Data Sheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER General Description Features The AZ34063U is a monolithic switching regulator control circuit which contains the primary functions required for DC-DC converters. This device consists of internal temperature compensated reference, voltage comparator, controlled duty cycle oscillator with active current limit circuit, driver and high current output switch. • • • • • • • The AZ34063U is specifically designed as a general DC-DC converter to be used in Step-Down, Step-Up and Voltage-Inverting applications with a minimum number of external components. AZ34063U Operation from 3.0V to 36V Input Low Standby Current Current Limiting Output Switch Current to 1.5A Output Voltage Adjustable Operation Frequency up to 180kHz Precision 2% Reference Applications · · · · The AZ34063U is available in 2 packages: SOIC-8 and DIP-8. SOIC-8 Battery Chargers ADSL Modems Hubs Negative Voltage Power Supplies DIP-8 Figure 1. Package Types of AZ34063U Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 1 Data Sheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U Pin Configuration P Package (DIP-8) M Package (SOIC-8) Switch Collector Switch Emitter Timing Capacitor GND Switch Collector Switch Emitter Timing Capacitor 1 1 8 8 Driver Collector 2 2 7 7 IPK Sense 3 3 6 6 VCC 4 4 5 5 Comparator Inverting Input GND 1 8 Driver Collector 2 7 IPK Sense 3 6 VCC 4 5 Comparator Inverting Input Figure 2. Pin Configuration of AZ34063U (Top View) Functional Block Diagram Driver Collector 1 8 B S A Switch Collector Q R IPK Sense 7 2 Ipk IPK CT OSC VCC 6 3 Timing Capacitor 4 GND 1.25V Reference Regulator + - Comparator Inverting Input Switch Emitter 5 Figure 3. Functional Block Diagram of AZ34063U Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 2 Data Sheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U Pin Description Pin Number Pin Name Function 1 Switch Collector 2 Switch Emitter 3 Timing Capacitor 4 GND 5 Comparator Inverting Input 6 VCC 7 IPK Sense 8 Driver Collector Internal switch transistor collector Internal switch transistor emitter Timing Capacitor to control the switching frequency Ground pin for all internal circuits Inverting input pin for internal comparator Voltage supply Peak Current Sense Input by monitoring the voltage drop across an external current sense resistor to limit the peak current through the switch Voltage driver collector Ordering Information AZ34063U - Circuit Type G1: Green Package M: SOIC-8 P: DIP-8 TR: Tape and Reel Blank: Tube Package Temperature Range SOIC-8 -40 to 85oC DIP-8 -40 to 85oC Part Number Marking ID Packing Type AZ34063UM-G1 34063UM-G1 Tube AZ34063UMTR-G1 34063UM-G1 Tape & Reel AZ34063UP-G1 AZ34063UP-G1 Tube BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant and green. Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 3 Data Sheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U Absolute Maximum Ratings (Note 1) Parameter Symbol Value Unit Power Supply Voltage VCC 40 V Comparator Input Voltage Range VIR -0.3 to 40 V Switch Collector Voltage VC(switch) 40 V Switch Emitter Voltage (VPIN 1=40V) VE(switch) 40 V Switch Collector to Emitter Voltage VCE(switch) 40 V Driver Collector Voltage VC(driver) 40 V Driver Collector Current (Note 2) IC(driver) 100 mA ISW 1.5 A 1.25 W 780 mW Switch Current Power Dissipation (TA=25oC) Thermal Resistance DIP-8 PD SOIC-8 DIP-8 100 θJA SOIC-8 Operating Junction Temperature Lead Temperature (Soldering, 10s) Storage Temperature Range 160 o C/W TJ 150 o TLEAD 260 o TSTG -65 to 150 o ESD (Human body model) 2000 C C C V 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. Note 2: Maximum package power dissipation limits must be observed. Recommended Operating Conditions Parameter Supply Voltage Ambient Temperature Symbol Min Max Unit VCC 3 36 V TA -40 85 o Jan. 2013 Rev. 1. 