AQ102 Low-Voltage Ref/Amplifier SOT23-5 and SC70-5 Package Product Specification Revision 1.3 General Description The AQ102 is a low voltage combined reference/amplifier suited for the control loop of low voltage power supplies. In order to allow operation down to very low voltages, the error amplifier output and the supply terminal have been isolated to separate functional pins. The nominal reference voltage is 600 mV, the COMP output can sink 20mA at 300mV. Functionally, the AQ120 can be applied similarly to industry standard TL431, except that the reference is 600 mV and this requires a separate Vcc connection to a supply above 2.2V. Additionally, the output of the AQ120 can swing close to ground. In the SC-70 package, the AQ102 is a replacement for the MAX8515 part. Block Diagram www.acutechnology.com May 3, 2005 Applications • Power supply control loop • Power supply supervisory functions Features • Low input voltage reference • 600mV high accuracy voltage reference • Low TC voltage reference • High PSRR and line regulation • Low current consumption • Offered in ultra small SC70-5 package • Zero offset error amplifier • Open collector output • RoHS compliant Pin Configuration AQ102 AQ102 Acutechnology Semiconductor Inc. Typical Application Pin Descriptions Pin Pin Name Function 1 FB 2 GND 3 COMP 4 N/C - 5 VCC Positive supply Inverting input to error amplifier; will have threshold of 600mV. Ground Output of error amplifier; 20 mA source/sink capability Ordering Information Device Operating Tj %Tol AQ102 -40C˚ ≤ 105C˚ 1.0 AQ102 -40C˚ ≤ 105C˚ 1.0 Note: The VOUT Wrap Ordering Number SOT-23-5 0.6V T&R AQ102BY-M5-06-TRL SC70-5 0.6V T&R AQ102BY-C5-06-TRL Pkg Type TRL parts are Lead Free and RoHS compliant. www.acutechnology.com 2 Rev. 1.3 May 3, 2005 AQ102 Acutechnology Semiconductor Inc. Absolute Maximum Ratings Parameter Value Units VCC Voltage 20 V COMP Voltage 20 V REF Voltage 20 V VCC, COMP, REF Current 50 mA Operating Junction Temperature 150 ºC Lead Temperature (soldering 10 seconds) 260 ºC -65 to +150 ºC Storage Temperature Range Electrical Specifications Electrical characteristics are guaranteed over the full temperature range –40ºC <Tj<105ºC. Ambient temperature must be de-rated based upon power dissipation and package thermal characteristics. Unless otherwise stated, test conditions are VCC = 3V, VCOMP = VFB, ICOMP = 1mA Symbol Parameter Vccmin Minimum Input Voltage Conditions Icc Quiescent Supply Current Vcc Supply Voltage Vref Reference Voltage DVcc Line regulation 2.2V < VCC < 18V Load Regulation Reference Temperature Deviation DViload Tcref IFB PSRR Min VCOMP=1V Typ 0.3 2.2 Tj=25ºC 594 -40ºC <Tj<105ºC 592 600 Max Units 2.2 V 0.5 mA 18 V 606 608 mV 0.5 1 mV ICOMP=1mA to 10mA 4 8 mV -40ºC <Tj<105ºC 25 50 ppm/ºC 500 nA REF input current -500 Reference Power Supply Rejection Freq.=300KHz 35 45 dB Av Error Amplifier Open Loop Gain ICOMP=2mA, COMP=1V 60 80 dB BW Unity Gain Frequency ICOMP=2mA, COMP=1V 1 2 MHz VCOMP Output Saturation Voltage ICOMP=20mA, VFB= 700mV 100 TRANSC Output Transconductance ICOMP=1mA to 20mA 2.5 Output Leakage Current VCOMP=16 VFB=0 200 Ileak www.acutechnology.com 3 Rev. 1.3 250 mV mA/mV 400 nA May 3, 2005 AQ102 Acutechnology Semiconductor Inc. Typical Performance Characteristics Load regulation Line regulation (at 1mA) 6 Output voltage change (mV) Output voltage change (mV) 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 2.2 6 10 14 5 4 3 2 1 0 18 1 5 Supply voltage (V) 15 20 Load current (mA) Supply current vs load current Power-supply rejection ratio vs frequency 300 -50 280 -55 260 -60 240 -65 PSRR (dB) Supply current (uA) 10 220 200 180 -70 -75 -80 -85 160 -90 140 -95 120 -100 100 0 5 10 15 0.1 20 Load current (m A) www.acutechnology.com 1 10 100 1000 10000 100000 Frequency (Hz) 4 Rev. 1.3 May 3, 2005 AQ102 Acutechnology Semiconductor Inc. Typical Performance Characteristics (contd.) Vref@10mA FB Bias current vs Tem perature Vcc=2.5V 630 0 620 Reference voltage (V) FB bias current (nA) -10 -20 -30 -40 -50 610 600 590 580 -60 -70 -40 0 40 80 570 120 -40 Tem perature (degrees C) 0 40 80 120 Temperature (degrees C) Gain vs. Frequency 110 90 Gain (dB) 70 50 30 10 -10 0.01 0.1 1 10 100 1000 10000 Frequency (KHz) www.acutechnology.com 5 Rev. 1.3 May 3, 2005 AQ102 Acutechnology Semiconductor Inc. Package Dimensions SOT23-3, SOT23-4, SOT23-5, SOT23-6 www.acutechnology.com 6 Rev. 1.3 May 3, 2005 AQ102 Acutechnology Semiconductor Inc. Package Dimensions (contd.) SC70-3, SC70-4, SC70-5, SC70-6 Contact Information Acutechnology Semiconductor Inc. 3487 McKee Rd. Suite 52 San Jose CA , USA 95127 TEL: FAX: website: (408) 259-2300 (408) 259-9160 www.acutechnology.com Disclaimer The information furnished by Acutechnology in this data sheet is believed to be accurate and reliable. However, Acutechnology assumes no responsibility for its use. Acutechnology reserves the right to change circuitry and specifications at any time without notification to the customer. Life Support Policy Acutechnology Products are not designed or authorized for use as components in life support devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. www.acutechnology.com 7 Rev. 1.3 May 3, 2005