CYStech Electronics Corp. Spec. No. : C501P8 Issued Date : 2003.03.21 Revised Date : . . Page No. : 1/7 DC-to-DC Converter Control Circuit PL34063AP8 Description The PL34063AP8 is a monolithic control circuit containing the primary functions required for DC-to-DC converters. This device consists of an internal temperature compensated reference, comparator, control- led duty cycle oscillator with an active current limit circuit, driver and high current output switch. Features • 3V to 40V Input Voltage Operation • Internal 1.6A Peak Current Switch • Internal ±1.8% Reference • Low Quiescent Current at 1.6mA • Frequency Operation from 100Hz~100KHz • Current Limiting Applications • Saver for Cellular Phone • DC-DC Converter Module Typical Application Circuit Fig1.Saver Circuit for Cellular Phone L1 200µH Vout PL34063A RSC Vin 8 1 7 2 6 3 5 4 C1 100µF RA 5.6kΩ PL34063AP8 D1 CT 470ρF 1N5819 Cout 220µF RB 33kΩ CYStek Product Specification CYStech Electronics Corp. Spec. No. : C501P8 Issued Date : 2003.03.21 Revised Date : . . Page No. : 2/7 Pin Connections 8 7 6 5 1 2 3 4 Pin1:Switch Collector Pin2:Switch Emitter Pin3:Timing Capacitor Pin4:Gnd Pin5:Comparator Inverting Input Pin6:Vcc Pin7:Ipk Sense Pin8:Driver Collector Absolute Maxium Rating Supply Voltage ...................................................................................................................................... 40 V Comparator Input Voltage Range ............................................................................................. -0.3V ~ 40 V Switch Collector Voltage ....................................................................................................................... 40 V Switch Emitter Voltage .......................................................................................................................... 40 V Switch Collector to Emitter Voltage ...................................................................................................... 40 V Driver Collector Voltage ....................................................................................................................... 40 V Switch Current ...................................................................................................................................... 1.6 A Power Dissipation DIP Package Ta=25°C ........................................................................................... 1.0 W Thermal Resistance Junction To Air ............................................................................................ 125 °C / W Operating Junction Temperature ......................................................................................................... 125 °C Operating Ambient Temperature Range......................................................................................... 0 ~ 70 °C Storage Temperature Range ................................................................................................. -40 °C ~ 125 °C Electrical Characteristics (Vcc=5V,Ta=25°C, unless otherwise specified) Parameter Test Condition Symbol Min. Typ. Max. Unit Ichg Idischg VOSC IDischg/Ichg VIPK(Sence) 24 140 5.2 250 35 220 0.6 6.5 300 42 260 7.5 350 uA uA V mV VCE(Sat) - 1.0 1.3 V VCE(Sat) - 0.4 0.7 V hFE ICC(Off) 50 - 75 0.01 100 V UA Oscillator Charging Current Discharge Current Voltage Amplitude Discharge to Charge Current Ratio Current Limit Sense Voltage Output Switch