LM5021-Q1

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM5021-Q1 AC-DC Current-Mode PWM Controller LM5021-Q1 SNVSA90 – DECEMBER 2014 1 Features 1 Qualified for Automotive Applications AEC-Q100 Qualified With the Following Results: – Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range – Device HBM Classification Level 2: ±2 kV – Device CDM Classification Level C4B: 750 V Ultra-low Startup Current (25 µA Maximum) Current Mode Control Skip Cycle Mode for Low Standby Power Single Resistor Programmable Oscillator Synchronizable Oscillator Adjustable Soft-Start Integrated 0.7-A Peak Gate Driver Direct Opto-Coupler Interface Maximum Duty Cycle Limiting (80% for LM5021-1 or 50% for LM5021-2) Slope Compensation (LM5021-1 Only) Undervoltage Lockout (UVLO) with Hysteresis Cycle-by-Cycle Overcurrent Protection Hiccup Mode for Continuous Overload Protection Leading Edge Blanking of Current Sense Signal Package: VSSOP-8 2 Applications DCM/CCM Flyback Converters Industrial Power Conversion SMPS for Smart Meters and Audio Amplifiers Building Automation and White Goods SMPS Isolated Telecom Power Supplies 3 Description The LM5021 off-line pulse width modulation (PWM) controller contains all of the features needed to implement highly efficient off-line single-ended flyback and forward power converters using currentmode control. The LM5021 features include an ultralow (25 µA) start-up cu...