Bypassing protection can lead to hardware damage and should only be done for troubleshooting purposes. resistor values to set a custom voltage threshold on the OVP pin? AP3064 Description Features Pin Assignments Applications
The IC fails permanently after a transient event.
| Pin | Function | Latching | Reset method | |------|----------|----------|---------------| | | External fault input | Yes (latch-off) | Cycle VCC or EN | | OVP | Over-voltage protection | Auto-recovery (typically) | Automatic when OV falls | | FB | LED current regulation | No | N/A | ap3064m-g1 protection pin
In the repair community (e.g., for LED TV backlight repair), technicians sometimes "bypass" or disable the protection logic to diagnose whether the fault lies in the driver IC itself or a failing LED strip. For the AP3064 series, this often involves manipulating the or grounding/pulling up the STATUS line, though this is only recommended for temporary testing to avoid permanent hardware damage.
The LED driver starts briefly, then shuts down immediately. Bypassing protection can lead to hardware damage and
LED drivers generate heat. If the LED junction temperature exceeds 125°C, lifetime degrades rapidly. Use an NTC thermistor divider to pull the protection pin low.
AP3064M-G1 (a 4-channel WLED driver), the primary protection-related pin is Pin 3 (OVP) | Pin | Function | Latching | Reset
This is not an auto-recovering protection. The latch-off ensures that a serious fault condition (e.g., output short, overtemperature from NTC) does not cause intermittent, damaging oscillations.
includes several other protection mechanisms distributed across its architecture: Under Voltage Lockout (UVLO): Monitored via the (Pin 9) and
The PROT pin cannot be driven high by an external logic gate without a current-limiting resistor because of the internal 50 µA pull-up. Use an open-drain configuration.