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UC2843BG-S08-T Folha de dados(PDF) 2 Page - Unisonic Technologies |
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UC2843BG-S08-T Folha de dados(HTML) 2 Page - Unisonic Technologies |
2 / 8 page UC2843B LINEAR INTEGRATED CIRCUIT UNISONICTECHNOLOGIESCO.,LTD 2 of 8 www.unisonic.com.tw QW-R103-048.D PIN CONFIGURATION VREF 8 7 6 5 1 2 3 4 RT/CT COMP VFB ISENSE VCC OUTPUT GND PIN DESCRIPTION PIN NO. PIN NAME DESCRIPTION 1 COMP This pin is the Error Amplifier output and is made available for loop compensation. 2 VFB This is the inverting input of the Error Amplifier. It is normally connected to the switching power supply output through a resistor divider. 3 ISENSE A voltage proportional to inductor current is connected to this input. The PWM uses this information to terminate the output switch conduction. 4 RT/CT The Oscillator frequency and maximum Output duty cycle are programmed by connecting resistor RT to VREF and capacitor CT to ground. Operation to 500 kHz is possible. 5 GND This pin is the combined control circuitry and power ground. 6 OUTPUT This output directly drives the gate of a power MOSFET. Peak currents up to 1.0A are sourced and sunk by this pin. 7 VCC This pin is the positive supply of the control IC. 8 VREF This is the reference output. It provides charging current for capacitor CT through resistor RT. BLOCK DIAGRAM |
Nº de peça semelhante - UC2843BG-S08-T |
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Descrição semelhante - UC2843BG-S08-T |
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