AQ105DY-M5-12-TR

AQ105 Secondary V/I amplifier SOT23-5 and SC70-5 Package Product Specification Revision 1.3 July 17, 2006 General Description The AQ105 is a low cost secondary control circuit for low power applications needing constant voltage and constant current control. It implements a simple single-loop control by modifying the internal reference level as a function of current above the current limit threshold. The current loop reduces the reference by 40 mV per mV change at the current sense input. The error amp provides high gain and bandwidth under low voltage operation. Applications • Offline Battery Chargers • Constant V/ Constant I supplies Features • 1.25V reference • 200mV current limit threshold • Error amp output swings near ground for • • • • • • • • low voltage operation High PSRR and line regulation Low current consumption Offered in ultra small SC70-5 package Open collector output Low voltage operation 2.2V 10mA current sink 50 ppm/ºC typical temperature deviation RoHS compliant available Block Diagram Pin Configuration www.acutechnology.com AQ105 Acutechnology Semiconductor Inc. AQ105 Typical Application Pin Descriptions Pin 1 2 3 4 5 Pin Name VCC GND COMP FB CS Function Positive supply Ground Output of error amplifier; 10 mA source/sink capability Inverting input to error amplifier; will have threshold of 1.25V. Current sense input Ordering Information Device AQ105 AQ105 AQ105 AQ105 Note: The Operating Tj -20C˚ ≤ 105C˚ -20C˚ ≤ 105C˚ -20C˚ ≤ 105C˚ -20C˚ ≤ 105C˚ %Tol 1.0 1.0 1.0 1.0 Pkg Type SOT-23-5 SOT-23-5 SC70-5 SC70-5 VOUT 1.25V 1.25V 1.25V 1.25V Wrap T&R T&R T&R T&R Ordering Number AQ105DY-M5-12-TR AQ105DY-M5-12-TRL AQ105DY-C5-12-TR AQ105DY-C5-12-TRL TRL parts are Lead Free and RoHS compliant. www.acutechnology.com 2 Rev. 1.3 July 17, 2006 Acutechnology Semiconductor Inc. AQ105 Absolute Maximum Ratings Parameter VCC Voltage COMP Voltage REF Voltage CS Voltage (Self limiting diodes) VCC, COMP, REF, CS Current Operating Junction Temperature Lead Temperature (soldering 10 seconds) Storage Temperature Range ESD Rating (HBM) Value 20 20 20 ±1 50 150 260 -65 to +150 2 Units V V V V mA ºC ºC ºC KV Electrical Specifications Electrical characteristics are guaranteed over the full temperature range –20ºC