDIP-8 PACKAGE)
*Spec subject change without notice this document.
Advanced Analog Technology, Inc.
January 2004
AAT1011A
(Fault Protection Output) NORMAL="LOW", FAULT="HIGH" indicates fault condition either Over Voltage Under Voltage. When fault state occurs, latched high combined with output. (Power Good Output) NORMAL="HIGH", FAULT="LOW". Power Good signal will issued with delay after 3.3V, ready. Power Good Output should before output voltage regulation turn-off. monitors 3.3V, (via pin) monitors 3.3V levels determined internal voltage dividers. typical values 3.9V, 6.1V, 13.8V 2.83V, 4.3V UVP, respectively.
ONCTL (On/Off Control) On/Off Control used reset latched state externally control switching power supply system with de-bounce time. AAT1011 offers delay time after de-bounce trigger when ONCTL switches from high
Advanced Analog Technology, Inc.
January 2004
AAT1011A
Description Name Description Power Good Input signal Ground Inverted Fault Protection Output, open drain output stage ONCTL ON/OFF control input Over Under Voltage Protection 3.3V Over Under Voltage Protection Supply voltage over voltage protection input Power Good Output signal, open drain output stage Absolute Maximum Ratings CHARACTERISTICS Supply voltage voltage output voltage output voltage Supply Current Operating free-air temperature range Storage temperature range Recommended Operating Conditions
SYMBOL VESD VFPO VPGO Tstg
VALUE
UNIT
Test Condition
Unit
Supply voltage, Input voltage, Output voltage Output sink current, (sink) Supply voltage rising time,
ONCTL V33, VFPO VPGO IFPO IPGO Note
Note slew rate must less than V/ms.
Advanced Analog Technology, Inc.
January 2004
AAT1011A
Electrical Characteristics, (Unless Otherwise Specified) Over Voltage Protection Under Voltage Protection
Parameter Test Condition Unit
Over voltage threshold Under-voltage threshold
Parameter Test Condition
13.3 2.71
13.8 2.83
14.3 2.95 4.47
Unit
ILKG Leakage current (PGO) level output voltage (PGO) ILKG Leakage current level output voltage ONCTL
Parameter
Isink Isink Isink
Test Condition
Unit
Input threshold voltage (PGI) Input pull-up current ONCTL ONCTL High-level input voltage ONCTL Low-level input voltage ONCTL Operating Current
Parameter Test Condition
1.141 1.192 1.242
Unit
Supply current
ONCTL
Switching Characteristics, Full Range
Parameter Test Condition Unit
delay time Under Voltage Protection delay time ONCTL delay time ONCTL de-bounce time Noise de-bounce time
tb1+1.1 tb1+2.3 tb1+4.4 32.7 73.5
Advanced Analog Technology, Inc.
January 2004
AAT1011A
Function Block Diagram
UVLO OV12 VINT =3.58 Power Reset Reset Level Shift Vref Reset Vref OV33 Debounce POD2
Vref OV12
UV33 OV33 Debounce Vref Vref UV33 Vref Reset Reset ONCTL Debounce POD2 Oscillator Debounce Delay Delay Level Shift
Delay
=1.28
Bandgap Reference
Advanced Analog Technology, Inc.
January 2004
AAT1011A
Timing Chart AAT1011
Reset
ONCTL delay
Protection Occur
ONCTL
ONCTL
Advanced Analog Technology, Inc.
January 2004
AAT1011A
Package Dimension (Unit: Mil)
R10Max (4X)
310Max.
7Typ.
115Min.
100Typ.
Typ.
182Typ.
Advanced Analog Technology, Inc.
January 2004
Min.
35020

3-CHANNEL POWER SUPPLY SUPERVISOR 3.3V, Features 3-Channel Power

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