MC33063A, MC34063A 1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS www.ti.com SLLS636J – DECEMBER 2004 – REVISED OCTOBER 2005 FEATURES • • • • • • • Wide Input Voltage Range…3 V to 40 V High Output Switch Current…Up to 1.5 A Adjustable Output Voltage Oscillator Frequency…Up to 100 kHz Precision Internal Reference…2% Short-Circuit Current Limiting Low Standby Current D (SOIC) OR P (PDIP) PACKAGE (TOP VIEW) Switch Collector Switch Emitter Timing Capacitor GND 1 8 2 7 3 6 4 5 Driver Collector Ipk VCC Comparator Inverting Input DRJ (QFN) PACKAGE (TOP VIEW) Switch Collector 1 † 8 Driver Collector Switch Emitter 2 7 Ipk Timing Capacitor 3 6 VCC GND 4 5 Comparator Inverting Input † Exposed thermal pad is connected internally to GND via die attach. DESCRIPTION/ORDERING INFORMATION The MC33063A and MC34063A are easy-to-use ICs containing all the primary circuitry needed for building simple dc-dc converters. These devices primarily consist of an internal temperature-compensated reference, a comparator, an oscillator, a PWM controller with active current limiting, a driver, and a high-current output switch. Thus, the devices require minimal external components to build converters in the boost, buck, and inverting topologies. The MC33063A is characterized for operation from –40°C to 85°C, while the MC34063A is characterized for operation from 0°C to 70°C. ORDERING INFORMATION PACKAGE (1) TA –40°C to 85°C MC33063AP MC33063AP QFN – DRJ Reel of 1000 MC33063ADRJR PREVIEW Tube of 75 MC33063AD Reel of 2500 MC33063ADR PDIP – P Tube of 50 MC34063AP MC34063AP QFN – DRJ Reel of 1000 MC34063ADRJR PREVIEW Tube of 75 MC34063AD Reel of 2500 MC34063ADR SOIC – D (1) TOP-SIDE MARKING Tube of 50 SOIC – D 0°C to 70°C ORDERABLE PART NUMBER PDIP – P M33063A M34063A Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2004–2005, Texas Instruments Incorporated MC33063A, MC34063A 1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS www.ti.com SLLS636J – DECEMBER 2004 – REVISED OCTOBER 2005 FUNCTIONAL BLOCK DIAGRAM Drive Collector 8 1 Switch Collector 2 Switch Emitter 3 Timing Capacitor Q2 S Q Q1 R 100 Ω Ipk Sense 7 Ipk Oscillator CT 6 VCC + − Comparator Inverting Input 1.25-V Reference Regulator 4 5 GND Absolute Maximum Ratings (1) over operating free-air temperature range (unless otherwise noted) MIN MAX UNIT VCC Supply voltage VIR Comparator Inverting Input voltage range VC(switch) Switch Collector voltage VE(switch) Switch Emitter voltage VCE(switch) Switch Collector to Switch Emitter voltage VC(driver) Driver Collector voltage 40 V IC(driver) Driver Collector current 100 mA ISW Switch current 1.5 A θJA Package thermal impedance (2) (3) –0.3 VPIN1 = 40 V D package Operating virtual junction temperature Tstg Storage temperature range (1) (2) (3) 2 V 40 V 40 V 40 V 40 V 97 DRJ package TBD P package TJ 40 °C/W 85 –65 150 °C 150 °C Stresses beyond 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-rated conditions for extended periods may affect device reliability. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability. The package thermal impedance is calculated in accordance with JESD 51-7. MC33063A, MC34063A 1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS www.ti.com SLLS636J – DECEMBER 2004 – REVISED OCTOBER 2005 Recommended Operating Conditions VCC MIN MAX Supply voltage TA Operating free-air temperature 3 40 MC33063A –40 85 MC34063A 0 70 UNIT V °C Electrical Characteristics VCC = 5 V, TA = full operating range (unless otherwise noted) (see block diagram) Oscillator PARAMETER TEST CONDITIONS TA MIN TYP MAX UNIT