AP4312Q CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER Description Pin Assignments NEW PRODUCT AP4312Q is an Automotive Grade product that is AEC-Q100 grade 1 qualified. It is a highly integrated solution for the constant voltage/constant current mode SMPS application and linear DC/DC regulator (used in Automotive application). (Top View) Pin 1 Mark The AP4312Q contains one 1.21V voltage reference, one low voltage reference used in current sensing circuit and two operational amplifiers. The 1.21V voltage reference, combined with one operational amplifier, makes of an ideal voltage controller for use in adapters and battery chargers. The low voltage reference, combined with another operational amplifier, makes of an ideal current limiter for output low side current sensing. The AP4312Q is fully compatible with AP4306 in functionality and electrical characteristics except its lower reference voltage for current control loop, thus higher power efficiency in SMPS applications such as low power charger can be realized with AP4312Q compared to AP4306. The AP4312Q is available in SOT26 package. VCTRL 1 6 GND 2 5 VSENSE VOUT 3 4 ICTRL VCC SOT26 Applications Adapters Battery Chargers Automotive Features Constant Voltage and Constant Current Control Precision Internal Voltage Reference Low External Component Count Easy Compensation Low Supply Current: 180A Current Control Loop Reference: 70mV Operating Supply Voltage: 1.7V to 18V Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. AP4312Q Document number: DS37444 Rev. 4 - 2 1 of 11 www.diodes.com November 2015 © Diodes Incorporated AP4312Q Typical Applications Circuit VOUT+ To primary R2 AP4312Q VCC R4 NEW PRODUCT 1.210V C1 R3 VOUT IL + + VCTRL Load C3 GND R5 ICTRL VSENSE R1 R6 500 VOUTR SS VOUT VREF R1 R 2 R1 CurrentLimit VSENSE RSS Typical Application 1 VOUT+ To primary AP4312Q VCC R4 1.210V R3 VOUT + R2 IL C1 + VCTRL Load C3 GND I CTRL R5 VSENSE R1 R6 500 VOUTR SS VOUT [VREF ( I L RSS )] R1 R2 ( I L RSS ) R1 CurrentLimit VSENSE RSS Typical Application 2 AP4312Q Document number: DS37444 Rev. 4 - 2 2 of 11 www.diodes.com November 2015 © Diodes Incorporated AP4312Q Typical Applications Circuit (Cont.) VOUT+ To primary AP4312Q VCC R4 NEW PRODUCT 1.210V IL C1 R3 VOUT R2 + + VCTRL Load C3 GND ICTRL R5 VSENSE R1 R6 500 VOUTRSS VOUT VREF R1 R2 ( I L RSS ) R1 CurrentLimit VSENSE VREF VSENSE VREF RSS Typical Application 3 From Battery VOUT+ Q1 R4 AP4312Q R2 IL VCC 1.210V R3 VOUT C1 + + VCTRL Load C3 GND ICTRL R5 V SENSE R1 R6 500 VOUTRSS Typical Application 4 VOUT VREF AP4312Q Document number: DS37444 Rev. 4 - 2 R1 R2 ( I L RSS ) R1 CurrentLimit 3 of 11 www.diodes.com VSENSE VREF VSENSE VREF RSS November 2015 © Diodes Incorporated AP4312Q NEW PRODUCT Pin Descriptions Pin Number Pin Name Function 1 VCTRL Input pin of the voltage control loop 2 GND Ground 3 VOUT Output pin. Sinking current only 4 ICTRL Input pin of the current control loop 