PL34063AP8

CYStech Electronics Corp. DC-to-DC Converter Control Circuit Spec. No. : C501P8 Issued Date : 2003.03.21 Revised Date : .. Page No. : 1/7 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 PL34063A RSC Vin C1 100µF RA 5.6kΩ 8 7 6 5 1 2 3 4 Vout D1 CT 470ρF 1N5819 Cout 220µF RB 33kΩ PL34063AP8 CYStek Product Specification CYStech Electronics Corp. Pin Connections 8 7 6 5 Spec. No. : C501P8 Issued Date : 2003.03.21 Revised Date : .. Page No. : 2/7 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 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 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 Ichg Idischg VOSC IDischg/Ichg VIPK(Sence) VCE(Sat) VCE(Sat) hFE ICC(Off) VFB Regline IIB ICC 24 140 5.2 250 50 35 220 0.6 6.5 300 1.0 0.4 75 0.01 42 260 7.5 350 1.3 0.7 100 uA uA V mV V V V UA V mV nA mA Test Condition Symbol Min. Typ. Max. Unit 1.227 1.250 1.273 1.210 1.29 1.5 6 -20 -400 1.6 3 PL34063AP8 CYStek Product Specification CYStech Electronics Corp. Block Diagram Spec. No. : C501P8 Issued Date : 2003.03.21 Revised Date : .. Page No. : 3/7 SC Pin1:1.6A Switch Collector Q1 Q2 DRI Pin8:Driver Collector QS R 80Ω IPK Pin7:Highside Current Sense Input, VCC-VIPK=300mV VCC Pin6:Power Supply Input SE Pin2:Darlington Switch Emitter TC Pin3:Oscilletor Timing Capacitor CT IPK Oscillator 1.25V Reference Voltage Comparator + - GND Pin4:Power GND FB Pin5:Feedback Comparator Inverting Input Application Information Design Formula Table Calculation ton / toff (ton + toff) max CT IC(switch) RS L(min) CO Step-Down Vout+VF / Vin(min) -Vsat-VOut 1/Fmin 4*10 ton 2*Iout(max) 0.3 / IC(switch) -5 Step-Up Vout+VF-Vin(min) / Vin(min)-Vsat 1/Fmin 4*10 ton 2*Iout(max)(ton+toff/toff) 0.3 / IC(switch) -5 Voltage-Inverting |Vout| + VF / Vin-Vsat 1/Fmin 4*10-5ton 2*Iout(max)(ton+toff/toff) 0.3 / IC(switch) (Vin(min)-Vsat-Vout / IC(switch)) *ton(max) IC(switch)*(ton+toff) / 8VRipple(P-P) (Vin(min)-Vsat / IC(switch)) *ton(max) (Vin(min)-Vsat/ IC(switch)) *ton(max) Iout*ton / VRipple(P-P) Iout*ton / VRipple(P-P) 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 CYStech Electronics Corp. Application Information (Continued) Fig.2 Step-Up Converter L1 R1 150Ω RSC 0 22Ω Vin C1 100µF 200µH D1 1N5819 Spec. No. : C501P8 Issued Date : 2003.03.21 Revised Date : .. Page No. : 4/7 Vout 28V / 200mA Cout 220µF PL34063A 8 7 6 5 1 2 3 4 CT 680ρF RB RA 2.2kΩ 47kΩ 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 Cout PL34063A 8 7 6 5 1 2 3 4 Q1 CT R2 RB RA Fig.4 Step-Down Converter L1 PL34063A RSC 0.25Ω Vin C1 100µF 8 7 6 5 1 2 3 4 200µH Vout 5V / 500mA Cout 470µF CT 470ρF D1 1N5819 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) CYStek Product Specification PL34063AP8 CYStech Electronics Corp. Application Information (Continued) Fig.5 Step-Down Converter With External PNP Saturation Switch Spec. No. : C501P8 Issued Date : 2003.03.21 Revised Date : Page No. : 5/7 PL34063A 8 1 2 3 4 R2 R1 Q1 L1 Vout Cout RSC Vin 7 6 5 CT D1 C1 RA RB Fig.6 Voltage Inverting Converter PL34063A RSC 0.25Ω Vin 4.5V-6V C1 100µF RB 8.2kΩ 8 7 6 5 1 2 3 4 D1 1N5819 L1 100µH CT 680ρF Vout -12V / 100mA Cout 470µF RA 953Ω 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 8 1 2 3 4 R1 R2 Q1 RSC Vin 7 6 5 L1 CT D1 RA C1 RB Vout Cout PL34063AP8 CYStek Product Specification CYStech Electronics Corp. Characteristic Curves Output Switch On-Off Time vs Oscillator Timing Capacitance 1000 Output Switch On-Off Time---ton-off(us Saturation Voltage---VCE(sat)(V) VCC=5.0V Pin 7=VCC Pin 5=GND TA=25℃ ton 10 toff 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1 0.1 1 Oscillator Timing Capacitance---CT(nF) 10 0 0.2 0.4 0.6 0.8 Spec. No. : C501P8 Issued Date : 2003.03.21 Revised Date : Page No. : 6/7 Emitter Follower Configuration Output Saturation Voltage vs Emitter Current 100 VCC=5V Pins 1,7,8=VCC Pins 3,5=Gnd TA=25℃ (See Note ) 1 0.01 1 1.2 1.4 1.6 Emitter Current---IE(A) C ommon 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 Collector Current---IC(A) Current Limit Sense Voltage vs Temperature Current Limit Sense Voltage---VIPK(V) 400 380 360 340 320 300 280 260 240 220 200 -75 -50 -25 0 25 50 75 100 125 VCC=5.0V Ichg=Idischg Saturation Voltage---V CE(sat)(V) Ambient Temperature---TA(℃) Standby Supply Current vs Supply Voltage 3.6 3.2 CC(mA) 2.8 2.4 2 1.6 1.2 0.8 0.4 0 0 5 10 15 20 25 30 35 40 Note: Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible. Supply Current---I CT=10nF Pin 7=VCC Pin 2=Gnd Supply Voltage---VCC(V) PL34063AP8 CYStek Product Specification CYStech Electronics Corp. DIP-8P Dimension Marking : 8 7 6 5 A 1 2 B 3 4 J F Spec. No. : C501P8 Issued Date : 2003.03.21 Revised Date : Page No. : 7/7 34063A C E DH G M α1 K DIP-8P Plastic Package CYStek Package Code : P8 I L *:Typical DIM A B C D E F G 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 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