AX6639 Datasheet | AXElite

AX6639/A 3A High Output Current LDO Regulator  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 : 2.6V~5.5V - Adjustable Output (SOP-8L-EP and TO263-5L Only) and fixed Output voltage for 1.5V, 1.8V, 2.5V and 3.3V - Dropout voltage is 380m V at 3A output current - Guaranteed 3A output current - Low quiescent current is 200µA - yÑb€ (typ.) R ` - Fast transient response w VÛm shutdown protection om - Current limit and thermal c . h - Short circuit current fold-backotec of SOT-223, TO252, 2-pin TO263 and 5-Pin TO263 and g - Available in the 3-Pin TO220, . w wwpackages SOP-8L-EP Pb-Free 1/17 Axelite Confidential Materials, do not copy or distribute without written consent. Rev.1.5 Jul.27, 2010 AX6639/A  BLOCK DIAGRAM VIN Error Amp - + VOUT Current Limit EN Enable Bandgap Thermal Shutdown GND Fixed Version VIN Error Amp VOUT Current Limit VÛmw`R- yÑb€ - + Enable Bandgap Thermal Shutdown FB w.goftechm Adjustable...