LM3489: LM3489 enable delay

Hi KF,

In many of these converters you would see the delay to avoid unintentional glitches before the output voltage rise up . If i may know , is there a particular reason /application where you want to reduce this delay ?

---Ambreesh

I don't see any way to reduce the delay from enable the start of switching on this device.

This device uses an external P-CH MOSFET. Many newer controllers and integrated regulators have been introduced since the release of the LM3489 product. I suggest you enter your design criteria into Webench and consider other devices that are constant frequency PWM or Constant On-time control loops. The LM3489 is an early hysteretic control loop. Much of the circuit operation is dependent on external component values and the designs are difficult to migrate from one design to the next. Because of the hysteretic control loop it is a challenge to test on the bench.