Data Sheet 150kHz 3A BUCK DC-DC CONVERTER AP3003 General Description Features The AP3003 series of regulators are fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 3A load with excellent line and load regulation. These regulators include internal frequency compensation and a fixed frequency oscillator so that they are easy to use. A system adopting AP3003 requires a minimum number of external components to work. · · · · · · · · · A standard series of inductors, optimized for use with the AP3003 series, are available from several manufacturers. This feature greatly simplifies the design of switch-mode power supplies. · These ICs are available in TO-220-5 and TO-263-5 packages. 3.3V, 5V, 12V Fixed (±4% Tolerance) and Adjustable (±3% Tolerance) Output Versions Guaranteed 3A Output Load Current 150kHz Fixed Frequency Internal Oscillator Input Voltage Range up to 32V Requires only 4 external components High Efficiency up to 90% Excellent Line and Load Regulation TTL Shutdown Capability Low Power Standby Mode, IQ Typically 80µA Built-in Current Limit Protection and Thermal Shutdown Circuit Applications · · · · LCD Monitor and LCD TV On-Card DC-DC Converter DVD Recorder PDP TO-263-5 TO-220-5 Figure 1. Package Types of AP3003 Feb. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 1 Data Sheet 150kHz 3A BUCK DC-DC CONVERTER AP3003 Pin Configuration S Package (TO-263-5) T Package (TO-220-5) 5 4 3 2 1 ON/OFF FEEDBACK GND OUTPUT VIN 5 4 3 2 1 ON/OFF FEEDBACK GND OUTPUT VIN Metal Tab GND Metal Tab GND Figure 2. Pin Configuration of AP3003 (Top View) Pin Description Pin Number Pin Name 1 VIN 2 OUTPUT 3 GND 4 FEEDBACK 5 ON/OFF Function Unregulated input voltage Switch driver output Ground Feedback Pin. For fixed version, connect it to system output. For adjustable version, connect it with an external resistor and capacitor feedback network to program the system output voltage The TTL logic compatible input to control the regulator on or off Feb. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 2 Data Sheet 150kHz 3A BUCK DC-DC CONVERTER AP3003 Functional Block Diagram ON/OFF 5 1 1.23V REFERENCE 220 mV 2.5V REGULATOR 200 mV VIN 4.4Ω START UP + Bias Current 2.5V COMP Frequency Shift _ 150KHz OSC _ COMP + FEEDBACK 4 1:100 + R2 + _ R1 _ EA LATCH COMP DRIVER & INV 2 For 3.3V R1=2.49kΩ 5V R1=2.49kΩ 12V R1=2.49kΩ ADJ R1=Open THERMAL SHUTDOWN R2=4.18kΩ R2=7.57kΩ R2=21.8kΩ R2=0Ω 3 OUTPUT GND Figure 3. Functional Block Diagram of AP3003 Feb. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 3 Data Sheet 150kHz 3A BUCK DC-DC CONVERTER AP3003 Ordering Information AP3003 E1: Lead Free Circuit Type TR: Tape and Reel Blank: Tube ADJ: Adjustable Output 3.3: Fixed Output 3.3V 5.0: Fixed Output 5.0V 12: Fixed Output 12V Package T: TO-220-5 S: TO-263-5 Package TO-220-5 TO-263-5 Temperature Range -40 to 85oC -40 to 85oC Part Number Marking ID Lead Free Lead Free Packing Type AP3003T-ADJE1 AP3003T-ADJE1 Tube AP3003T-3.3E1 AP3003T-3.3E1 Tube AP3003T-5.0E1 AP3003T-5.0E1 Tube AP3003T-12E1 AP3003T-12E1 Tube AP3003S-ADJE1 AP3003S-ADJE1 Tube AP3003S-ADJTRE1 AP3003S-ADJE1 Tape & Reel AP3003S-3.3E1 AP3003S-3.3E1 Tube AP3003S-3.3TRE1 AP3003S-3.3E1 Tape & Reel AP3003S-5.0E1 AP3003S-5.0E1 Tube AP3003S-5.0TRE1 AP3003S-5.0E1 Tape & Reel AP3003S-12E1 AP3003S-12E1 Tube AP3003S-12TRE1 AP3003S-12E1 Tape & Reel BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Feb. