Datasheet

UNISONIC TECHNOLOGIES CO., LTD
UPC1237
Preliminary
LINEAR INTEGRATED CIRCUIT
PROTECTOR IC FOR STEREO
POWER AMPLIFIER
„
DESCRIPTION
UTC UPC1237 is a semiconductor integrated circuit designed
for protecting stereo power amplifiers and loudspeakers.
„
FEATURES
* Wide supply voltage range of 25V~60V.
* Contain a relay driver. (Max. I6=80mA)
* Work as either latching function or automatic resetting function
by using pin 3. (In both overload detection and output offset
detection, either function can be selected.)
* Single power supply.
* Built-in output offset detection function. Both positive and
negative output offset can be detected through pin2.
* AC voltage can be detected.
* Time delay function. The time delay form amplifier power ON to
relay ON can be freely set by selecting external components.
* The moment that amplifier-power is turned off, it can make relay
broken OFF and then loudspeaker disconnected for amplifier to
prevent a shock off noise.
„
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UPC1237L-G08-T
UPC1237G-G08-T
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co., Ltd
Package
Packing
SIP-8
Tube
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UPC1237
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1
„
LINEAR INTEGRATED CIRCUIT
PIN CONFIGURATION
2 3 4 5 6 7
8
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
„
Preliminary
PIN NAME
PIN1
PIN2
PIN3
PIN4
PIN5
PIN6
PIN7
PIN8
DESCRIPTION
Input pin of overload detector
Input pin of output offset detector
Input pin of switch for latch/automatic-reset
Input pin of AC-OFF detector
GND
Output pin of relay driver
Input pin of VCC ON mute, setting delay time
VCC
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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UPC1237
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Preliminary
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING (TA=25°C)
PARAMETER
SYMBOL
RATINGS
UNIT
Power Supply Voltage
VCC
60
V
Pin 4 Maximum Voltage
V4(MAX)
10
V
Pin 7 Maximum Voltage
V7(MAX)
8
V
Pin 8 Maximum Voltage
V8(MAX)
8
V
Pin 1 Maximum Current
I1(MAX)
3
mA
Pin 2 Maximum Current
I2(MAX)
±3
mA
Pin 6 Maximum Current
I6(MAX)
80
mA
Power Dissipation (TA=75°C)
PD
320
mW
Operational Temperature
TOPR
-20 ~ +75
°C
Storage Temperature
TSTG
-40 ~ +125
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
„
RECOMMENDED OPERATING CONDITION
PARAMETER
Supply Voltage
„
SYMBOL
VCC
RATINGS
25 ~ 60
UNIT
V
ELECTRICAL CHARACTERISTICS (VCC=45V, TA=25°C, Using latching function)
PARAMETER
Pin 1 Threshold Voltage
Pin 2 Positive Threshold Voltage
Pin 2 Negative Threshold Voltage
Pin 4 Threshold Voltage
Pin 8 Reference Voltage
SYMBOL
VTH 1
VTH +2
VTH -2
VTH 4
V8
TEST CONDITIONS
Level to invert at Pin 6
Level to invert at Pin 6
Level to invert at Pin 6
Level to invert at Pin 6
RL=1.5kΩ
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
0.58
0.54
-0.12
0.60
3.0
TYP
0.67
0.62
-0.17
0.74
3.4
MAX
0.76
0.70
-0.23
0.90
3.8
UNIT
V
V
V
V
V
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UPC1237
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LINEAR INTEGRATED CIRCUIT
TEST CIRCUIT
Switch positions
Item
VTH 1
VTH +2
VTH -2
VTH 4
V8
„
Preliminary
SW 1
1
2
2
2
2
SW 2
3
1
2
3
3
SW3
2
2
2
1
2
TYPICAL APPLICATION CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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UPC1237
Preliminary
LINEAR INTEGRATED CIRCUIT
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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