5 VSENSE Input pin of the current control loop 6 VCC Power Supply Functional Block Diagram V CC 6 1.210V 3 1 2 4 VOUT V CTRL GND 5 I CTRL VSENSE Absolute Maximum Ratings (Note 4) Parameter Symbol Rating Unit 20 V VCC Power Supply Voltage VIN Input Voltage -0.3 to VCC V TJ Junction Temperature +150 C TSTG Storage Temperature -65 to +150 C TLEAD Lead Temperature (Soldering, 5sec) θJA +260 250 Thermal Resistance (Junction to Ambient) AP4312Q Document number: DS37444 Rev. 4 - 2 4 of 11 www.diodes.com C C/W November 2015 © Diodes Incorporated AP4312Q Note 4: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. Recommended Operating Conditions Symbol NEW PRODUCT VCC Parameter Power Supply Voltage Electrical Characteristics Symbol Min Max Unit 1.7 18 V (@VCC=5V, TA=+25C, unless otherwise specified.) Parameters Conditions Min Typ Max TA=+25C – 180 – -40C <TA<+105C – – 300 TA=+25C 1 3.5 – -40C <TA<+105C – 2.5 – Unit TOTAL CURRENT CONSUMPTION Total Supply Current Not Including the Output Sinking Current ICC μA VOLTAGE CONTROL LOOP Gmv VREF IIBV Transconductance of Voltage Control Loop Op-Amp (Sink Current Only) TA=+25C 1.204 -40C <TA<+105C 1.186 Voltage Control Loop Reference mA/mV 1.216 1.21 V 1.234 TA=+25C – 50 – -40C <TA<+105C – 100 – TA=+25C 1.5 7 – -40C <TA<+105C 1.5 7 – TA=+25C 67.9 Input Bias Current (VCTRL) nA CURRENT CONTROL LOOP Gmi VSENSE IIBI Transconductance of Current Control Loop Op-Amp (Sink Current Only) mA/mV 72.1 70 Current Control Loop Reference mV -40C <TA<+105C 66 TA=+25C – 18 – -40C <TA<+105C – 35 – TA=+25C, ISINK=2mA – 100 – -40C <TA<+105C, ISINK=2mA – 100 – TA=+25C – 27 50 -40C <TA<+105C – 35 – Current Out of Pin ICTRL at VSENSE 74 μA OUTPUT STAGE VOL Low Output Voltage Level Output Short Circuit Current. Output to VCC. Sink Current Only IOS mV mA Thermal Impedance Symbol θJC Parameter Thermal Resistance (Junction to Case) AP4312Q Document number: DS37444 Rev. 4 - 2 5 of 11 www.diodes.com Value Unit 84 C/W November 2015 © Diodes Incorporated AP4312Q Performance Characteristics Voltage Control Loop Reference vs. Ambient Temperature Current Control Loop Reference vs. Ambient Temperature 74 1.230 73 VCC=1.7V VCC=5V VCC=18V 1.220 VSENSE (mV) VREF (V) 1.210 1.205 71 70 69 1.200 68 1.195 67 1.190 -20 0 20 40 60 80 100 VCC=1.7V VCC=5V VCC=18V 72 1.215 66 -40 120 -20 0 o Ambient Temperature ( C ) 40 60 80 100 120 140 o Current Out of Pin ICTRL at VSENSE vs. Ambient Temperature 24 50 VCC=1.7V VCC=5V VCC=18V 22 VCC=1.7V VCC=5V VCC=18V 40 20 18 30 IIBI (A) IIBV (nA) 20 Ambient Temperature ( C) Input Bias Current (VCTRL) vs. Ambient Temperature 20 16 14 12 10 10 0 -20 0 20 40 60 80 100 -20 120 0 20 40 60 80 100 120 o Ambient Temperature ( C ) o Ambient Temperature ( C ) Transconductance of Voltage Control Loop Op-Amp vs. Ambient Temperature Transconductance of Current Control Loop Op-Amp vs. Ambient Temperature 8 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 -20 VCC=1.7V