Advanced Analog Technology, Inc.
Advanced Analog Technology, Inc
.
Page 1 of 11 V 1.0
AAT1014
Details are subject to change without notice
3-CHANNEL PC POWER SUPPLY SUPERVISOR
FEATURES
3-Channel PC Power Supply Supervisor
Over Voltage Protection for 3.3V, 5V, and
12V
Under Voltage Protection for 3.3V, 5V
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
38 ms ONCTL Signal De-bounce
73
s Noise De-bounce Time
Latch Function Controlled by ONCTL and
Protection Input.
PIN CONFIGURATION
FPO
ONCTL
CC
V
GENERAL DESCRIPTION
The AAT1014 is a 3-channel PC power supply
supervisor. 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.
Over voltage fault protection and under voltage
fault protection can be directly triggered without
any external voltage divider. AAT1014 could also
greatly reduce the printed circuit board space for
PC power supply system. Furthermore, remote
function from external signal, i.e., On/Off Control
( ONCTL ), is also implemented.
The versatile AAT1014 comes in a compact
PDIP-8 package with optimized external parts to
offer its users simple and effective solutions.
Advanced Analog Technology, Inc.
Advanced Analog Technology, Inc
.
Page 2 of 11 V 1.0
AAT1014
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 latches high and combines 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 (Over Voltage Protection
and Under Voltage Protection)
OVP monitors 3.3V, 5V, and 12V via
CC
V pin,
while UVP monitors 3.3V and 5V. OVP and
UVP levels are determined by internal voltage
dividers. The typical values are 3.9V, 6.1V,
13.4V for OVP and 2.69V, 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 38 ms de-bounce time.
AAT1014 offers 2.3 ms delay time after de-bounce
to trigger FPO when ONCTL switches from
low to high.
Advanced Analog Technology, Inc.
Advanced Analog Technology, Inc
.
Page 3 of 11 V 1.0
AAT1014
PIN DESCRIPTION
PIN NO NAME I/O
DESCRIPTION
1
PGI
I Power Good Input
2 GND
Ground
3
FPO
O Inverted Fault Protection Output, Open Drain Output Stage
4
ONCTL I ON/OFF Control
5
33
V
I Over and Under Voltage Protection for 3.3V
6
5
V
I Over and Under Voltage Protection for 5V
7
CC
V
I Supply Voltage and 12V Over Voltage Protection Input
8
PGO
O Power Good Output, Open Drain Output Stage
ABSOLUTE MAXIMUM RATINGS
CHARACTERISTICS SYMBOL
VALUE
UNIT
Supply Voltage
CC
V
16 V
FPO Output Voltage
FPO
V
16 V
PGO Output Voltage
PGO
V
8 V
Supply Current
CC
I
1 mA
Operating Free-Air Temperature Range
C
T
20
-
to +85
o
C
Storage Temperature Range
storage
T
45
-
to +125
o
C
RECOMMENDED OPERATING CONDITIONS
TEST
CONDITION
MIN TYP MAX UNIT
Supply Voltage,
CC
V
4
15
V
Input Voltage,
I
V
ONCTL ,
5
V ,
33
V , PGI
7
V
FPO
V
15
V
Output Voltage
PGO
V
7
V
FPO
I
30
mA
Output Sink Current, I
O
(sink)
PGO
I
10
mA
Supply Voltage Rising Time
r
t
See Note 1
1
ms
Note 1:
CC
V slew rate must be less than 14 V/ms.
Advanced Analog Technology, Inc.
Advanced Analog Technology, Inc
.
Page 4 of 11 V 1.0
AAT1014
ELECTRICAL CHARACTERISTICS, V
CC
= 5 V (Unless Otherwise Specified)
OVP AND UVP
PARAMETER TEST
CONDITION MIN
TYP
MAX
UNIT
33
V
3.7 3.9 4.1
5
V
5.7 6.1 6.5
Over Voltage Threshold
CC
V
12.8 13.4 13.9
V
33
V
2.55 2.69 2.83
5
V
4.10 4.30 4.47
Under Voltage Threshold
CC
V
3.8
V
PGO AND FPO
PARAMETER TEST
CONDITION
MIN
TYP
MAX
UNIT
LEAK
I
Leakage Current (PGO)
PGO = 5 V
5
A
OL
V Low Level Output Voltage
(PGO)
k
sin
I
= 10 mA
0.4
V
LEAK
I
Leakage Current ( FPO ) V( FPO ) = 5 V
5
A
k
sin
I
= 10 mA
0.3
OL
V
Low Level Output Voltage
( FPO )
k
sin
I
= 30 mA
0.7
V
PGI AND ONCTL
PARAMETER TEST
CONDITION
MIN
TYP
MAX
UNIT
Input Threshold Voltage (PGI)
1.16
1.20 1.24
V
Input Pull-Up Current ( ONCTL )
ONCTL = 0 V
150 A
High-Level Input Voltage ( ONCTL )
2.4 V
Low-Level Input Voltage ( ONCTL )
1.2
V
OPERATING CURRENT
PARAMETER TEST
CONDITION
MIN
TYP
MAX
UNIT
CC
I Supply Current
ONCTL = 5 V
1
mA
Advanced Analog Technology, Inc.
Advanced Analog Technology, Inc
.
Page 5 of 11 V 1.0
AAT1014
ELECTRICAL CHARACTERISTICS, V
CC
= 5 V (Unless Otherwise Specified)
(CONT.)
SWITCHING CHARACTERISTICS, V
CC
= 5V, T
op
= FULL RANGE
PARAMETER TEST
CONDITION
MIN
TYP
MAX
UNI
T
1
d
t PGO Delay Time
200 300 490 ms
2
d
t UVP Delay Time
65 75 122
ms
3
d
t ONCTL off to FPO Delay
Time
1
.
1
t
1
b
+
3
.
2
t
1
b
+
4
.
4
t
1
b
+
ms
1
b
t ONCTL De-Bounce Time
32 38 61
ms
2
b
t Noise De-Bounce Time
47 73 110
s
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