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 4 Data Sheet 150kHz 3A BUCK DC-DC CONVERTER AP3003 Absolute Maximum Ratings (Note 1) Parameter Symbol Value Unit Input Voltage VIN 40 V ON/OFF Pin Voltage VON/OFF 40 V Feedback Pin Voltage VFB 40 V TJ 150 RθJA 60 oC/W TLEAD 260 oC TSTG -65 to 150 oC Operating Junction Temperature o C TO-220-5 Thermal Resistance (Junction to Ambient, No Heatsink) TO-263-5 Lead Temperature (Soldering, 10sec) Storage Temperature Range Note 1: 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 Parameter Maximum Input Voltage (Note 2) Symbol Value 3.3V 32 5.0V 32 12V VIN 32 ADJ (VOUT=3.2V) 32 ADJ (VOUT=2.5V) 25 Operating Junction Temperature TJ -40 to 125 Unit V oC Note 2: For ADJ version, the recommended supply voltage depends on the needed output voltage. Feb. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 5 Data Sheet 150kHz 3A BUCK DC-DC CONVERTER AP3003 Electrical Characteristics For 3.3V Output Voltage Version Unless otherwise specified, TJ=25oC. The specifications with boldface type apply over Full Operating Junction Temperature Range. Parameter Output Voltage Efficiency Symbol VOUT η Conditions 5.5V≤VIN≤32V, 0.2A≤ILOAD≤3A Min Typ Max Unit 3.168 3.135 3.3 3.432 3.465 V VIN=12V, ILOAD=3A 75 % For 5V Output Voltage Version Unless otherwise specified, TJ=25oC. The specifications with boldface type apply over Full Operating Junction Temperature Range. Parameter Output Voltage Efficiency Symbol VOUT η Conditions 7V≤VIN≤32V, 0.2A≤ILOAD≤3A Min Typ Max Unit 4.800 4.750 5 5.200 5.250 V VIN=12V, ILOAD=3A 80 % For 12V Output Voltage Version Unless otherwise specified, TJ=25oC. The specifications with boldface type apply over Full Operating Junction Temperature Range. Parameter Output Voltage Efficiency Symbol VOUT η Conditions 15V≤VIN≤32V, 0.2A≤ILOAD≤3A Min Typ Max Unit 11.52 11.40 12.0 12.48 12.60 V VIN=24V, ILOAD=3A 88 % For ADJ Output Voltage Version Unless otherwise specified, TJ=25oC. The specifications with boldface type apply over Full Operating Junction Temperature Range. Parameter Feedback Voltage Efficiency Symbol VFB η Conditions 4.5V≤VIN≤25V, 0.2A≤ILOAD≤3A, VOUT programmed for 2.5V VIN=12V, ILOAD=3A, VOUT=2.5V Feb. 2007 Rev. 1. 1 Min Typ Max Unit 1.193 1.18 1.23 1.267 1.28 V 73 % BCD Semiconductor Manufacturing Limited 6 Data Sheet 150kHz 3A BUCK DC-DC CONVERTER AP3003 Electrical Characteristics (Continued) For All Output Voltage Versions Unless otherwise specified , VIN=12V for 3.3V, 5V and adjustable version, ILOAD=500mA, TJ Range. =25oC. Parameter Feedback Bias Current Oscillator Frequency VIN=24V for 12V version, Specifications with boldface type apply over Full Operating Junction Temperature Symbol IFB f Conditions Min Adjustable Version Only, VFB=1.3V (Note 3) 127 110 Typ Max Unit 10 50 100 nA 150 173 173 kHz 1.5 1.6 V Saturation Voltage VSAT ILOAD=3A ( No output devices, VFB=0V) 1.2 Maximum Duty Cycle DMAX VFB=0V 100 % Minimum Duty Cycle DMIN VFB=1.3V 0 % Current Limit Output Leakage Current Quiescent Current Standby Quiescent Current ON/OFF Pin Logic Input Threshold Voltage ICL ISWL IQ ISTBY 3.6 3.4 Peak Current , No output devices, VFB=0V 4.5 6.9 7.5 A Output=0V, No output devices, VFB=1.3V, VIN=32V 50 Output=-1V, No output devices, VFB=1.3V, VIN=32V 2 30 mA VFB=1.3V 5 10 mA ON/OFF Pin=5V, VIN=18V 80 200 250 µA VIL Regulator ON VIH Regulator OFF µA 0.6 V 2.0 IH VPIN5=2.5V (Regulator OFF) 5 15 µA IL VPIN5=0.5V (Regulator ON) 0.02 5 µA ON/OFF Pin Input Current Note 3: The switching frequency is reduced when the second stage current limit is activated. Note 4: The specifications with boldface are GBD (Guaranteed By Design ). Feb. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 7 Data Sheet 150kHz 3A BUCK DC-DC CONVERTER AP3003 90.0 90.0 87.5 87.5 85.0 85.0 82.5 82.5 80.0 80.0 Efficiency (%) Efficiency (%) Typical Performance Characteristics 77.5 75.0 72.5 70.0 67.5 77.5 75.0 72.5 70.0 67.5 65.0 65.0 3.3V Version O VIN=12V, TJ=25 C 62.5 60.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 5.0V Version O VIN=12V, TJ=25 C 62.5 60.0 0.0 3.5 0.5 1.0 Output Current (A) 2.0 2.5 3.0 3.5 Figure 5. Efficiency vs. Output Current 90.0 90.0 87.5 87.5 85.0 85.0 82.5 82.5 80.0 80.0 efficiency (%) Efficiency (%) Figure 4. Efficiency vs. Output Current 77.5 75.0 72.5 70.0 77.5 75.0 72.5 70.0 67.5 67.5 12V Version o VIN=24V,TJ=25 C 65.0 62.5 60.0 0.0 1.5 Output Current (A) 0.5 1.0 1.5 2.0 2.5 3.0 65.0 ADJ Version (VOUT Regulated to 2.5V) 62.5 VIN=10V, TJ=25 C O 60.0 0.0 3.5 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Output Current (A) Output Current (A) Figure 6. Efficiency vs. Output Current Figure 7. Efficiency vs. Output Current Feb. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 8 Data Sheet 150kHz 3A BUCK DC-DC CONVERTER AP3003 Typical Performance Characteristics (Continued) 92.5 0.20 90.0 0.16 Output Voltage Change (%) 87.5 85.0 Efficiency (%) 82.5 80.0 77.5 75.0 72.5 O IOUT=3A, TJ=25 C 3.3V Version 5.0V Version 12V Version ADJ Version (VOUT=2.5V) 70.0 67.5 65.0 62.5 4 8 12 16 20 24 28 0.08 0.04 0.00 -0.04 -0.08 VOUT=5.0V ILOAD=0.1A -0.12 -0.16 O TJ=25 C -0.20 60.0 0 0.12 32 0 36 4 8 12 1.6 5.04 1.5 Switch Saturation Voltage (V) 5.05 Output Voltage (V) 5.03 5.02 5.01 5.00 4.99 4.98 4.97 4.95 0.0 VIN=12V, VOUT=5.0V 1.0 1.5 2.0 24 28 32 36 2.5 3.0 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 O TJ=25 C 0.5 20 Figure 9. Line Regulation Figure 8. Efficiency vs. Input Voltage 4.96 16 Input Voltage (V) Input Voltage (V) 0.6 0.0 3.5 O VIN=12V, TJ=25 C 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Switch Current (A) Output Current (A) Figure 10. Load Regulation Figure 11. Switch Saturation Voltage vs. Switch Current Feb. 2007 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 9 Data Sheet 150kHz 3A BUCK DC-DC CONVERTER AP3003 5.50 4.5 5.25 4.0 3.5 5.00 Quiescent Current (mA) Switch Current Limit (A) Typical Performance Characteristics (Continued) 4.75 4.50 4.25 4.00 3.0 2.5 2.0 1.5 1.0 O 3.75 TJ=25 C VON/OFF=0, Switch Off 0.5 VIN=12V 3.50 -40 0.0 -20 0 20 40 60 80 100 0 120 5 10 O Junction Temperature ( C) Figure 12. Switch Current Limit vs. Junction Temperature 25 30 35 40 180 Shutdown Quiescent Current (µA) 5.25 5.00 Quiescent Current (mA) 20 Figure 13. Quiescent Current vs. Supply Voltage 5.50 4.75 4.50 4.25 4.00 3.75 3.50 3.25 3.00 VIN=12V VON/OFF=0V, Switch OFF 2.75 2.50 -40 15 Supply Voltage (V) -20 0 20 40 60 80 100 160 140 120 100 80 60 40 O TJ=25 C VON/OFF=5V 20 0 120 0 o 4 8 12 16 20 24 28 32 36 Supply Voltage (V) Junction Temperature ( C) Figure 15. Shutdown Quiescent Current vs. Input Voltage Figure 14. Quiescent Current vs. Junction Temperature Feb. