UPC1237 - PPROTECTOR IC FOR STEREO POWER AMPLIFIER

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Hoàng Nhân Pro
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UPC1237.jpg

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.
UPC1237-pin.png


PIN NO. PIN NAME DESCRIPTION
1 PIN1 Input pin of overload detector
2 PIN2 Input pin of output offset detector
3 PIN3 Input pin of switch for latch/automatic-reset
4 PIN4 Input pin of AC-OFF detector
5 PIN5 GND
6 PIN6 Output pin of relay driver
7 PIN7 Input pin of VCC ON mute, setting delay time
8 PIN8 VCC

BLOCK DIAGRAM
BLOCK DIAGRAM upc1237.png


UPC1237-ABSOLUTE MAXIMUM RATING.png


TYPICAL APPLICATION CIRCUIT
TYPICAL APPLICATION CIRCUIT upc1237.png


uPC1237 Current sense circuit protection for amplifier
uPC1237_current_sense_circuit_protection.png
 
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