CD5020 Datasheet | CYT

Features - Internal High Voltage Start-Up Bias Regulator - Error Amplifier - High Precision Voltage Reference - Programmable Soft-Start - 1A Peak Gate Drive - Maximum Duty Cycle Limiting - 80% - Programmable Line Under Voltage Lockout (UVLO) with Adjustable Hysteresis - Cycle-by-Cycle Over-Current Protection - Slope pensation - Programmable Oscillator Frequency with Synchronization Capability - Current Sense Leading Edge Blanking - Thermal Shutdown Protection - Packages: VSSOP10 Applications - DC- DC Power Supplies Description The CD5020 high voltage pulse-width-modulation (PWM) controller contains all of the features needed to implement single ended primary power converter topologies. Output voltage regulation is based on current-mode control, which eases the design of loop pensation. The CD5020 includes a high-voltage start-up regulator that operates over a wide input range up to 100V. The PWM controller is designed for high speed capability including an oscillator frequency range to 1MHz and total propagation delays less than 100ns. Additional features include an error amplifier, precision reference, line under-voltage lockout, cycle-by-cycle current limit, slope pensation, soft-start, oscillator synchronization capability and thermal shutdown. Typical Application Circuit WEB：.cyt..cn TEL：0755-86169567 A0 -1- Pin Diagram (Top View) Absolute Maximum Ratings VIN to GND VCC to GND RT to GND All other PIN to GND Remended Operating Conditions VIN voltage External voltage applied to VCC Operating junction temperature -0.3V ~ 100V -0.3V ~ 16V -0.3V ~ 5.5V -0.3V ~ 7V 13V ~ 90V 8V ~ 15V -40℃ ~ +125℃ WEB：.cyt..cn TEL：0755-86169567 A0 -2- Electrical Characteristics Symbol Parameter Condition Startup Regulator VCCReg VCC...