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TS1451CS Folha de dados(PDF) 1 Page - Taiwan Semiconductor Company, Ltd |
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TS1451CS Folha de dados(HTML) 1 Page - Taiwan Semiconductor Company, Ltd |
1 / 7 page TS1451 1-7 2003/12 rev. A TS1451 Dual Channel PWM Controller Supply Voltage Range 3.6 V to 40V Output Driving Current 20mA Oscillator Frequency up to 500KHz General Description The TS1451 integrates dual channel PWM control circuit into a single chip, mainly designs for power supply regulator. All the functions included an on-chip 2.5V reference output, two error amplifiers, and adjustable oscillator, two dead-time comparators, under voltage lock out, short circuit protection, and dual common-emitter output transistor circuit. Recommend the output CE transistors as pre-driver for driving extremely. the dead time control can provide from 0% to 100%. Switching frequency can be adjustable by trimming RT and CT. During low Vcc situation, the under voltage lock out makes sure that the output are off until the internal circuit is operational normally. The TS1451 is offered in SOP-16 and DIP-16 package. Features Dual PWM Power Control Circuitry Operating Voltage Can be up to 50V Adjustable Dead Time Control (DTC) Under Voltage Lock Out protection (UVLO) Short Circuit Protection (SCP) Variable Oscillator Frequency up to 500KHz 2.5V Voltage Reference Output Pin Assignments Applications Backlight Inverter DC to DC Converters in Computers Ordering Information Part No. Operating Temp. Package TS1451CD DIP-16 TS1451CS 0 ~ +70 oC SOP-16 Pin Descriptions Name Descriptions CT Timing Capacitor RT Timing Resistor EA+ Error Amplifier Input (+) EA- Error Amplifier Input (-) FB Feedback Loop Compensation DTC Dead Time Control Out Pre-Driver Output Gnd Ground Vcc Supply Voltage SCP Short Circuit Protection Ref Voltage Reference SOP-16 DIP-16 |
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