Saturation Voltage, Darlington Connection Saturation Voltage DC Current Gain Collector Off-State Current Comparator Threshold Voltage Threshold Voltage Threshold Voltage Line Regulation Input Bias Current Supply Current PL34063AP8 5.0V≤VCC≤40V 5.0V≤VCC≤40V Pin3 VIPK(Sense) =VCC IChg=Idischg ISW=1.0A, VC(Driver)=VC(Switch) ISW=1.0A, IC(Driver)=50mA (Forced β ≈ 20) ISW=1.0A, VCE=5.0V VCE=30V 0°C≤Ta≤70°C 3.0V≤VCC≤40V VIN=0V VIPK(Sence)=VCC VPin5>VFB, 5.0V≤VCC≤40V CT=0.0001uF,Pin2=Gnd Remaining pins open VFB Regline IIB ICC 1.227 1.250 1.273 1.210 1.29 1.5 6 -20 -400 - 1.6 3 V mV nA mA CYStek Product Specification CYStech Electronics Corp. Spec. No. : C501P8 Issued Date : 2003.03.21 Revised Date : . . Page No. : 3/7 Block Diagram SC Pin1:1.6A Switch Collector DRI Pin8:Driver Collector Q2 Q S Q1 R 80Ω SE Pin2:Darlington Switch Emitter IPK CT Oscillator TC Pin3:Oscilletor Timing Capacitor 1.25V Reference Voltage Comparator + - GND Pin4:Power GND IPK Pin7:Highside Current Sense Input, VCC-VIPK=300mV VCC Pin6:Power Supply Input FB Pin5:Feedback Comparator Inverting Input Application Information Design Formula Table Calculation Step-Down Step-Up Voltage-Inverting ton / toff Vout+VF / Vin(min) -Vsat-VOut Vout+VF-Vin(min) / Vin(min)-Vsat |Vout| + VF / Vin-Vsat (ton + toff) max 1/Fmin 1/Fmin 1/Fmin CT 4*10 ton 4*10 ton 4*10-5ton IC(switch) 2*Iout(max) 2*Iout(max)(ton+toff/toff) 2*Iout(max)(ton+toff/toff) RS 0.3 / IC(switch) 0.3 / IC(switch) 0.3 / IC(switch) (Vin(min)-Vsat-Vout / IC(switch)) (Vin(min)-Vsat / IC(switch)) (Vin(min)-Vsat/ IC(switch)) *ton(max) *ton(max) *ton(max) IC(switch)*(ton+toff) / 8VRipple(P-P) Iout*ton / VRipple(P-P) Iout*ton / VRipple(P-P) L(min) CO -5 -5 Vsat : Saturation voltage of the output switch. VF : Forward voltage drop of the ringback rectifier. The following power supply characteristics must be chosen : Vin : Nominal input voltage. Vout : Desired output voltage. |Vout|=1.25*(1+RB/RA) Iout - Desired output current Fmin : Minimum desired output switching frequency at the selected values for Vin and Iout. VRipple(P-P) : Desired peak to peak output ripple voltage in practice, the calculated value will need to be increased due to the capacitor equivalent series resistance and board layout. The ripple voltage should be kept to a low value since it will directly effect the line and load regulation. PL34063AP8 CYStek Product Specification Spec. No. : C501P8 Issued Date : 2003.03.21 Revised Date : . . Page No. : 4/7 CYStech Electronics Corp. Application Information (Continued) Fig.2 Step-Up Converter D1 L1 200µH R1 150Ω PL34063A RSC 0 22Ω Vin C1 100µF 8 1 7 2 6 3 5 4 Vout 28V / 200mA 1N5819 Cout 220µF CT 680ρF RB 47kΩ RA 2.2kΩ Line Regulation : 100mV (Vin=8V~16V, @Io=200mA) Load Regulation : 5mV (Vin=12V, @Io=80mA~200mA) Fig.3 Step-Up Converter With External NPN Switch L1 R1 RSC Vin C1 Vout D1 PL34063A 8 1 7 2 6 3 5 4 Q1 CT Cout R2 RB RA Fig.4 Step-Down Converter L1 200µH PL34063A RSC 0.25Ω Vin C1 100µF 8 1 7 2 6 3 5 4 CT 470ρF D1 1N5819 Vout 5V / 500mA Cout 470µF RB 3.6kΩ RA 1.2kΩ Line Regulation : 40mV (Vin=10V~20V, @Io=500mA) Load Regulation : 5mV (Vin=15V, @Io=10mA~500mA) Short Circuit Current : 1.3A (Vin=15V, @RL=0.1Ω) PL34063AP8 CYStek Product Specification Spec. No. : C501P8 Issued Date : 2003.03.21 Revised Date : Page No. : 5/7 CYStech Electronics Corp. Application Information (Continued) Fig.5 Step-Down Converter With External PNP Saturation Switch PL34063A