AZ34063CP

Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER General Description The AZ34063C 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 AZ34063C 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. AZ34063C Features • • • • • • • Operation from 3.0V to 36V Input Low Standby Current Current Limiting Output Switch Current to 0.8A Output Voltage Adjustable Operation Frequency up to 180KHz (CT=100pF) Precision 2% Reference Applications · · · · Battery Chargers ADSL Modems Hubs Negative Voltage Power Supplies The AZ34063C is available in 2 packages: SOIC-8 and DIP-8. SOIC-8 DIP-8 Figure 1. Package Types of AZ34063C Sep. 2006 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 1 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Pin Configuration P/M Package (DIP-8/SOIC-8) Switch Collector Switch Emitter Timing Capacitor GND 1 2 3 4 8 7 6 5 Driver Collector IPK Sense VCC Comparator Inverting Input AZ34063C Top View Figure 2. Pin Configuration of AZ34063C Functional Block Diagram Driver Collector 8 B A S R Q 1 Switch Collector IPK Sense 7 Ipk IPK OSC 2 Switch Emitter CT VCC 6 3 Timing Capacitor + - 1.25V Reference Regulator Comparator Inverting Input 5 4 GND Figure 3. Functional Block Diagram of AZ34063C Sep. 2006 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 2 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Pin Description Pin Number 1 2 3 4 5 6 7 8 Pin Name Switch Collector Switch Emitter Timing Capacitor GND Comparator Inverting Input VCC IPK Sense Driver Collector Function 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 AZ34063C Ordering Information AZ34063C E1: Lead Free Blank: Tin Lead TR: Tape and Reel Blank: Tube Circuit Type Package M: SOIC-8 P: DIP-8 Package Temperature Range -40 to 85oC -40 to 85oC Part Number Tin Lead AZ34063CM AZ34063CMTR AZ34063CP Lead Free AZ34063CM-E1 AZ34063CMTR-E1 AZ34063CP-E1 Marking ID Tin Lead 34063CM 34063CM AZ34063CP Lead Free 34063CM-E1 34063CM-E1 AZ34063CP-E1 Packing Type Tube Tape & Reel Tube SOIC-8 DIP-8 BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Sep. 2006 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 3 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Absolute Maximum Ratings (Note 1) Parameter Power Supply Voltage Comparator Input Voltage Range Switch Collector Voltage Switch Emitter Voltage (VPIN 1=40V) Switch Collector to Emitter Voltage Driver Collector Voltage Driver Collector Current (Note 2) Switch Current Power Dissipation (TA=25 ℃ ) Thermal Resistance Operating Junction Temperature Lead Temperature (Soldering, 10s) Storage Temperature Range ESD (Human body model) DIP-8 SOIC-8 DIP-8 SOIC-8 Symbol VCC VIR VC(switch) VE(switch) VCE(switch) VC(driver) IC(driver) ISW PD RθJA TJ TLEAD TSTG Value 40 -0.3 to 40 40 40 40 40 100 0.8 1.25 780 100 160 150 260 -65 to 150 2000 Unit V V V V V V mA A W mW ℃ /W ℃ ℃ ℃ V AZ34063C 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 VCC TA Min 3 -40 Max 36 85 Unit V o C Sep. 2006 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 4 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Electrical Characteristics (VCC=5.0 V, TA=-40 to 85oC, unless otherwise specified.) AZ34063C Parameter OSCILLATOR Frequency Charge Current Discharge Current Discharge to Charge Current Ratio Current Limit Sense Voltage OUTPUT SWITCH (Note 3) Saturation Voltage, Dalington Connection Saturation Voltage (Note 4) DC Current Gain Collector Off-State Current COMPARATOR Threshold Voltage Threshold Voltage Line Regulation Input Bias Current TOTAL DEVICE Supply Current Symbol Conditions CT=1.0nF CT=330pF Min 30 75 30 180 5.2 250 Typ 38 88 38 240 6.5 300 Max 45 100 45 290 7.5 350 Unit KHz KHz µA µA fOSC ICHG IDISCHG VPIN5=0V, TA=25oC VCC=5.0V to 36 V, TA=25oC VCC=5.0V to 36V, TA=25oC IDISCHG/ICHG Pin 7 to VCC, TA=25oC VIPK(sense) ICHG=IDISCHG, TA=25oC mV VCE(sat) VCE(sat) hFE IC(off) ISW=0.8A, Pins 1, 8 connected, Common Emitter ISW=0.8 A, RPIN8=82 Ω to VCC, Forced β=20, Common Emitter ISW=0.8A, VCE=5.0V, TA=25oC VCE=36V TA=25oC TA=-40 to 85oC VCC=3.0V to 36V VIN=0V VCC=5.0V to 36V, CT=1.0 nF, VPIN7=VCC, VPIN5 > VTH, VPIN2=GND, other pins open 50 1.0 0.45 75 0.01 1.3 0.8 V V 100 µA VTH REGLINE IIB 1.225 1.250 1.275 1.21 1.250 1.4 -20 1.29 5 -400 V mV nA ICC 4 mA 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 2.0us 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: Sep. 2006 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 5 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Electrical Characteristics (Continued) Forced β of output switch: AZ34063C 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 Ton-off. Output Switch On-Off Time (µs) 1000 TA=25 C 100 O ton 10 toff Vosc. Oscillator Voltage (V) 200mV/DIV