? GENERAL DESCRIPTION

The AX6639/A is a low noise, high output current, low quiescent current and low dropout linear regulator. The Device includes pass element, error amplifier, band-gap, current-limit and thermal shutdown circuitry. The output current is up to 3A. The characteristics of low dropout voltage and less quiescent current make it good for some critical current application, for example, some battery powered devices. The typical quiescent current is approximately 200μA. There are 1.5V, 1.8V, 2.5V, 3.3V fixed output voltage and adjustable output versions (SOP-8L-EP and TO263-5L Only). Built-in current-limit, Short current protection and thermal-shutdown functions prevent any fault condition from IC damage.

? FEATURES

- Input voltage range 2.6 V~ 5.5 V

- Adjustable Output (SOP 8L EP and TO263 5L Only) and f ixed Output voltage for 1.5V, 1.8V, 2.5V and 3.3V

- Dropout voltage is 3 8 0mV at 3 A output current

- Guaranteed 3A output current

- Low quiescent current is 200μA (typ.)

- Fast transient response

- Current limit and thermal shutdown protection

- Short circuit current fold-back

- Available in the SOT-223 TO252, 2-pin TO263 and 5-Pin TO263 and SOP-8L-EP Pb-Free packages

- RoHS and Halogen free compliance.