AQ432 1.24V Shunt Ref/Amplifier TO-92, SOT23, SC70 Package Product Specification Revision 1.0 General Description May 15, 2007 Applications The AQ432 is a low voltage reference/ amplifier suited for the control loop of low voltage power supplies. Functionally similar to the ubiquitous TL431, the AQ432 has a lower 1.24V reference and a much wider range of operating currents. Particular care was taken in the design to minimize overshoot at startup and to allow wide AC bandwidth. Unlike other 1.24V reference/amplifiers, the AQ432 is designed to be stable under all conditions and does not suffer from the common overshoot issued associated with other parts low voltage parts • • • • Power supply control loop Low TC low voltage reference Power management applications Direct replacement for AP432, AS432, SPX432, TLV431, and LMV431 Features • • • • Low voltage reference: 1.24V 40 uA to 100 mA operation Low TC voltage reference Improved AC, DC performance compared to 1.24V part types • Offered in ultra small SC70 package • RoHS compliant Pin Configuration Pin Descriptions Pin Name CATH REF ANODE www.acutechnology.com Function Output and supply terminal, must be greater than 1.2V for normal operation Input, nominally 1.24V in normal operation. Ground and Substrate AQ432 AQ432 Acutechnology Semiconductor Inc. Ordering Information VOUT Wrap Ordering Number TO-92-3 1.24V T&R AQ432BY-N3-12-TRL 0.5 SOT-23-3 1.24V T&R AQ432BZ-N3-12-TRL 1.0 0.5 1.0 SOT-23-3 SOT-23-3 SC70-3 1.24V 1.24V 1.24V T&R T&R T&R AQ432BYM3-12-TRL AQ432BZM3-12-TRL AQ432BY-C3-12-TRL 1.24V T&R AQ432BZ-C3-12-TRL Device Operating Tj %Tol AQ432 -40C˚ ≤ 105C˚ 1.0 AQ432 -40C˚ ≤ 105C˚ AQ432 AQ432 AQ432 -40C˚ ≤ 105C˚ -40C˚ ≤ 105C˚ -40C˚ ≤ 105C˚ PKG Type AQ432 -40C˚ ≤ 105C˚ 0.5 SC70-3 Note: The TRL parts are Lead Free and RoHS compliant. Absolute Maximum Ratings Stress greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These stress ratings only, and functional operation of the device at these or any conditions beyond those indicated under recommended Operating Conditions is not implied. Exposure to “Absolute Maximum Rating” for extended periods may affect device reliability. Use of standard ESD handling precautions is required. Parameter Value Units CATH Voltage 18 V REF Current 3 mA CATH, ANODE Currents 150 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 unless otherwise stated. Ambient temperature must be de-rated based upon power dissipation and package thermal characteristics. Symbol VREF ∆VREF ∆VREF ∆VCATH IREF Parameter Conditions Min Typ Max Units Reference Voltage 25ºC; VREF=VCATH; ICATH =10mA 0.5% option 1.234 1.240 1.246 V 1.0% option 1.228 1.240 1.252 V VREF Temperature deviation –40ºC <Tj<105ºC. 4 12 mV Ratio of VREF Change to VCATH Change (Line Reg; 1/gain) ICATH=10mA, VCATH = VREF to 6V 0.3 1 mV/V Reference input current ICATH=10mA 0.2 0.4 µA ∆IREF IREF Temperature Deviation 0.04 0.2 µA ICATH(min) Minimum Cathode Current 18 40 µA ICATH(OFF) Off-State Cathode Current VREF=0V; VCATH=16V 100 nA Dynamic Output Impedance ICATH=0.1 to 100mAf ≤ 1.0 kHz 0.4 Ω rCATH www.acutechnology.com 2 0.3 Rev. 1.0 May 15, 2007 AQ432 Acutechnology Semiconductor Inc. Typical Performance Characteristics Reference voltage vs Junction temperature Reference input current vs junction tem perature 250 Reference input current (nA) 1.246 Reference voltage (V) 1.244 1.242 1.24 1.238 1.236 1.234 0 25 50 75 100 125 150 Junction temperature (degrees C) 220 210 200 190 180 170 160 0 25 50 75 100 125 150 Junction tem perature (degrees C) Cathode current vs Cathode voltage Cathode current vs Cathode voltage 150 50 100 40 Cathode current (uA) Cathode current (mA) 230 150 -50 -25 1.232 -50 -25 240 50 0 -50 30 20 10 0 -10 -100 -1 -0.5 0 0.5 1 0 1.5 1 1.5 Cathode voltage (V) Cathode voltage (V) www.acutechnology.com 0.5 3 Rev. 1.0 May 15, 2007 AQ432 Acutechnology Semiconductor Inc. Typical Performance Characteristics (contd.) Delta Reference voltage per delta cathode voltage vs junction temperature Delta reference voltage per delta cathode voltage (mV/V) Off-state cathode current vs Junction temperature Off-state cathode current (nA) 80 70 60 50 40 30 20 10 0 -50 -25 0 0 -0.02 -0.04 -0.06 -0.08 -0.1 -0.12 -0.14 -0.16 -0.18 25 50 75 100 125 150 -50 -25 Junction temperature (degrees C) 50 75 100 125 150 Dynamic impedance vs frequency 100 100 80 Dynamic impedance (0hms) Open loop voltage gain (dB) 25 Junction temperature (degrees C) Open lop voltage gain vs frequency 60 40 20 0 -20 0.001 0 10 1 0.1 0.01 0.1 1 10 100 0.1 1000 10 100 1000 10000 Frequency (KHz) Frequency (KHz) www.acutechnology.com 1 4 Rev. 1.0 May 15, 2007 AQ432 Acutechnology Semiconductor Inc. Package Dimensions SOT23-3, SOT23-4, SOT23-5, SOT23-6 www.acutechnology.com 5 Rev. 1.0 May 15, 2007 AQ432 Acutechnology Semiconductor Inc. Package Dimensions TO92-2, TO92-3 www.acutechnology.com 6 Rev. 1.0 May 15, 2007 AQ432 Acutechnology Semiconductor Inc. Package Dimensions SC70-3, SC70-4, SC70-5, SC70-6 Contact Information Acutechnology Semiconductor Inc. 3487 McKee Rd. Suite 52 San Jose CA , USA 95127 TEL: (408) 259-2300 FAX: (408) 259-9160 website: 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. 1.0 May 15, 2007