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 10 Data Sheet 150kHz 3A BUCK DC-DC CONVERTER AP3003 Typical Performance Characteristics (Continued) 8 1.5 7 ON/OFF Voltage (V) 1.4 ON/OFF Pin Current (µA) 1.6 OFF 1.3 1.2 1.1 ON 1.0 6 5 4 3 2 1 0.9 O VIN=12V 0.8 -40 -20 0 20 40 60 80 100 0 0.0 120 VIN=32V, TJ=25 C 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0 ON/OFF Pin Voltage (V) O Junction Temperature ( C) Figure 17. On/Off Pin Current vs. On/Off Pin Voltage Figure 16. On/Off Threshold Voltage vs. Junction Temperature 160 156 Frequency (kHz) 152 148 144 140 136 132 128 124 120 -40 -20 0 20 40 60 80 100 120 O Junction Temperature ( C) Figure 18. Switching Frequency vs. Junction Temperature Feb. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 11 Data Sheet 150kHz 3A BUCK DC-DC CONVERTER AP3003 Typical Application Regulated DC Output 3A Load 4 FEEDBACK 1 CIN 470µF AP3003-3.3V VIN 2 OUTPUT GND 3 + L1 22µH D1 1N5822 ON/OFF 5 + COUT 220µF L1: Sumida CDRH127/LDNP-220MC or Equivalent Figure 19. Typical Application of AP3003-3.3V 12V Unregulated DC Input FEEDBACK 1 CIN 470µF Regulated DC Output 3A Load 4 + VIN AP3003-5.0V 2 L1 22µH OUTPUT GND 3 ON/OFF 5 + D1 1N5822 COUT 220µF L1: Sumida CDRH127/LDNP-220MC or Equivalent Figure 20. Typical Application of AP3003-5.0V Feb. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 12 Data Sheet 150kHz 3A BUCK DC-DC CONVERTER AP3003 Typical Application (Continued) 24V Unregulated DC Input Regulated DC Output 3A Load 4 FEEDBACK 1 CIN 470µF AP3003-12V VIN 2 OUTPUT GND 3 + L1 22µH + D1 1N5822 ON/OFF 5 COUT 220µF L1: Sumida CDRH127/LDNP-220MC or Equivalent Figure 19. Typical Application of AP3003-12V R2 3.69k R1 3.6k 12V Unregulated DC Input 1 CIN 470µF + VIN AP3003-ADJ 2 OUTPUT GND 3 2.5V Regulated DC Output 3A Load CFF 33nF 4 FEEDBACK ON/OFF 5 D1 1N5822 L1 22µH + VOUT=1.23 * (R2+R1) R1 COUT 220µF L1: Sumida CDRH127/LDNP-220MC or Equivalent Figure 20. Typical Application of AP3003-ADJ Feb. 2007 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 13 Data Sheet 150kHz 3A BUCK DC-DC CONVERTER AP3003 Mechanical Dimensions TO-220-5 4.470(0.176) 4.670(0.184) 9.850(0.388) 10.150(0.400) φ3.790(0.149) 3.890(0.153) 1.170(0.046) 1.370(0.054) 8.200(0.323) 8.600(0.339) 11.760(0.463) 12.160(0.479) 2.590(0.102) 2.890(0.114) Unit: mm(inch) 13.500(0.531) 13.900(0.547) 0.710(0.028) 0.910(0.036) 2.520(0.099) 2.820(0.111) 1.700(0.067) TYP 6.700(0.264) 6.900(0.272) Feb. 2007 Rev. 1. 1 0.310(0.012) 0.530(0.021) BCD Semiconductor Manufacturing Limited 14 Data Sheet 150kHz 3A BUCK DC-DC CONVERTER AP3003 Mechanical Dimensions (Continued) TO-263-5 4.470 (0.176) 4.670 (0.184) 9.880 (0.389) 10.180 (0.401) 1.170 (0.046) 1.370 (0.054) 5.600 (0.220) REF 15.140 (0.596) 15.540 (0.612) 1.560 (0.061) 1.760 (0.069) Unit: mm(inch) 8.200 (0.323) 8.600 (0.339) 0.000 (0.000) 0.150 (0.006) 5.080 (0.200) 5.480 (0.216) 1.700 (0.067) TYP 6.700 (0.264) 6.900 (0.272) 0.710 (0.028) 0.910 (0.036) Feb. 2007 Rev. 1. 0 0.310 (0.012) 0.530 (0.021) 2.340 (0.092) 2.740 (0.108) BCD Semiconductor Manufacturing Limited 15 http://www.bcdsemi.com IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications herein. 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