AZ34063AM-E1

Preliminary Datasheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER General Description The AZ34063A is a monolithic switching regulator control circuit containing 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. This device was specifically designed to be used in Step-Down, Step-Up and Voltage-Inverting applications with a minimum number of external components. The AZ34063A is available in 2 packages: SOIC-8 and DIP-8. AZ34063A Features • • • • • • • 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 Battery Chargers NICs/ Switches/ Hubs ADSL Modems Negative Voltage Power Supplies SOIC-8 DIP-8 Figure 1. Package Types of AZ34063A Apr. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 1 Preliminary Datasheet 1.5A 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 AZ34063A Top View Figure 2. Pin Configuration of AZ34063A Functional Block Diagram Driver Collector 1 Switch Collector IPK Sense Switch Emitter VCC Timing Capacitor Comparator Inverting Input GND Figure 3. Functional Block Diagram of AZ34063A Apr. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 2 Preliminary Datasheet 1.5A 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 I sense resistor to limit the peak current through the switch Voltage driver collector AZ34063A Ordering Information AZ34063A 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 AZ34063AM AZ34063AMTR AZ34063AP Lead Free AZ34063AM-E1 AZ34063AMTR-E1 AZ34063AP-E1 Marking ID Tin Lead 34063AM 34063AM AZ34063AP Lead Free 34063AM-E1 34063AM-E1 AZ34063AP-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. Apr. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 3 Preliminary Datasheet 1.5A 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 (Vpin1=40V) Switch Collector to Emitter Voltage Driver Collector Voltage Driver Collector Current (Note 2) Switch Current Power Dissipation and Thermal Characteristics Plastic Package, ) Power Dissipation (TA = 25 Thermal Resistance SOIC Package, ) Power Dissipation (TA = 25 Thermal Resistance Operating Junction Temperature Storage Temperature Range ESD (Human body model) Symbol VCC VIR VC(switch) VE(switch) VCE(switch) VC(driver) IC(driver) ISW Value 40 -0.3 to 40 40 40 40 40 100 1.5 Unit V V V V V V mA A AZ34063A PD RJ PD R JA TJ TSTG 1.25 100 625 160 150 -65 to 150 2000 W /W mW /W 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 VCC TA Min 3 -40 Max 36 85 Unit V o C Apr. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 4 Preliminary Datasheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Electrical Characteristics (VCC = 5.0 V, TA = -40 to 85oC, unless otherwise specified.) AZ34063A Parameter OSCILLATOR Frequency Charge Current Discharge Current Symbol fOSC ICHG IDISCHG Conditions VPin 5 = 0 V, CT = 1.0 nF TA = 25oC VCC = 5.0 V to 36 V, TA = 25oC VCC = 5.0 V to 36 V, TA = 25 C o Min 30 30 180 5.2 250 Typ 38 38 240 6.5 300 1.0 Max 45 45 290 7.5 350 1.3 0.7 Unit KHz A A Discharge to Charge Current IDISCHG/ICHG Pin 7 to V , T = 25oC CC A 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 Regulation Voltage Line VTH REGLINE IIB ICC TA = 25oC TA = -40 to 85oC VCC = 3.0 V to 36 V VIN = 0 V VCC = 5.0 V to 36 V, CT = 1.0 nF, Pin 7 = VCC, VPin 5 > VTH, VCE(sat) VCE(sat) hFE IC(off) ISW = 1.0 A, Pins 1, 8 connected ISW = 1.0 A, RPin 8 = 82 VCC, Forced = 20 ISW = 1.0 A, VCE = 5.0 V, TA = VCE = 36 V 25 o C to VIPK(sense) ICHG = IDISCHG, TA = 25oC mV V V 0.45 50 75 0.01 1.225 1.21 1.250 1.4 -20 100 1.275 1.29 5 -400 4 A V mV nA mA Input Bias Current 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: Apr. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 5 Preliminary Datasheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Electrical Characteristics (Continued) Forced of output switch: AZ34063A IC output 10 ICdriver - 7.0mA* * The 100 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 ( s) 1000 100 toff 10 Vosc. Oscillator Voltage (V) 200mV/DIV VCC=5.0V Pin 7=VCC Pin 5=GND O TA=25 C ton 1 0.1 1 10 100 VCC=5.0V Pin 7=VCC Pin 2=GND Pin 1,5,8 = open CT=1.0nF TA=25oC Time. 10 s/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 Icc. Supply Current (mA) Frequency (KHz) VCC=5.0V Pin 7=VCC Pin 5=GND O TA=25 C 3.0 2.5 10 2.0 1.5 CT=1.0nF Pin 7=VCC Pin 2=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. Standard Supply Current vs. Supply Voltage Apr. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 6 Preliminary Datasheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Typical Performance Characteristics (Continued) AZ34063A 1.4 1.6 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.0 0.2 0.4 0.6 0.8 1.0 Saturation Voltage (V) 1.5 1.4 Saturation Voltage (V) Darlington Connection Forced =20 1.3 1.2 VCC=5.0V Pin 1,7,8=VCC Pin 3,5=GND O TA=25 C Emitter current (A) VCC=5.0V Pin 7=VCC Pin 2,3,5=GND O TA=25 C 1.2 1.4 1.6 -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 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) 290 280 270 260 250 240 -60 -40 -20 0 20 40 60 O 80 100 120 140 Temperature ( C) Figure 10. Current Limit Sense Voltage vs. Temperature Apr. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 7 Preliminary Datasheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Typical Applications AZ34063A L1 150 H R3 180 8 B A S R Q 1 7 Rsc 0.22 Ipk IPK OSC CT 2 D1 1N5819 Vin 12V + 6 C1 100 F 1.25V Reference Regulator 3 CT 1500 pF + - 5 4 L2 1.0 U1 AZ34063A Vout 28V/175mA R1 47k Vout + Optional Filter R2 2.2k + C2 330 F C3 100 F 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). Apr. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 8 Preliminary Datasheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Typical Applications (Continued) AZ34063A 8 B A SQ R 1 7 Rsc 0.33 Ipk IPK OSC CT 2 D1 1N5819 L1 220 H Vin 25V + 6 C1 100 F 1.25V Reference Regulator 3 CT 470 pF + - 5 4 U1 AZ34063A L2 1.0 H Vout + Optional Filter R1 3.6k R2 1.2k Vout 5V/500mA + C2 470 F C3 100 F 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). Apr. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 9 Preliminary Datasheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Typical Applications (Continued) AZ34063A 8 B A SQ R 1 7 Rsc 0.24 Ipk IPK OSC CT 2 L1 88 Vin 4.5-6V + 6 C1 100 F 1.25V Reference Regulator 3 CT 1500pF + - D1 1N5819 5 4 U1 AZ34063A L2 1.0 R1 953 + R2 8.2k Vout -12V/100mA Optional Filter + C2 1000 F Vout C3 100 F 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). Apr. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 10 Preliminary Datasheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Mechanical Dimensions SOIC-8 Unit: mm(inch) AZ34063A 4.800(0.189) 5.000(0.197) 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) 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) 0.900(0.035) 1 5 R0.150(0.006) 0.190(0.007) 0.250(0.010) Apr. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 11 Preliminary Datasheet 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Mechanical Dimensions (continued) DIP-8 Unit: mm(inch) AZ34063A 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) 6.200(0.244) 6.600(0.260) 3.000(0.118) Depth 0.100(0.004) 0.200(0.008) 9.000(0.354) 9.400(0.370) Apr. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 12 http://www.bcdsemi.com BCD Semiconductor Corporation 3170 De La Cruz Blvd, Suite # 105 Santa Clara, CA 95054-2411, U.S.A Tel: +1-408-988 6388, Fax: +1-408-988 6386 Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. 800 Yi Shan Road, Shanghai 200233, PRC Tel: +86-21-6485-1491, Fax: +86-21-5450-0008 Advanced Analog Circuits (Shanghai) Corporation 8F, B Zone, 900 Yi Shan Road, Shanghai 200233, PRC Tel: +86-21-6495 9539, Fax: +86-21-6485 9673 BCD Semiconductor (Taiwan) Company Limited Room 2210, 22nd Fl, 333, Keelung Road, Sec. 1, TaiPei (110), Taiwan Tel: +886-2-2758 6828, Fax: +886-2-2758 6892 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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