Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C General Description Features 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. • • • • • • 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 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. Applications · · · · The AZ34063C 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 AZ34063C BCD Semiconductor Manufacturing Limited Sep. 2006 Rev. 1. 3 1 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C Pin Configuration P/M Package (DIP-8/SOIC-8) Switch Collector Switch Emitter Timing Capacitor GND 1 8 Driver Collector 2 7 IPK Sense 3 6 VCC 4 5 Comparator Inverting Input Top View Figure 2. Pin Configuration of AZ34063C Functional Block Diagram Driver Collector 8 B S A 1 Switch Collector 2 Switch Emitter 3 Timing Capacitor 4 GND Q R IPK Sense 7 Ipk IPK CT OSC VCC 6 1.25V Reference Regulator + - Comparator Inverting Input 5 Figure 3. Functional Block Diagram of AZ34063C BCD Semiconductor Manufacturing Limited Sep. 2006 Rev. 1. 3 2 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C 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 AZ34063C - Circuit Type E1: Lead Free Blank: Tin Lead 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 Tin Lead AZ34063CM Marking ID Lead Free AZ34063CM-E1 Tin Lead 34063CM Lead Free Packing Type 34063CM-E1 Tube Tape & Reel AZ34063CMTR AZ34063CMTR-E1 34063CM 34063CM-E1 AZ34063CP AZ34063CP-E1 AZ34063CP AZ34063CP-E1 Tube BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. BCD Semiconductor Manufacturing Limited Sep. 2006 Rev. 1. 3 3 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C 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 0.8 A 1.25 W 780 mW Switch Current Power Dissipation (TA=25 ℃ ) Thermal Resistance DIP-8 PD SOIC-8 DIP-8 100 RθJA SOIC-8 Operating Junction Temperature Lead Temperature (Soldering, 10s) Storage Temperature Range 160 ℃ /W TJ 150 ℃ TLEAD 260 ℃ TSTG -65 to 150 ℃ 2000 V ESD (Human body model) 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 C BCD Semiconductor Manufacturing Limited Sep. 2006 Rev. 1. 3 4 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C Electrical Characteristics (VCC=5.0 V, 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 mV IDISCHG/ICHG Pin 7 to VCC, TA=25oC Current Limit Sense Voltage VIPK(sense) ICHG=IDISCHG, TA=25oC OUTPUT SWITCH (Note 3) Saturation Voltage, Dalington Connection VCE(sat) ISW=0.8A, Pins 1, 8 connected, Common Emitter 1.0 1.3 V Saturation Voltage (Note 4) VCE(sat) ISW=0.8 A, RPIN8=82 Ω to VCC, Forced β=20, Common Emitter 0.45 0.8 V hFE ISW=0.8A, VCE=5.0V, TA=25oC 100 µA 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 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 2.0us 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: BCD Semiconductor Manufacturing Limited Sep. 2006 Rev. 1. 3 5 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C 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. 1000 VCC=5.0V VPIN7=VCC VPIN5=GND Vosc. Oscillator Voltage (V) 200mV/DIV Ton-off. Output Switch On-Off Time (µs) Typical Performance Characteristics O TA=25 C ton 100 toff 10 VCC=5.0V VPIN7=VCC VPIN2=GND 1 0.1 1 10 100 Pin 1,5,8=open CT=1.0nF TA=25oC CT, Oscillator Timing Capacitor (nF) Time. 10µs/DIV Figure 4. Output Switch On-Off Time vs. Figure 5. Timing Capacitor Waveform Oscillator Timing Capacitor 3.5 VCC=5.0V VPIN7=VCC VPIN5=GND 3.0 ICC. Supply Current (mA) 100 Frequency (KHz) O TA=25 C 10 2.5 2.0 CT=1.0nF VPIN7=VCC VPIN2=GND 1.5 1.0 1 0.5 0.1 1 10 0 100 CT, Oscillator Timing Capacitor (nF) 5 10 15 20 25 30 35 40 VCC. Supply Voltage (V) Figure 7. Standby Supply Current vs. Supply Voltage Figure 6. Oscillator Frequency vs.Timing Capacitor BCD Semiconductor Manufacturing Limited Sep. 2006 Rev. 1. 3 6 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C Typical Performance Characteristics (Continued) 1.2 1.65 1.1 1.0 1.60 Darlington Connection Saturation Voltage (V) Saturation Voltage (V) 0.9 1.55 1.50 1.45 VCC=5.0V VPIN1,7,8=VCC VPIN3,5=GND 1.40 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.6 0.5 Forced β=20 0.4 0.3 VCC=5.0V VPIN7=VCC VPIN2,3,5=GND 0.1 O 0.1 0.7 0.2 TA=25 C 1.35 0.0 0.8 O TA=25 C 0.0 1.0 -0.1 0.0 1.1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Collector Current (A) Emitter 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 Current Limit Sense Voltage (mV) 300 295 290 285 280 275 270 265 260 255 250 -60 -40 -20 0 20 40 60 80 100 120 140 O Temperature ( C) Figure 10. Current Limit Sense Voltage vs. Temperature BCD Semiconductor Manufacturing Limited Sep. 2006 Rev. 1. 3 7 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C 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 AZ34063C VOUT R2 2.2k R1 47k + VOUT 28V/175mA C2 330 µF + Optional Filter C3 100 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). BCD Semiconductor Manufacturing Limited Sep. 2006 Rev. 1. 3 8 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C Typical Applications (Continued) 8 1 B S Q A R 7 Ipk IPK Rsc 0.33 VIN 25V 2 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 AZ34063C VOUT VOUT R1 3.6k + R2 1.2k 5V/500mA C2 470 µF + Optional Filter 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). BCD Semiconductor Manufacturing Limited Sep. 2006 Rev. 1. 3 9 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C Typical Applications (Continued) 8 1 B S A Q 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 AZ34063C L2 1.0 µH VOUT VOUT -12V/100mA C2 1000 µF Optional Filter + R1 953 R2 8.2k C3 100 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). BCD Semiconductor Manufacturing Limited Sep. 2006 Rev. 1. 3 10 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C 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 φ 0.800(0.031) 0.300(0.012) R0.150(0.006) 0.100(0.004) 0.200(0.008) 0° 8° 1.000(0.039) 3.800(0.150) 4.000(0.157) 0.330(0.013) 0.190(0.007) 0.250(0.010) 1° 5° 0.510(0.020) 0.900(0.035) R0.150(0.006) 0.450(0.017) 0.800(0.031) BCD Semiconductor Manufacturing Limited Sep. 2006 Rev. 1. 3 11 Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C Mechanical Dimensions (Continued) DIP-8 Unit: mm(inch) 0.700(0.028) 7.620(0.300)TYP 1.524(0.060) TYP 6° 5° 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 2.540(0.100) TYP 0.360(0.014) 0.560(0.022) 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) BCD Semiconductor Manufacturing Limited Sep. 2006 Rev. 1. 3 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 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 - 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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