3 C BCD Semiconductor Manufacturing Limited 4 Data Sheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U Electrical Characteristics (VCC=5.0V, TA=-40 to 85oC, unless otherwise specified.) Parameter Symbol Conditions Min Typ Max Unit 30 38 45 KHz OSCILLATOR VPIN5=0V, CT=1.0nF Frequency fOSC Charge Current ICHG VCC=5.0V to 36V, TA=25oC 30 38 45 μA IDISCHG VCC=5.0V to 36V, TA=25oC 180 240 290 μA Discharge to Charge Current IDISCHG/ICHG Pin 7 to VCC, TA=25oC Ratio 5.2 6.5 7.5 Current Limit Sense Voltage 250 300 350 mV Discharge Current VIPK(sense) TA=25oC ICHG=IDISCHG, TA=25oC OUTPUT SWITCH (Note 3) Saturation Voltage, Dalington Connection VCE(sat) ISW=1.0A, Pins 1, 8 connected, Common Emitter 1.0 1.3 V Saturation Voltage (Note 4.) VCE(sat) ISW=1.0A, RPIN8=82Ω to VCC, Forced β=20, Common Emitter 0.45 0.7 V 100 μA DC Current Gain Collector Off-State Current hFE IC(off) ISW=1.0A, VCE=5.0V, TA=25oC 50 75 VCE=36V 0.01 TA=25oC 1.225 1.250 1.275 TA=-40 to 85oC 1.21 COMPARATOR Threshold Voltage Threshold Voltage Line Regulation Input Bias Current VTH V 1.250 1.29 VCC=3.0V to 36V 1.4 5 mV IIB VIN=0V -20 -400 nA ICC VCC=5.0V to 36V, CT=1.0nF, VPIN7=VCC, VPIN5>VTH, VPIN2=GND, other pins open 4 mA REGLINE TOTAL DEVICE Supply Current Note 3: Low duty cycle pulse technique are used during test to maintain junction temperature as close to ambient temperature as possible. Note 4: If the output switch is driven into hard saturation (non-Darlington configuration) at low switch currents (≤300mA) and high driver currents (≥30mA), it may take up to 2.0μs for it to come out of saturation. This condition will shorten the off time at frequencies 30KHz, and is magnified at high temperatures. This condition does not occur with a Darlington configuration, since the output switch cannot saturate. If a non-Darlington configuration is used, the following output drive condition is recommended: Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 5 Data Sheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U Electrical Characteristics (Continued) Forced β of output switch: IC output ≥ 10 ICdriver - 7.0mA* * The 100Ω resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts. Typical Performance Characteristics 1000 VCC=5.0V VPIN7=VCC VOSC Oscillator Voltage (V) 200mV/DIV Ton-off Output Switch On-Off Time (μs) (VCC=5.0V, TA=25oC, unless otherwise specified.) ton VPIN5=GND O TA=25 C 100 toff 10 VCC=5.0V VPIN7=VCC VPIN2=GND 1 0.1 1 10 Pin 1,5,8=open CT=1.0nF TA=25oC 100 Time 20μs/DIV CT Oscillator Timing Capacitor (nF) Figure 5. Timing Capacitor Waveform Figure 4. Output Switch On-Off Time vs. Oscillator Timing Capacitor 3.5 VCC=5.0V VPIN7=VCC 3.0 VPIN5=GND ICC Supply Current (mA) Oscillator Frequency (kHz) 100 O TA=25 C 10 1 2.5 2.0 CT=1.0nF 1.5 VPIN7=VCC VPIN2=GND 1.0 0.5 0.1 1 10 100 0 5 10 15 20 25 30 35 40 VCC Supply Voltage (V) CT Timing Capacitor (nF) Figure 6. Oscillator Frequency vs.Timing Capacitor Jan. 2013 Rev. 1. 3 Figure 7. Standard Supply Current vs. Supply Voltage BCD Semiconductor Manufacturing Limited 6 Data Sheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U Typical Performance Characteristics (Continued) (VCC=5.0V, TA=25oC, unless otherwise specified.) 1.4 1.2 Saturation Voltage (V) Saturation Voltage (V) 1.6 1.5 1.4 VCC=5.0V VPIN1,7,8=VCC VPIN3,5=GND 1.3 Darlington Connection 0.8 0.6 Forced β=20 VCC=5.0V VPIN7=VCC VPIN2,3,5=GND 0.4 0.2 O TA=25 C 1.2 1.0 O TA=25 C 0.0 0.0 -0.1 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 Collector Current (A) Emitter Current (A) Figure 9. Common Emitter Configuration Output Switch Figure 8. Emitter Follower Configuration Output Saturation Voltage vs. Collector Current Saturation Voltage vs. Emitter current 300 Feedback Voltage (V) Current Limit Sense Voltage (mV) 1.256 290 280 270 260 1.248 1.240 1.232 250 1.224 240 -60 -40 -20 0 20 40 60 80 100 120 -40 140 0 40 80 120 160 O Temperature ( C) Temperature ( C) Figure 10. Current Limit Sense Voltage vs. Temperature Figure 11. Feedback Voltage vs. Temperature O Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 7 Data Sheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U Typical Performance Characteristics (Continued) (VCC=5.0V, TA=25oC, unless otherwise specified.) 1.4 120 Saturation Voltage (V) Operation Frequency (kHz) 140 100 80 0 40 80 120 VCC=5.0V 0.8 CT=330pF -40 1.0 ISW =1.0A VCC=5.0V 60 1.2 PIN1 PIN8 Connected -40 160 0 40 80 120 160 O o Temperature ( C) Temperature ( C) Figure 13. Saturation Voltage vs. Temperature Figure 12. Operation Frequency vs. Temperature Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 8 Data Sheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U Typical Applications L1 150μH R3 180 8 1 B S A Q R 7 Ipk IPK Rsc 0.22 VIN 12V 2 OSC D1 1N5819 CT 6 + C1 100μF 3 CT 470pF 1.25V Reference Regulator + - 5 4 L2 1.0 μΗ U1 AZ34063U VOUT VOUT R2 2.2k 28V/175mA R1 47k + C2 330 μF + Optional Filter C3 100 μF