fosc Oscillator frequency VPIN5 = 0 V, CT = 1 nF 25°C 24 33 42 kHz Ichg Charge current VCC = 5 V to 40 V 25°C 24 35 42 µA Idischg Discharge current VCC = 5 V to 40 V 25°C 140 220 260 µA Idischg/Ichg Discharge-to-charge current ratio VPIN7 = VCC 25°C 5.2 6.5 7.5 VIpk Current-limit sense voltage Idischg = Ichg 25°C 250 300 350 mV TA MIN TYP MAX UNIT Output Switch (1) PARAMETER TEST CONDITIONS VCE(sat) Saturation voltage – Darlington connection ISW = 1 A, pins 1 and 8 connected Full range 1 1.3 V VCE(sat) Saturation voltage – non-Darlington connection (2) ISW = 1 A, RPIN8 = 82 Ω to VCC, forced β ∼ 20 Full range 0.45 0.7 V hFE DC current gain ISW = 1 A, VCE = 5 V IC(off) Collector off-state current VCE = 40 V 100 µA (1) (2) 25°C 50 Full range 75 0.01 Low duty-cycle pulse testing is used to maintain junction temperature as close to ambient temperature as possible. In the non-Darlington configuration, if the output switch is driven into hard saturation at low switch currents (≤300 mA) and high driver currents (≥30 mA), it may take up to 2 µs for the switch to come out of saturation. This condition effectively shortens the off time at frequencies ≥30 kHz, becoming magnified as temperature increases. The following output drive condition is recommended in the non-Darlington configuration: Forced β of output switch = IC,SW / (IC,driver – 7 mA) ≥ 10, where ∼7 mA is required by the 100-Ω resistor in the emitter of the driver to forward bias the Vbe of the switch. Comparator PARAMETER TEST CONDITIONS TA MIN TYP MAX 25°C 1.225 1.25 1.275 Full range 1.21 UNIT Vth Threshold voltage ∆Vth Threshold-voltage line regulation VCC = 5 V to 40 V Full range 1.4 5 mV IIB Input bias current VIN = 0 V Full range –20 –400 nA MIN MAX UNIT 1.29 V Total Device PARAMETER ICC Supply current TEST CONDITIONS VCC = 5 V to 40 V, CT = 1 nF, VPIN7 = VCC, VPIN5 > Vth, VPIN2 = GND, All other pins open TA Full range 4 mA 3 MC33063A, MC34063A 1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS www.ti.com SLLS636J – DECEMBER 2004 – REVISED OCTOBER 2005 TYPICAL CHARACTERISTICS 100 1.8 VCC = 5 V Pin 7 = VCC Pin 5 = GND TA = 25°C VCE(SAT), Output Switch Saturation Voltage (V) tON-OFF, Output Switch On-Off Time (µs) 1000 tON tOFF 10 1 0.01 1.6 1.5 1.4 1.3 1.2 1.1 1.0 1 0 0.0 0.1 1 CT, Oscillator Timing Capacitor (nF) 1.4 0.2 10 0.4 0.6 380 340 VIPK, Current Limit Sense Voltage (mV) 1.0 Force Beta = 20 0.8 0.6 0.0 0 0 0.0 VCC = 5 V Pin 7 = VCC Pin 2, 3, 5 = GND TA = 25°C 0.2 1 0.4 0.6 0.8 1.0 1.2 IC, Collector Current (A) 1.4 1.6 Figure 3. Output Switch Saturation Voltage vs Collector Current (Common-Emitter Configuration) 280 260 240 220 200 −50 −25 0 25 50 75 100 TA, Ambient Temperature (°C) ICC, Supply Current (mA) 2.4 2.0 1.6 CT = 1 nF Pin 7 = VCC Pin 2 = GND TA = 25°C 0.0 0 5 10 15 20 25 30 VCC, Supply Voltage (V) 35 40 Figure 5. Standby Supply Current vs Supply Voltage 4 125 Figure 4. Current-Limit Sense Voltage vs Temperature 2.8 0.4 1.6 300 3.2 0.8 1.4 320 3.6 1.2 1.2 VCC = 5 V ICHG = IDISCHG 360 1.2 0.2 1 1.0 Figure 2. Output Switch Saturation Voltage vs Emitter Current (Emitter-Follower Configuration) Darlington Connection 0.4 0.8 IE, Emitter Current (A) Figure 1. Output Switch On-Off Time vs Oscillator Timing Capacitor VCE(SAT), Output Switch Saturation Voltage (V) VCC = 5 V Pin 1, 7, 8 = VCC Pin 3, 5 = GND TA = 25°C 1.7 MC33063A, MC34063A 1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS www.ti.com SLLS636J – DECEMBER 2004 – REVISED OCTOBER 2005 TYPICAL CHARACTERISTICS (continued) 170 µH L 1 8 180 Ω S Q Q2 1N5819 Q1 R 2 7 Ipk RSC 