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PDF AS2333D Data sheet ( Hoja de datos )
| Número de pieza | AS2333D | |
| Descripción | (AS23xx) Secondary Side Housekeeping Circuit | |
| Fabricantes | ETC | |
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AS23xx
Secondary Side Housekeeping Circuit
Features
Description
• Standard PC Power Good:
UV Detection on 4 rails
UV Detection of AC/Bulk supply
OV Detection on 4 rails
Open collector PG out
• Pogrammable Fault output:
OV
OV plus UV
OV plus UV after startup delay
• OV Crow Bar Driver
• Digital ON/OFF input
• 2.5V Voltage Reference
• Operates from 5V or 12V rail
The AS23xx is a housekeeping circuit for monitoring the outputs of power
supplies. It directly senses all the output rails without the need for external dividers
and detects undervoltage and overvoltage. It also provides an additional
undervoltage comparator which may be configured with any arbitrary hysteresis
to sense a divided down representation of the AC bulk voltage. The housekeeping
section provides all the features necessary to allow external caps to set the
common timing features of PC type power supplies. In addition, negative rails may
be sensed without the necessity of a VEE connection, and negative sensing may
be disabled without affecting operation of the positive sense section. The 2.5 V
series reference is available and can source up to 5 mA. This IC is available in
16 lead packages. Outputs include a POK (Power OK) and a fault signal.
The AS2333 includes sensing for ±12 V, 5 V, and 3.3V. The AS2350 exchanges
a -5 V sense capability for the 3.3 V input. The AS2316 monitors all supply
voltages, but lacks CBD (Crow-Bar Driver).
Pin Configuration — Top view
VCC 1
+12V 2
+5V 3
+3.3V 4
-5V 5
-12V 6
GND 7
HYST 8
16 FAULT
15 VREF
14 UVB
13 DELAY
12 POK
11 PGCAP
10 AC
9 OFF
VCC 1
+12V 2
+5V 3
-5V 4
-12V 5
GND 6
HYST 7
OFF 8
16 CBD
15 FAULT
14 VREF
13 UVB
12 DELAY
11 POK
10 PGCAP
9 AC
VCC 1
+12V 2
+5V 3
+3.3V 4
-12V 5
GND 6
HYST 7
OFF 8
16 CBD
15 FAULT
14 VREF
13 UVB
12 DELAY
11 POK
10 PGCAP
9 AC
AS2316 SOIC VCC 1
+12V 2
+5V 3
+3.3V 4
-5V 5
-12V 6
GND 7
HYST 8
16 FAULT
15 VREF
14 UVB
13 DELAY
12 POK
11 PGCAP
10 AC
9 OFF
AS2333 SOIC
VCC 1
+12V 2
+5V 3
+3.3V 4
-12V 5
GND 6
HYST 7
OFF 8
16 CBD
15 FAULT
14 VREF
13 UVB
12 DELAY
11 POK
10 PGCAP
9 AC
AS2350 SOIC VCC 1
+12V 2
+5V 3
-5V 4
-12V 5
GND 6
HYST 7
OFF 8
16 CBD
15 FAULT
14 VREF
13 UVB
12 DELAY
11 POK
10 PGCAP
9 AC
AS2316 PDIP
AS2333 PDIP
AS2350 PDIP
Ordering Information
Package
16-Pin Plastic SOIC
16-Pin Plastic SOIC
16-Pin Plastic SOIC
16-Pin Plastic DIP
16-Pin Plastic DIP
16-Pin Plastic DIP
Temperature Range
0 to 105° C
0 to 105° C
0 to 105° C
0 to 105° C
0 to 105° C
0 to 105° C
Order Code
AS2316D
AS2333D
AS2350D
AS2316N
AS2333N
AS2350N
© ASTEC Semiconductor
91
1 page  
Secondary Side Housekeeping Circuit
AS23xx
Absolute Maximum Ratings
Parameter
Symbol
Rating
Unit
Supply Voltage
VCC 20 V
Continuous Power Dissipation at 25° C
Junction Temperature
PD
1000
mW
TJ 150 °C
Storage Temperature Range
TSTG
– 65 to 150
°C
Lead Temperature, Soldering 10 Seconds
TL 300 °C
Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or any other conditions above indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
Recommended Conditions
Parameter
Supply Voltage
Symbol
VCC
Rating
5 - 12
Unit
V
Typical Thermal Resistance
Package
16L SOIC
16L PDIP
θJA
65° C/W
80° C/W
θJC Typical Derating
45° C/W 10.0 mW/°C
35° C/W 12.5 mW/°C
Electrical Characteristics
Electrical Characteristics are guaranteed over full junction temperature range (0 to 105° C). Ambient temperature must be derated
based on power dissipation and package thermal characteristics. Unless otherwise specified, the conditions of test are VCC = 12 V;
+3.3 V = 3.3 V; +5 V = 5V; +12 V = 12 V; –12 V = –12 V; – 5 V = – 5 V; OFF = low.
Parameter
Symbol
Bias
Supply Current
ICC
Min. VCC for operation
VCC Min.
Undervoltage, Overvoltage
+3.3 V (Not available on AS2350)
+3.3 V Undervoltage
UV
+3.3 V Overvoltage
OV
+3.3 V Input Current
+5 V
IB
+5 V Undervoltage
UV
+5 V Overvoltage
OV
+5 V Input Current
+12 V
IB
+12 V Undervoltage
UV
+12 V Overvoltage
OV
+12 V Input Current
IB
Test Condition
no faults
VREF = 2.5 V, no faults
V+3.3 =+3.3V, V+5 =+5.0V
V+5 =+5.0V, V+3.3 =+3.3V
V+12 =+12.0V
Min Typ Max Unit
8 12 mA
4.2 V
2.87 2.95 3.03 V
3.76 3.86 3.96 V
-0.1 0 0.1 mA
4.40 4.50 4.60 V
5.74 5.89 6.04 V
1.6 2.5 mA
10.25
14.53
10.50
14.90
0.8
10.60
15.27
1.5
V
V
mA
ASTEC Semiconductor
95
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AS2333D.PDF ] | |
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