器件名称: AQ1541
功能描述: Low Dropout 1 Amp Voltage Regulator with Enable Function
文件大小: 664.65KB 共10页
简 介:AQ1541
Low Dropout 1 Amp Voltage Regulator with Enable Function
Product Specification Revision 2.2 September 13, 2006
General Description
The AQ1541 is a low dropout three terminal voltage regulator, offered in popular fixed options or an adjustable version that can set a precise voltage from 1.22V to 12V with two external resistors. It drops into the footprint of the popular LM1117 SOT-223 and provides a true fourth pin separated from the output tab. The extra pin allows for an enable function that provides a remote turn-off for low power consumption. It draws virtually zero current in shutdown mode. The Enable pin implements Sequential, Ratiometric, or Simultaneous sequencing schemes. To assure accuracy within 1.5% over temperature the heart of the AQ1541 is a selfcorrecting AcuRef bandgap reference. On-chip current limit and thermal shutdown with hysteresis protects against any combination of overload and ambient temperature that might cause the junction temperature to exceed safe limits. The AQ1541 is featured in the new SOT223 4-lead TetraPackTM package.
Applications Graphic cards PC motherboards Switching power supply post-regulation Telecom equipment DVD video player Features Enable pin implements sequencing in
SOT223-3 footprint Vout tolerance 1.5% over temperature Eliminates expensive components Stable with low cost 1uF capacitor Low dropout voltage (1V at 1 Amp) Thermal protection with hysteresis Short circuit protection Offered with 1.8V, 2.5V, and……
