Lzc8650c Ic Datasheet Pdf |link| -

: Features a thermal foldback function that reduces output current as temperature rises to prevent damage. Over-Voltage Protection (OVP) : Built-in protection for VDDcap V sub cap D cap D end-sub and output stages.

Integrated features protect the system against open-loop states, short circuits, and extreme thermal conditions. 2. LZC8650C Pin Configuration and Descriptions

Power supply pin for the IC controller. Delivers starting and operating current. DRV

[ VCC ] ----------------> ( Internal Bias & UVLO ) | [ MULT ] ---> ( Multiplier Block ) v | [ Control Logic ] ---> [ GATE Driver ] ---> Out [ CS ] ---> ( Over-Current ) ^ | | [ INV ] ---> ( Error Amp ) -------------+ ^ [ ZCD ] ---> ( Zero Crossing Demag ) Constant Current (CC) Control Mechanism lzc8650c ic datasheet pdf

Keeps output current within a tight tolerance percentage.

The LZC8650C is versatile, supporting several topologies:

Are you designing an or non-isolated (Buck) topology? : Features a thermal foldback function that reduces

Reliability is a major factor in commercial LED driver design. The LZC8650C integrates multiple layers of protection to safely handle unexpected circuit faults:

An internal thermal sensor tracks the silicon die temperature. If it crosses approximately 150∘C150 raised to the composed with power C

Samples the rectified AC line voltage to achieve a high power factor. DRV [ VCC ] ----------------> ( Internal Bias

So, what makes this chip so special? Let's dive into the LZC8650C datasheet to uncover its secrets.

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.

Do you require a or buck-boost (non-isolated) topology?

AC Input Lines (Universal 85V - 265V AC) │ │ [Bridge Rectifier] └───┬──────┘ │ [Flyback Transformer] ──────┐─────► [Positive LED Output] │ │ │ [Primary] [Aux Winding] [Secondary] │ │ │ [MOSFET] │ └─────► [Negative LED Output] ───┬─── │ (No Optocoupler Needed) │ ▼ [CS Pin] [ZCS Pin] (LZC8650C Controller IC Coordinates Switching) Use code with caution.