General Description
The HT7A4016 is a controller IC that includes the necessary features to implement off-line or DC-DC current mode control schemes with a minimal external parts count. Internal circuits include a specially designed Mixed-Mode/Analog Interface for multifunction and multi-topology control schemes (DC-DC Buck/Boost, Off-line AC-DC), a trimmed oscillator for precise duty-cycle control under voltage lockout with a start-up current of less than 0.5mA, a wide temperature range, precise voltage reference, internal Slope Compensation and Leading-Edge Blanking. The HT7A4016 features basic system protection functions such as Cycle-by-Cycle Current Limiting and Under Voltage Lock-Out (UVLO).
A Multi-Function Pin can be used as a dimming function for LED driving, and as a primary feedback control for Primary-Side Feedback AC-DC applications.

Feature
• High Performance, Low Cost Current Mode PWM Controller especially designed for Energy Star 2.0
• Very Low Startup Current (<20μA) and Operating Current
• High-Voltage CMOS Process with Excellent ESD protection (>3KV)
• ±5% Trimmed Oscillator for Precise Frequency Control
• LEB (Leading-Edge Blanking) on CS Pin
• Internal Slope Compensation
• Programmable Switching Frequency
• Internally Trimmed Reference with UVLO (Under Voltage Lockout)
• Cycle-by-Cycle Current Limiting

Applications
• Switching AC-DC Adaptors
• DC-DC Switching Buck/Boost Converters
• LED Backlights for LCD/LED TVs

Package 8 SOP-A