RSC Vin 8 1 7 2 6 3 5 4 R1 R2 Q1 L1 CT Vout D1 Cout RB C1 RA Fig.6 Voltage Inverting Converter PL34063A RSC 0.25Ω Vin 4.5V-6V 8 1 7 2 6 3 5 4 C1 100µF Vout -12V / 100mA D1 1N5819 L1 100µH Cout 470µF CT 680ρF RA 953Ω RB 8.2kΩ Line Regulation : 20mV (Vin=4.5V~6V, @Io=100mA) Load Regulation : 100mV (Vin=5V, @Io=10mA~100mA) Fig.7 Voltage Inverting Converter With External PNP Saturation Switch PL34063A RSC Vin 8 1 7 2 6 3 5 4 RA R1 R2 Q1 L1 D1 CT Vout C1 RB PL34063AP8 Cout CYStek Product Specification Spec. No. : C501P8 Issued Date : 2003.03.21 Revised Date : Page No. : 6/7 CYStech Electronics Corp. Characteristic Curves Emitter Follower Configuration Output Saturation Voltage vs Emitter Current Output Switch On-Off Time vs Oscillator Timing Capacitance 1.8 VCC=5.0V Pin 7=VCC Pin 5=GND TA=25℃ 100 Saturation Voltage---VCE(sat)(V) Output Switch On-Off Time---ton-off(us 1000 ton toff 10 1.6 1.5 VCC=5V Pins 1,7,8=VCC Pins 3,5=Gnd TA=25℃ (See Note ) 1.4 1.3 1.2 1.1 1 0.1 1 Oscillator Timing Capacitance---CT(nF) 0 10 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 Emitter Current---IE(A) Common Emitter Configuration Output Switch Saturation Voltage vs Collector Current 1.1 1 0.9 Darlington Connection 0.8 VCC=5V 0.7 Pin 7=VCC 0.6 Pins 2,3,5=Gnd TA=25℃ 0.5 (See Note) 0.4 Forced β=20 0.3 0.2 0.1 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 Current Limit Sense Voltage vs Temperature Current Limit Sense Voltage---VIPK(V) Saturation Voltage---V CE(sat)(V) 1 0.01 1.7 400 380 VCC=5.0V Ichg=Idischg 360 340 320 300 280 260 240 220 200 -75 -50 -25 0 25 50 75 100 125 Ambient Temperature---TA(℃) Collector Current---IC(A) Standby Supply Current vs Supply Voltage Note: Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible. 3.6 Supply Current---I CC(mA) 3.2 2.8 2.4 2 1.6 CT=10nF Pin 7=VCC Pin 2=Gnd 1.2 0.8 0.4 0 0 5 10 15 20 25 30 35 40 Supply Voltage---VCC(V) PL34063AP8 CYStek Product Specification CYStech Electronics Corp. Spec. No. : C501P8 Issued Date : 2003.03.21 Revised Date : Page No. : 7/7 DIP-8P Dimension Marking : 5 6 7 8 A 2 1 3 4 34063A B J F E C I α1 K G D H DIP-8P Plastic Package CYStek Package Code : P8 M L *:Typical Inches Min. Max. 0.2480 0.2520 0.3630 0.3670 *0.0600 *0.0500 *0.0390 0.1280 0.1320 0.1250 0.1400 DIM A B C D E F G Millimeters Min. Max. 6.29 6.40 9.22 9.32 *1.52 *1.27 *0.99 3.25 3.35 3.17 3.55 DIM H I J K L M α1 Inches Min. Max. 0.0150 0.0210 0.0898 0.1098 0.2950 0.3050 *0.1181 0.3370 0.7470 0.0090 0.0150 94° 97° Millimeters Min. Max. 0.38 0.53 2.28 2.79 7.49 7.74 *3.00 8.56 8.81 0.229 0.381 94° 97° Notes : 1.Controlling dimension : millimeters. 2.Maximum lead thickness includes lead finish thickness, and minimum lead thickness is the minimum thickness of base material. 3.If there is any question with packing specification or packing method, please contact your local CYStek sales office. Material : • Lead : 42 Alloy ; solder plating • Mold Compound : Epoxy resin family, flammability solid burning class:UL94V-0 Important Notice: • All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of CYStek. • CYStek reserves the right to make changes to its products without notice. • CYStek semiconductor products are not warranted to be suitable for use in Life-Support Applications, or systems. • CYStek assumes no liability for any consequence of customer product design, infringement of patents, or application assistance. PL34063AP8 CYStek Product Specification