Figure 14. Step-Up Converter (Note 5) Note 5: This is a typical step-up converter configuration. In the steady state, if the resistor divider voltage at pin 5 is greater than the voltage in the non-inverting input, which is 1.25V determined by the internal reference, the output of the comparator will go low. At the next swithching period, the output switch will not conduct and the output voltage will eventually drop below its nominal voltage until the divider voltage at pin 5 is lower than 1.25V. Then the output of the comparator will go high, the output switch will be allowed to conduct. Since VPIN5=VOUT* R2/(R1+R2)=1.25(V), the output voltage can be decided by VOUT=1.25 * (R1+R2)/R2 (V). Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 9 Data Sheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U Typical Applications (Continued) 1 8 B S A Q R 2 7 Ipk IPK Rsc 0.33 VIN 25V OSC D1 1N5819 CT 6 + C1 100μF L1 220 μH 3 CT 470 pF 1.25V Reference Regulator + - 4 5 L2 1.0 μH U1 AZ34063U VOUT VOUT R1 3.6k + R2 1.2k 5V/500mA C2 470 μF + Optional Filter C3 100 μF Figure 15. Step-Down converter (Note 6) Note 6: This is a typical step-down converter configuration. The working process in the steady state is similar to step-up converter, VPIN5=VOUT*R2/(R1+R2)=1.25 (V), the output voltage can be decided by VOUT=1.25* (R1+R2)/R2 (V). Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 10 Data Sheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U Typical Applications (Continued) 1 8 B S A Q R 7 Rsc 0.24 2 Ipk IPK OSC L1 88 μΗ CT 6 VIN 4.5-6V + C1 100 μF 3 1.25V Reference Regulator + - CT 470pF 5 D1 1N5819 4 U1 AZ34063U L2 1.0 μΗ VOUT VOUT -12V/100mA C2 1000 μF Optional Filter + R1 953 R2 8.2k C3 100 μF + Figure 16. Voltage Inverting Converter (Note 7) Note 7: This is a typical inverting converter configuration. The working process in the steady state is similar to step-up converter, the difference in this situation is that the voltage at the non-inverting pin of the comparator is equal to 1.25V+VOUT, then VPIN5=VOUT*R2/(R1+R2)=1.25V+VOUT, so the output voltage can be decided by VOUT=-1.25*(R1+R2)/R1 (V). Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 11 Data Sheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U Mechanical Dimensions SOIC-8 4.700(0.185) 5.100(0.201) 7° Unit: mm(inch) 0.320(0.013) 1.350(0.053) 1.750(0.069) 8° 8° 7° 0.675(0.027) 0.725(0.029) D 5.800(0.228) 1.270(0.050) 6.200(0.244) TYP D 20:1 0.300(0.012) R0.150(0.006) 0.100(0.004) 0.800(0.031) 0.200(0.008) 0° 8° 1.000(0.039) 3.800(0.150) 4.000(0.157) 0.330(0.013) 0.510(0.020) 0.190(0.007) 0.250(0.010) 0.900(0.035) 1° 5° R0.150(0.006) 0.450(0.017) 0.800(0.031) Note: Eject hole, oriented hole and mold mark is optional. Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 12 Data Sheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U Mechanical Dimensions (continued) DIP-8 Unit: mm(inch) 0.700(0.028) 7.620(0.300)TYP 1.524(0.060) TYP 6° 3.200(0.126) 3.600(0.142) 3.710(0.146) 4.310(0.170) 4° 4° 0.510(0.020)MIN 3.000(0.118) 3.600(0.142) 0.204(0.008) 0.360(0.014) 8.200(0.323) 9.400(0.370) 0.254(0.010)TYP 0.360(0.014) 0.560(0.022) 5° 6° 2.540(0.100) TYP 0.130(0.005)MIN 6.200(0.244) 6.600(0.260) R0.750(0.030) Φ3.000(0.118) Depth 0.100(0.004) 0.200(0.008) 9.000(0.354) 9.600(0.378) Note: Eject hole, oriented hole and mold mark is optional. Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 13 BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com IMPORTANT NOTICE IMPORTANT NOTICE BCD Semiconductor BCD Semiconductor Manufacturing Manufacturing Limited Limited reserves reserves the the right right to to make make changes changes without without further further notice notice to to any any products products or or specifispecifications herein. cations herein. BCD BCD Semiconductor Semiconductor Manufacturing Manufacturing Limited Limited does does not not assume assume any any responsibility responsibility for for use use of of any any its its products products for for any any particular purpose, particular purpose, nor nor does does BCD BCD Semiconductor Semiconductor Manufacturing Manufacturing Limited Limited assume assume any any liability liability arising arising out out of of the the application application or or use use of any of any its its products products or or circuits. circuits. 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