0.22 Ω Vin 12 V 6 + 3 CT VCC + _ Comparator 100 µF 1.25-V Reference Regulator CT 1500 pF 4 5 1.0 µH R2 R1 2.2 kΩ 47 kΩ CO 330 µF + Vout 1.25 (1 R2) R1 Vout 28 V/175 mA 100 µF + Optional Filter Figure 6. Step-Up Converter TEST CONDITIONS RESULTS Line regulation VIN = 8 V to 16 V, IO = 175 mA 30 mV ± 0.05% Load regulation VIN = 12 V, IO = 75 mA to 175 mA 10 mV ± 0.017% Output ripple VIN = 12 V, IO = 175 mA 400 mVPP Efficiency VIN = 12 V, IO = 175 mA 87.7% Output ripple with optional filter VIN = 12 V, IO = 175 mA 40 mVPP 5 MC33063A, MC34063A 1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS www.ti.com SLLS636J – DECEMBER 2004 – REVISED OCTOBER 2005 R* 8 1 7 7 2 1 2 RSC RSC 6 Vin 8 Vout Vin 6 * R 0 for constant Vin a) EXTERNAL npn SWITCH A. b) EXTERNAL pnp SATURATED SWITCH (see Note A) If the output switch is driven into hard saturation (non-Darlington configuration) at low switch currents (≤300 mA) and high driver currents (≥30 mA), it may take up to 2 µs to come out of saturation. This condition will shorten the off time at frequencies ≥30 kHz and is magnified at high temperatures. This condition does not occur with a Darlington configuration because the output switch cannot saturate. If a non-Darlington configuration is used, the output drive configuration in Figure 7b is recommended. Figure 7. External Current-Boost Connections for IC Peak Greater Than 1.5 A 6 Vout MC33063A, MC34063A 1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS www.ti.com SLLS636J – DECEMBER 2004 – REVISED OCTOBER 2005 1 8 S Q Q2 Q1 R 2 7 Oscillator Vin 25 V 6 + 1N5819 Ipk RSC 0.33 Ω CT 3 VCC + _ Comparator 100 µF L 220 µH CT 470 pF 1.25-V Reference Regulator 4 5 1.0 µH R2 Vout 5 V/500 mA 3.8 kΩ R1 1.2 kΩ CO 470 µF + Vout 1.25 (1 R2) R1 + 100 µF Optional Filter Figure 8. Step-Down Converter TEST CONDITIONS RESULTS Line regulation VIN = 15 V to 25 V, IO = 500 mA 12 mV ± 0.12% Load regulation VIN = 25 V, IO = 50 mA to 500 mA 3 mV ± 0.03% Output ripple VIN = 25 V, IO = 500 mA 120 mVPP Short-circuit current VIN = 25 V, RL = 0.1 Ω 1.1 A Efficiency VIN = 25 V, IO = 500 mA 83.7% Output ripple with optional filter VIN = 25 V, IO = 500 mA 40 mVPP 8 1 1 8 7 Vout RSC Vin 7 2 Vout 2 RSC 6 Vin a) EXTERNAL npn SWITCH 6 b) EXTERNAL pnp SATURATED SWITCH Figure 9. External Current-Boost Connections for IC Peak Greater Than 1.5 A 7 MC33063A, MC34063A 1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS www.ti.com SLLS636J – DECEMBER 2004 – REVISED OCTOBER 2005 1 8 S Q Q2 Q1 R 2 7 Oscillator 6 Vin 4.5 V to 6.0 V + L 88 µH Ipk RSC 0.24 Ω CT 3 VCC + _ Comparator 100 µF 1.25-V Reference Regulator 1N5819 + 1500 pF 4 5 1.0 µH R1 R2 8.2 kΩ Vout −12 V/100 mA 953 Ω CO 1000 µF Vout 1.25 (1 R2) R1 100 µF + + Optional Filter Figure 10. Voltage-Inverting Converter TEST CONDITIONS RESULTS Line regulation VIN = 4.5 V to 6 V, IO = 100 mA 3 mV ± 0.12% Load regulation VIN = 5 V, IO = 10 mA to 100 mA 0.022 V ± 0.09% Output ripple VIN = 5 V, IO = 100 mA 500 mVPP Short-circuit current VIN = 5 V, RL = 0.1 Ω 910 mA Efficiency VIN = 5 V, IO = 100 mA 62.2% Output ripple with optional filter VIN = 5 V, IO = 100 mA 70 mVPP 8 1 1 8 7 2 7 Vout 2 Vout Vin 6 Vin a) EXTERNAL npn SWITCH 6 b) EXTERNAL pnp SATURATED SWITCH Figure 11. External Current-Boost Connections for IC Peak Greater Than 1.5 A 8 MC33063A, MC34063A 1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS www.ti.com SLLS636J – DECEMBER 2004 – REVISED OCTOBER 2005 APPLICATION INFORMATION CALCULATION ton/toff STEP UP STEP DOWN VOLTAGE INVERTING Vout VF Vin(min) Vin(min) Vsat Vout VF Vin(min) Vsat Vout