is often cited as a functional equivalent with identical pinouts and electrical ratings. „Mouser Electronics“ Lietuva
This IC is specifically engineered for offline AC/DC flyback power converters used in demanding LED lighting fixtures such as industrial and outdoor luminaires.
The is a highly integrated, high-performance Primary-Side Regulation (PSR) and Power Factor Correction (PFC) controller IC designed specifically for offline isolated LED lighting applications . It eliminates the need for optocouplers and secondary-side feedback networks while delivering exceptionally accurate constant current control. Engineers looking to reduce overall system costs, shrink PCB footprints, and achieve high electrical efficiency frequently consult the LZC8650 PDF Datasheet for technical evaluation and reference designs. Core Functional Block Diagram & Architecture
: Monitors the CS pin continuously to safeguard the primary MOSFET from current spikes. lzc8650c ic datasheet pdf
The primary difference between the LZC8650B and the LZC8650C is that the 'C' variant features input over-voltage and under-voltage protection, whereas the 'B' variant has a lower slope compensation and can achieve performance below 10% of its rated range.
: Achieves high efficiency by eliminating secondary feedback components like opto-couplers. Protection Features
The LZC8650C utilizes an 8-pin footprint. Each pin serves a critical function in sampling feedback from the primary winding and controlling the power stage: Pin Number Description and Functional Role GND Ground reference pin for all internal controller circuits. 2 COMP is often cited as a functional equivalent with
Understanding the explicit operational limits found in the LZC8650 Technical Document prevents premature component failure and guarantees optimal performance under varying thermal loads. Typical 19.8 V (Min: 18.1 V, Max: 21.5 V) VDD Turn-Off Threshold ( VDDOFFcap V sub cap D cap D cap O cap F cap F end-sub ): Typical 8.0 V (Min: 7.0 V, Max: 9.0 V) Startup Current ( ISTcap I sub cap S cap T end-sub ): ≤is less than or equal to A (Measured at Operating Current ( IOCcap I sub cap O cap C end-sub ): 1.5 mA typical (with a 1.5 nF load on the DRV pin) VDD Overvoltage Protection ( VDDOVPcap V sub cap D cap D cap O cap V cap P end-sub ): 27 V typical Error Amplifier Reference Voltage ( VREFcap V sub cap R cap E cap F end-sub ): 253.0 mV ±plus or minus Gate Drive Clamping Voltage (
Zero-crossing detection; also used for over-voltage protection (OVP) . Power supply pin . DRV
When sourcing the official , electronic design engineers should prioritize verifiable semiconductor repositories and component distributor platforms. What to Look for in the PDF: It eliminates the need for optocouplers and secondary-side
The IC ensures that the input current follows the input voltage, creating a high power factor, essential for meeting international regulations (e.g., Energy Star, CE). 5. Typical Application Circuits Go to product viewer dialog for this item.
. Must be routed carefully to reduce electrical switching noise. 5 DRV
Totem-pole gate drive output for an external power MOSFET. Internally clamped at 16V to safe-guard the gate. VDD Supply power pin for the controller's internal circuitry. 7 OTP