Data Sheet 1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063D General Description Features The AZ34063D 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. • • • • • • Operation from 3.0V to 36V Input Low Standby Current Current Limiting Output Switch Current to1A Output Voltage Adjustable Operation Frequency up to 180kHz (CT=100pF) • Precision 2% Reference The AZ34063D 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. Applications · · · · The AZ34063D 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 AZ34063D Mar. 2010 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 1 Data Sheet 1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063D Pin Configuration P Package (DIP-8) M Package (SOIC-8) Switch Collector Switch Emitter Timing Capacitor 1 8 Driver Collector 2 7 IPK Sense 3 6 VCC GND 4 5 Comparator Inverting Input Switch Collector 1 8 Driver Collector Switch Emitter 2 7 IPK Sense Timing Capacitor 3 6 VCC GND 4 5 Comparator Inverting Input Figure 2. Pin Configuration of AZ34063D (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 AZ34063D Mar. 2010 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 2 Data Sheet 1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063D 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 AZ34063D - Circuit Type G1: Green Package TR: Tape and Reel Blank: Tube M: SOIC-8 P: DIP-8 Package Temperature Range SOIC-8 -40 to 85oC DIP-8 -40 to 85oC Part Number Marking ID Packing Type AZ34063DM-G1 34063DM-G1 Tube AZ34063DMTR-G1 34063DM-G1 Tape & Reel AZ34063DP-G1 AZ34063DP-G1 Tube BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant and green. Mar. 2010 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 3 Data Sheet 1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063D 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 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 C TLEAD 260 o C TSTG -65 to 150 o ESD (Human body model) 2000 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 Mar. 2010 Rev. 1. 3 C BCD Semiconductor Manufacturing Limited 4 Data Sheet 1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063D Electrical Characteristics (VCC=5.0V, TA=-40 to 85oC, unless otherwise specified.) Parameter Symbol Conditions Min Typ Max Unit OSCILLATOR fOSC Frequency Charge Current Discharge Current Discharge to Charge Current Ratio VPIN5=0V, CT=1.0nF 30 38 45 KHz TA=25oC CT=330pF 75 88 100 KHz ICHG VCC=5.0V to 36 V, TA=25oC 30 38 45 µA IDISCHG VCC=5.0V to 36V, TA=25oC 180 240 290 µA 5.2 6.5 7.5 250 300 350 IDISCHG/ICHG Pin 7 to VCC, TA=25oC Current Limit Sense Voltage VIPK(sense) ICHG=IDISCHG, TA=25oC mV OUTPUT SWITCH (Note 3) Saturation Voltage, Dalington Connection VCE(sat) ISW=1A, Pins 1, 8 connected, Common Emitter 1.0 V Saturation Voltage (Note 4) VCE(sat) ISW=1A, RPIN8=82 Ω to VCC, Forced β=20, Common Emitter 0.45 V hFE ISW=1A, VCE=5.0V, TA=25oC DC Current Gain Collector Off-State Current 50 75 IC(off) VCE=36V 0.01 VTH TA=25oC 1.225 1.250 1.275 TA=-40 to 85oC 1.21 100 µA COMPARATOR Threshold Voltage Threshold Voltage Line Regulation Input Bias Current 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=1.0 nF, 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: Mar. 2010 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 5 Data Sheet 1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063D Electrical Characteristics (Continued) Forced β of output switch: IC output ≥ 10 IC driver - 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.) VPIN5=GND O TA=25 C 100 ton 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 CT Oscillator Timing Capacitor (nF) Time 20µs/DIV Figure 4. Output Switch On-Off Time vs. Figure 5. Timing Capacitor Waveform 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 7. Standby Supply Current vs. Supply Voltage Figure 6. Oscillator Frequency vs.Timing Capacitor Mar. 2010 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 6 Data Sheet 1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063D Typical Performance Characteristics (Continued) (VCC=5.0V, TA=25oC, unless otherwise specified.) 1.2 1.70 1.1 1.65 Darlington Connection 1.0 Saturation Voltage (V) Saturation Voltage (V) 0.9 1.60 1.55 1.50 VCC=5.0V 1.45 VPIN1,7,8=VCC VPIN3,5=GND 1.40 1.35 0.0 O TA=25 C 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 0.8 0.7 0.6 0.5 Forced β=20 0.4 VCC=5.0V 0.3 VPIN7=VCC 0.2 0.1 VPIN2,3,5=GND 0.0 TA=25 C O -0.1 0.0 1.3 0.1 0.2 0.3 0.4 Emitter Current (A) Figure 8. Emitter Follower Configuration Output Saturation Voltage vs. Emitter Current 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 Figure 9. Common Emitter Configuration Output Switch Saturation Voltage vs. Collector Current 1.27 300 295 1.26 290 Feedback Voltage (V) Current Limit Sense Voltage (mV) 0.5 Collector Current (A) 285 280 275 270 265 1.25 1.24 1.23 260 255 250 -60 -40 -20 0 20 40 60 80 100 120 1.22 140 -40 0 40 80 120 160 O O Temperature ( C) Temperature ( C) Figure 10. Current Limit Sense Voltage vs. Temperature Mar. 2010 Rev. 1. 3 Figure 11. Feedback Voltage vs. Temperature BCD Semiconductor Manufacturing Limited 7 Data Sheet 1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063D Typical Performance Characteristics (Continued) (VCC=5.0V, TA=25oC, unless otherwise specified.) 130 1.4 110 Saturation Voltage (V) Operation Frequency (kHz) 120 100 90 80 70 1.0 ISW =1.0A VCC=5.0V VCC=5.0V CT=330pF 60 50 1.2 -40 0 40 80 120 PIN1 PIN8 Connected 160 0.8 -40 0 40 80 120 160 o O Temperature ( C) Temperature ( C) Figure 13. Saturation Voltage vs. Temperature Figure 12. Operation Frequency vs. Temperature Mar. 2010 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 8 Data Sheet 1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063D Typical Applications L1 220µH R3 180 1 8 B S A Q R 2 7 Ipk IPK Rsc 0.4 OSC D1 1N5819 CT 6 VIN 12V + C1 100µF 3 CT 470pF 1.25V Reference Regulator + - 5 4 L2 1.0µH U1 AZ34063D VOUT R2 2.2k R1 47k + VOUT 28V/175mA 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). Mar. 2010 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 9 Data Sheet 1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063D Typical Applications (Continued) 8 1 B S Q A R 2 7 Ipk IPK Rsc 0.33 VIN 25V OSC D1 1N5819 CT + C1 100µF L1 220 µH 3 6 CT 470 pF 1.25V Reference Regulator + - 4 5 L2 1.0 µH U1 AZ34063D 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). Mar. 2010 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 10 Data Sheet 1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063D Typical Applications (Continued) 1 8 B S Q A R 2 7 Rsc 0.24 Ipk IPK OSC L1 88 µΗ CT 3 6 VIN 4.5-6V + C1 100 µF 1.25V Reference Regulator + - CT 470pF 5 D1 1N5819 4 U1 AZ34063D L2 1.0 µH 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). Mar. 2010 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 11 Data Sheet 1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063D 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. Mar. 2010 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 12 Data Sheet 1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063D 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) 9.400(0.370) Note: Eject hole, oriented hole and mold mark is optional. 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