VCC=5V VCC=18V 7 Gmi (mA/mV) 6 Gmv (mA/mV) NEW PRODUCT 1.225 5 4 3 2 1 0 AP4312Q-20 0 20 40 60 80 Document number: DS37444 Rev. 4 - 2Temperature ( oC ) Ambient 100 120 6 of 11 www.diodes.com VCC=1.7V VCC=5V VCC=18V 0 20 40 60 80 o Ambient Temperature ( C ) 100 November 120 2015 © Diodes Incorporated AP4312Q Performance Characteristics (Cont.) Low Output Level of Voltage Control Loop Op-Amp vs. Ambient Temperature Low Output Level of Current Control Loop Op-Amp vs. Ambient Temperature 50 50 VCC=1.7V VCC=5V VCC=18V 30 30 VOLC (mV) VOLV (mV) VCC=1.7V VCC=5V VCC=18V 40 20 20 10 10 0 -20 0 20 40 60 80 100 0 -20 120 0 20 60 80 100 120 Ambient Temperature ( C ) Ambient Temperature ( C ) Output Short Circuit Current of Voltage Control Loop Op-Amp vs. Ambient Temperature Output Short Circuit Current of Current Control Loop Op-Amp vs. Ambient Temperature 70 70 60 60 50 50 IOSC (mA) IOSV (mA) 40 o o 40 30 VCC=1.7V VCC=5V VCC=18V 20 10 0 -20 0 20 40 60 80 100 40 30 VCC=1.7V VCC=5V VCC=18V 20 10 0 -20 120 0 20 40 60 80 100 120 o o Ambient Temperature ( C ) Ambient Temperature ( C ) Total Supply Current Not Including the Output Sinking Current vs. Ambient Temperature Low Output Voltage Level vs. Sink Current 800 300 VCC=1.7V VCC=5V VCC=18V 250 700 600 200 500 VOL (mV) ICC (A) NEW PRODUCT 40 150 400 300 100 200 50 0 -20 AP4312Q 100 0 0 20 40 60 80 o Ambient Temperature ( C ) Document number: DS37444 Rev. 4 - 2 100 0 120 7 of 11 www.diodes.com 5 10 15 20 Sink Current (mA) 25 30 35 November 2015 © Diodes Incorporated AP4312Q Ordering Information NEW PRODUCT AP4312Q XX XX - G1 Product Name Package K6 : SOT26 Packing RoHS/Green TR : Tape & Reel G1 : Green Package Part Number Marking ID Packing SOT26 AP4312QK6TR-G1 GKD 3000/Tape & Reel Marking Information (Top View) : Logo XXX: Marking ID (See Ordering Information) AP4312Q Document number: DS37444 Rev. 4 - 2 8 of 11 www.diodes.com November 2015 © Diodes Incorporated AP4312Q Package Outline Dimensions (All dimensions in mm(inch).) (1) Package Type: SOT26 0° 2.820(0.111) 8° NEW PRODUCT 3.100(0.122) 0.300(0.012) 0.500(0.020) 5 4 2 3 0.300(0.012) 0.600(0.024) 1.500(0.059) 1.700(0.067) 2.650(0.104) 3.000(0.118) 6 0.200(0.008) Pin 1 Mark 1 0.700(0.028)REF 0.950(0.037)TYP 0.000(0.000) 0.150(0.006) 1.800(0.071) 2.000(0.079) 0.100(0.004) 0.200(0.008) 0.900(0.035) 1.450(0.057) MAX 1.300(0.051) AP4312Q Document number: DS37444 Rev. 4 - 2 9 of 11 www.diodes.com November 2015 © Diodes Incorporated AP4312Q Suggested Pad Layout (1) Package Type: SOT26 NEW PRODUCT E E Y G Z X Dimensions Z (mm)/(inch) G (mm)/(inch) X (mm)/(inch) Y (mm)/(inch) E (mm)/(inch) Value 3.600/0.142 1.600/0.063 0.700/0.028 1.000/0.039 0.950/0.037 AP4312Q Document number: DS37444 Rev. 4 - 2 10 of 11 www.diodes.com November 2015 © Diodes Incorporated AP4312Q IMPORTANT NOTICE NEW PRODUCT DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 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