Lzc8650c Ic Datasheet Pdf Review

Stresses exceeding these ratings may cause permanent damage to the device.

| Parameter | Symbol | Value | Unit | | :--- | :--- | :--- | :--- | | VCC Supply Voltage | VCC | 30 | V | | Input Voltage (HV Pin) | V_HV | 600 | V | | Output Driver Voltage | V_OUT | 30 | V | | Operating Temperature | T_opr | -40 to +105 | °C | | Junction Temperature | T_j | +150 | °C |

(Note: Typical operating VCC range is roughly 10V to 25V. The device usually includes an internal Under-Voltage Lockout (UVLO) around 12V-14V).

The datasheet highlights a low quiescent current (operating current when the IC is active but the load is low). Low quiescent current is vital for meeting global energy standards such as Energy Star or the EU Ecodesign Directive, ensuring minimal power waste when the light is active but dimmed or in standby.

The LZC8650C utilizes a high-voltage startup circuit connected to the rectified AC line (via the HV pin). This charges the VCC capacitor rapidly. Once the VCC voltage reaches the UVLO threshold, the internal logic activates. After startup, the IC is typically self-powered via an auxiliary winding from the transformer.

As specific IC datasheets can be proprietary to manufacturers (often based in China, such as Lii Semiconductor or similar fabs), the PDF is typically found via:

Disclaimer: This write-up is a generalized technical summary based on the typical behavior of ICs in the LZC86xx series and standard LED driver topologies. For precise circuit design, warranty validation, and safety compliance, the official specific manufacturer datasheet must be consulted. lzc8650c ic datasheet pdf

The LZC8650C (often appearing in documentation as the LZC8650) is a Primary Side Regulation (PSR) and Power Factor Correction (PFC) LED Driver Controller. It is designed for isolated flyback or non-isolated Buck-Boost topologies, providing high current accuracy without the need for secondary feedback components like optocouplers. Key Technical Specifications Feature Control Mode Quasi-Resonance (QR) mode with Flyback or Buck-Boost PFC Type Single-stage Power Factor Correction (PFC) Current Control

Real-current control for accurate output from the primary side Packaging Commonly available in SOT23-6 or SOIC-8 packages Protection Features

OTP (Over Temperature), VDD OVP, Output Short/Open protection Operational Ratings

Based on equivalent series controllers like the DIO8650C, the typical electrical limits include: Supply Voltage ( VINcap V sub cap I cap N end-sub ): Typically 9.5V9.5 cap V to 27V27 cap V (Absolute maximum up to 33V33 cap V ). Operating Temperature: to ambient. Power Dissipation: Approximately 0.6W0.6 cap W for SOT23-6 and 1.1W1.1 cap W for SOIC-8 at . Core Functionalities

Primary Side Regulation: Eliminates secondary feedback circuits, reducing total component count and cost.

Four-Stage Temperature Foldback: Allows flexible setting of current compensation via a single external resistor based on operating temperature. Stresses exceeding these ratings may cause permanent damage

Anti-Interference: Built-in Leading Edge Blanking (LEB) on CS/FB pins removes the need for external filtering.

Safety: Includes cycle-by-cycle current limiting and hysteresis-based thermal protection.

For detailed engineering, you can access the full technical documentation through Lozen Technology PDF Source or the Prism Electronics Product Page.

Q1: Is the LZC8650C compatible with the more common PT4115 or AL8860? A: In many cases, the pinout and functionality are similar. However, the feedback voltage (Vref) may differ (e.g., 0.1V vs. 0.2V), which changes Rsense values. Always consult the LZC8650C IC datasheet PDF for exact values.

Q2: Can I use this IC to charge a battery? A: No. The LZC8650C is designed for constant current output to LEDs. It is not a battery charger IC (which requires constant current/constant voltage switching). The datasheet will not include a charging algorithm.

Q3: Where can I download the datasheet without registration? A: Try the “Datasheet (PDF)” link on LCSC’s product page or UTSOURCE. Many Asian distributors provide free, immediate downloads. Disclaimer: This write-up is a generalized technical summary

Q4: What is the difference between LZC8650C and LZC8650B? A: The “C” revision typically has improved thermal performance or higher switching frequency. Only the latest datasheet revision will document these differences.

Given the importance of authenticity, here is a step-by-step strategy to locate the correct LZC8650C IC datasheet PDF:

The datasheet provides tested schematics for:

  • Use datasheet aggregators:

  • Check for equivalent ICs – If this is a power management IC (e.g., LED driver, DC-DC converter), common similar parts are PT4115, LZC8650, or SY8710.

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