TCM1501B

The TCM1501B is designed as one kind of monolithic integrated circuit telephone tone ringer drivers that when coupled with an appropriate transducer replace the electromechanical bell. It uses BIDFET technology and is designed for use with either a Piezo transducer or an inexpensive transformer-coupled speaker to produce a pleasing tone composed of a high frequency alternating with a low frequency resulting in a warble frequency.

TCM1501B has many features. (1)Electronic replacement for electromechanical telephone bell when used with transducer. (2)Designed to meet or exceed FCC part 68 class B ringer requirements. (3)Low cost external component requirements. (3)Low external component count. (4)High standby input impedance 1Mohms typ. (5)Low ringer equivalency number which is typ less than 1. (6)Single ended high voltage output compatible with piezo transducer or transformer coupled speaker. (7)Reliable BIDFET process technology provides efficient high voltage operation. (8)On-chip high voltage full-wave diode bridge rectifier and output voltage regulator. (9)On-chip circuitry provides ring rejection of rotary dial transients, lightning, and induced high voltage transients. And so on.

Some absolute maximum ratings of TCM1501B have been concluded into several points as follow. (1)Its continuous peak-to-peak input voltage pin 1 to pin 8 would be 110V. (2)Its continuous DC input voltage at pin 6 would be 55V. (3)Its negative DC voltage any pin would be -1.2V. (4)Its continuous output current at pin 2 would be 12mA. (5)Its continuous output current pin 5 and pin 6 would be 30mA. (6)Its continuous SCR on-state input current pin 1 to pin 8 would be 200mA. (7)Its SCR on-state input current pin 1 to pin 8 would be 900mA. (8)Its continuous total dissipation at 25°C would be 1000mW. (9)Its operating free-air temperature range would be from -40°C to 85°C. (10)Its storage temperature range would be from -40°C to 125°C. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device. And so on. If you have any question or suggestion or want to know more information please contact us for details. Thank you!