VCC=5.0V VPIN7=VCC VPIN5=GND 1 0.1 1 10 100 VCC=5.0V VPIN7=VCC VPIN2=GND Pin 1,5,8=open CT=1.0nF TA=25oC Time. 10µs/DIV CT, Oscillator Timing Capacitor (nF) Figure 4. Output Switch On-Off Time vs. Oscillator Timing Capacitor Figure 5. Timing Capacitor Waveform 3.5 100 Frequency (KHz) TA=25 C 10 O ICC. Supply Current (mA) VCC=5.0V VPIN7=VCC VPIN5=GND 3.0 2.5 2.0 1.5 CT=1.0nF VPIN7=VCC VPIN2=GND 1 1.0 0.5 0.1 1 10 100 0 5 10 15 20 25 30 35 40 CT, Oscillator Timing Capacitor (nF) VCC. Supply Voltage (V) Figure 6. Oscillator Frequency vs.Timing Capacitor Figure 7. Standby Supply Current vs. Supply Voltage Sep. 2006 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 6 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Typical Performance Characteristics (Continued) AZ34063C 1.65 1.2 1.1 1.60 1.0 0.9 Darlington Connection Saturation Voltage (V) Saturation Voltage (V) 1.55 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 1.50 Forced β=20 VCC=5.0V VPIN7=VCC VPIN2,3,5=GND TA=25 C 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 O 1.45 1.40 VCC=5.0V VPIN1,7,8=VCC VPIN3,5=GND TA=25 C O 1.35 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 -0.1 0.0 Emitter Current (A) Collector Current (A) Figure 8. Emitter Follower Configuration Output Saturation Voltage vs. Emitter Current Figure 9. Common Emitter Configuration Output Switch Saturation Voltage vs. Collector Current 300 Current Limit Sense Voltage (mV) 295 290 285 280 275 270 265 260 255 250 -60 -40 -20 0 20 40 60 O 80 100 120 140 Temperature ( C) Figure 10. Current Limit Sense Voltage vs. Temperature Sep. 2006 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 7 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Typical Applications L1 220µH AZ34063C R3 180 8 B A S R Q 1 7 Rsc 0.4 VIN 12V + C1 100µF Ipk IPK OSC CT 2 D1 1N5819 6 + 1.25V Reference Regulator 3 CT 470pF 5 4 L2 1.0µH VOUT VOUT + Optional Filter C3 100 µF U1 AZ34063C R2 2.2k R1 47k + 28V/175mA C2 330 µF Figure 10. 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). Sep. 2006 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 8 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Typical Applications (Continued) AZ34063C 8 B A SQ R 1 7 Rsc 0.33 Ipk IPK OSC CT 2 D1 1N5819 L1 220 µH VIN 25V + C1 100µF 6 1.25V Reference Regulator 3 CT 470 pF + - 5 4 L2 1.0 µH VOUT R1 3.6k + 5V/500mA C2 470 µF Optional Filter + VOUT U1 AZ34063C R2 1.2k C3 100 µF Figure 11. 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). Sep. 2006 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 9 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Typical Applications (Continued) AZ34063C 8 B A S R Q 1 7 Rsc 0.24 Ipk IPK OSC CT 2 L1 88 µΗ VIN 4.5-6V + 6 C1 100 µF 1.25V Reference Regulator 3 CT 470pF + - D1 1N5819 5 4 U1 AZ34063C L2 1.0 µH VOUT C3 100 µF VOUT R1 953 + R2 8.2k -12V/100mA Optional Filter + C2 1000 µF Figure 12. 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). Sep. 2006 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 10 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Mechanical Dimensions SOIC-8 Unit: mm(inch) AZ34063C 4.700(0.185) 5.100(0.201) 7° 1.350(0.053) 1.750(0.069) 0.320(0.013) 8° 7° 8° 0.675(0.027) 0.725(0.029) D 5.800(0.228) 6.200(0.244) D 20:1 1.270(0.050) TYP 0.100(0.004) 0.300(0.012) R0.150(0.006) φ 0.800(0.031) 0.200(0.008) 1.000(0.039) 3.800(0.150) 4.000(0.157) 0° 8° 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) Sep. 2006 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 11 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Mechanical Dimensions (Continued) DIP-8 Unit: mm(inch) AZ34063C 0.700(0.028) 7.620(0.300)TYP 1.524(0.060) TYP 6° 6° 5° 3.710(0.146) 4.310(0.170) 4° 3.200(0.126) 3.600(0.142) 4° 3.000(0.118) 3.600(0.142) 0.510(0.020)MIN 0.254(0.010)TYP 0.360(0.014) 0.560(0.022) 2.540(0.100) TYP 0.130(0.005)MIN 0.204(0.008) 0.360(0.014) 8.200(0.323) 9.400(0.370) 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) 6.200(0.244) 6.600(0.260) Sep. 2006 Rev. 1. 3 BCD Semiconductor Manufacturing Limited 12 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. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others. MAIN SITE BCD Semiconductor Manufacturing Limited - Wafer Fab Shanghai SIM-BCD Semiconductor Manufacturing Limited 800, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6485 1491, Fax: +86-21-5450 0008 BCD Semiconductor Manufacturing Limited - IC Design Group Advanced Analog Circuits (Shanghai) Corporation 8F, Zone B, 900, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6495 9539, Fax: +86-21-6485 9673 REGIONAL SALES OFFICE Shenzhen Office Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. 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