Vout VF Vin Vsat 1 f 1 f 1 f ton toff ton toff ton toff (ton + toff) t on t off toff ton ton Vout ton ton t on 1 t off 9 105 ton t on(max) 4 105 ton ton 2Iout(max) 2Iout(max) I outton Vripple(pp) 1.25(1 R2) R1 See Figure 6 Ipk(switch)t on t off 8Vripple(pp) 1.25(1 R2) R1 See Figure 8 t on 1 t off 0.3 Ipk(switch) Vin(min) Vsat Vout Ipk(switch) 1 toff toff 0.3 Ipk(switch) Vin(min) Vsat Ipk(switch) t on t off 1 toff toff 4 0.3 Ipk(switch) RSC CO 105 2Iout(max) Ipk(switch) L(min) 1 toff toff 4 CT t on t off t on(max) Vin(min) Vsat Ipk(switch) 9 t on(max) I outton Vripple(pp) 1.25(1 R2) R1 See Figure 10 Vsat = Saturation voltage of the output switch VF = Forward voltage drop of the chosen output rectifier The following power-supply parameters are set by the user: Vin = Nominal input voltage Vout = Desired output voltage Iout = Desired output current fmin = Minimum desired output switching frequency at the selected values of Vin and Iout Vripple = Desired peak-to-peak output ripple voltage. The ripple voltage directly affects the line and load regulation and, thus, must be considered. In practice, the actual capacitor value should be larger than the calculated value, to account for the capacitor's equivalent series resistance and board layout. 9 MC33063A, MC34063A 1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS SLLS636J – DECEMBER 2004 – REVISED OCTOBER 2005 THERMAL PAD MECHANICAL DATA DRJ (S-PDSO-N8) 10 www.ti.com PACKAGE OPTION ADDENDUM www.ti.com 12-Mar-2007 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty MC33063AD ACTIVE SOIC D 8 75 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM MC33063ADE4 ACTIVE SOIC D 8 75 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM MC33063ADR ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM MC33063ADRE4 ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM MC33063ADRJR ACTIVE SON DRJ 8 1000 Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HR MC33063AP ACTIVE PDIP P 8 50 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type MC33063APE4 ACTIVE PDIP P 8 50 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type MC34063AD ACTIVE SOIC D 8 75 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM MC34063ADE4 ACTIVE SOIC D 8 75 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM MC34063ADR ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM MC34063ADRE4 ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM MC34063ADRJR ACTIVE SON DRJ 8 1000 Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HR MC34063AP ACTIVE PDIP P 8 50 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type MC34063APE4 ACTIVE PDIP P 8 50 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type Lead/Ball Finish MSL Peak Temp (3) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is Addendum-Page 1 PACKAGE OPTION ADDENDUM www.ti.com 12-Mar-2007 provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 2 MECHANICAL DATA MPDI001A – JANUARY 1995 – REVISED JUNE 1999 P (R-PDIP-T8) PLASTIC DUAL-IN-LINE 0.400 (10,60) 0.355 (9,02) 8 5 0.260 (6,60) 0.240 (6,10) 1 4 0.070 (1,78) MAX 0.325 (8,26) 0.300 (7,62) 0.020 (0,51) MIN 0.015 (0,38) Gage Plane 0.200 (5,08) MAX Seating Plane 0.010 (0,25) NOM 0.125 (3,18) MIN 0.100 (2,54) 0.021 (0,53) 0.015 (0,38) 0.430 (10,92) MAX 0.010 (0,25) M 4040082/D 05/98 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. Falls within JEDEC MS-001 For the latest package information, go to http://www.ti.com/sc/docs/package/pkg_info.htm POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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