: Place a low-ESR ceramic capacitor near Pin 6 ( VDDcap V sub cap D cap D end-sub
| Parameter | Typical Value | Significance | |-----------|--------------|---------------| | Input Voltage | 4.5V – 40V | Determines battery or bus compatibility | | Output Current (max) | 1.5A (continuous), 2.5A (peak) | Defines LED load capability | | Switching Frequency | 500kHz ±15% | Impacts inductor and capacitor size | | Feedback Voltage | 0.1V or 0.2V | Low feedback reduces sense resistor loss | | DIM Pin Logic | 0.3V to 5V PWM | Allows microcontroller dimming | | Efficiency | Up to 95% | Reduces heat and extends battery life | | Thermal Shutdown | 150°C (typical) | Protects IC during overload |
Cycle-by-cycle current limiting on the CS pin and protection against output short circuits or open LED conditions. „Mouser Electronics“ Lietuva Documentation Links Full Datasheet (PDF): You can access the detailed LZC8650 Preliminary Datasheet via TaoIC. Alternative Source: A similar part, the DIO8650C Datasheet
Monitors incoming rectified mains line voltage deviations to shut down operations safely under intense line surges. Architectural Circuit Features Primary-Side Regulation (PSR) lzc8650c ic datasheet pdf
operates as a primary-side controller, meaning it does not require an opto-coupler for feedback, which simplifies design and reduces cost.
The AC mains supply passes through a fuse, an NTC thermistor (for inrush current limitation), an inductor-capacitor (LC) EMI filter network, and a full-bridge rectifier.
"DIO8650C datasheet" (as they are closely related functional equivalents) : Place a low-ESR ceramic capacitor near Pin
High-power isolated LED drivers, typically used in LED bulbs and tube lighting.
Over-Temperature Protection (OTP) activates when the junction temperature exceeds 150° C. OVP: Over Voltage Protection on VDD pin if VDD > 27V.
, the IC ceases switching execution, allowing the system to cool down and prevent catastrophic catastrophic damage. 7. PCB Layout Design Considerations primary inductor winding
Enables high power factor > 0.9 and low THD.
Reliability is paramount in power electronics, and the LZC8650C features a comprehensive suite of protections to ensure safe operation:
The high di/dt loop composed of the bulk capacitor, primary inductor winding, power MOSFET, and CS resistor must be laid out as compactly as possible to minimize stray inductance and radiated noise.
Real-current control for accurate output from the primary side Commonly available in SOT23-6 or SOIC-8 packages Protection Features
is a high-performance, single-stage primary-side offline LED driver controller manufactured by Lozen Technology (often labeled with the "LZ" brand). It integrates active Power Factor Correction (PFC) and operates in Quasi-Resonant (QR)