MC34063A, MC33063A, NCV33063A. 1.5 A, Step Up/Down/ Inverting Switching Regulators

Transcription

1 MC0A, MC0A, NCV0A. A, StepUp/Down/ Inverting Switching Regulators The MC0A Series is a monolithic control circuit containing the primary functions required for DCtoDC converters. These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This series was specifically designed to be incorporated in StepDown and StepUp and VoltageInverting applications with a minimum number of external components. Refer to Application Notes AN90A/D and AN9/D for additional design information. Features Operation from.0 V to 0 V Input Low Standby Current Current Limiting Output Switch Current to. A Output Voltage Adjustable Frequency Operation to 00 khz Precision % Reference PbFree Packages are Available SOIC D SUFFIX CASE PDIP P, P SUFFIX CASE MARKING DIAGRAMS x0 ALYWA x0ap AWL YYWWG 0AVP AWL YYWWG Drive Collector I pk Sense V CC Comparator Inverting Input I pk Oscillator S Q R C T Comparator 00 (Bottom View) Figure. Representative Schematic Diagram Q. V Reference Regulator Q This device contains active transistors. Switch Collector Switch Emitter Timing Capacitor GND x = or A = Assembly Location L, WL = Wafer Lot Y, YY = Year W, WW = Work Week G or = PbFree Package Switch Collector Switch Emitter Timing Capacitor GND PIN CONNECTIONS (Top View) Driver Collector I pk Sense V CC Comparator Inverting Input ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page of this data sheet. Semiconductor Components Industries, LLC, 00 February, 00 Rev. 9 Publication Order Number: MC0A/D

2 MAXIMUM RATINGS Rating Symbol Value Unit Power Supply Voltage V CC 0 Vdc Comparator Input Voltage Range V IR 0. to 0 Vdc Switch Collector Voltage V C(switch) 0 Vdc Switch Emitter Voltage (V Pin = 0 V) V E(switch) 0 Vdc Switch Collector to Emitter Voltage V CE(switch) 0 Vdc Driver Collector Voltage V C(driver) 0 Vdc Driver Collector Current (Note ) I C(driver) 00 ma Switch Current I SW. A Power Dissipation and Thermal Characteristics Plastic Package, P, P Suffix T A = C P D. W Thermal Resistance R JA 00 C/W SOIC Package, D Suffix T A = C P D mw Thermal Resistance R JA 0 C/W Operating Junction Temperature T J 0 C Operating Ambient Temperature Range T A C MC0A 0 to 0 MC0AV, NCV0A 0 to MC0A 0 to Storage Temperature Range T stg to 0 C Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.. Maximum package power dissipation limits must be observed.. This device series contains ESD protection and exceeds the following tests: Human Body Model 000 V per MILSTD, Method 0. Machine Model Method 00 V.. NCV prefix is for automotive and other applications requiring site and change control.

3 ELECTRICAL CHARACTERISTICS (V CC =.0 V, T A = T low to T high [Note ], unless otherwise specified.) Characteristics Symbol Min Typ Max Unit OSCILLATOR Frequency (V Pin = 0 V, C T =.0 nf, T A = C) f osc khz Charge Current (V CC =.0 V to 0 V, T A = C) I chg A Discharge Current (V CC =.0 V to 0 V, T A = C) I dischg A Discharge to Charge Current Ratio (Pin to V CC, T A = C) I dischg /I chg... Current Limit Sense Voltage (I chg = I dischg, T A = C) V ipk(sense) mv OUTPUT SWITCH (Note ) Saturation Voltage, Darlington Connection (I SW =.0 A, Pins, connected) Saturation Voltage (Note ) (I SW =.0 A, R Pin = to V CC, Forced 0) V CE(sat).0. V V CE(sat) V DC Current Gain (I SW =.0 A, V CE =.0 V, T A = C) h FE 0 Collector OffState Current (V CE = 0 V) I C(off) A COMPARATOR Threshold Voltage T A = C T A = T low to T high Threshold Voltage Line Regulation (V CC =.0 V to 0 V) MC0A, MC0A MC0AV, NCV0A V th.. Reg line Input Bias Current ( = 0 V) I IB 0 00 na TOTAL DEVICE Supply Current (V CC =.0 V to 0 V, C T =.0 nf, Pin = V CC, V Pin > V th, Pin = GND, remaining pins open) V mv I CC.0 ma. T low = 0 C for MC0A, 0 C for MC0A, AV, NCV0A T high = 0 C for MC0A, C for MC0A, C for MC0AV, NCV0A. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.. If the output switch is driven into hard saturation (nondarlington configuration) at low switch currents ( 00 ma) and high driver currents ( 0 ma), it may take up to.0 s for it to come out of saturation. This condition will shorten the off time at frequencies 0 khz, and is magnified at high temperatures. This condition does not occur with a Darlington configuration, since the output switch cannot saturate. If a nondarlington configuration is used, the following output drive condition is recommended: IC output Forced of output switch : 0 I C driver.0 ma * * The 00 resistor in the emitter of the driver device requires about.0 ma before the output switch conducts.

4 , OUTPUT SWITCH ON-OFF TIME ( s) t onoff μ I V CC =.0 V Pin = V CC Pin = GND T A = C C T, OSCILLATOR TIMING CAPACITOR (nf) t on, OSCILLATOR VOLTAGE (V) OSC V V CC =.0 V Pin = V CC Pin = GND Pins,, = Open C T =.0 nf T A = C 0 s/div 00 mv/div Figure. Output Switch OnOff Time versus Oscillator Timing Capacitor Figure. Timing Capacitor Waveform, SATURATION VOLTAGE (V) CE(sat) V V CC =.0 V. Pins,, = V CC Pins, = GND. T A = C (See Note ) I E, EMITTER CURRENT (A) CE(sat), SATURATION VOLTAGE (V) V V CC =.0 V Pin = V CC Pins,, = GND T A = C (See Note ) Darlington Connection Forced = I C, COLLECTOR CURRENT(A) Figure. Emitter Follower Configuration Output Saturation Voltage versus Emitter Current Figure. Common Emitter Configuration Output Switch Saturation Voltage versus Collector Current, CURRENT LIMIT SENSE VOLTAGE (V) IPK(sense) V V CC =.0 V I chg = I dischg T A, AMBIENT TEMPERATURE ( C) Figure. Current Limit Sense Voltage versus Temperature CC, SUPPLY CURRENT (ma) C T =.0 nf Pin = V CC Pin = GND V CC, SUPPLY VOLTAGE (V) Figure. Standby Supply Current versus Supply Voltage. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.

5 0 H L 0 S Q Q R Q V V CC I pk OSC Comp. C T. V Ref Reg C T 00 pf N9 R. k R k.0 H V/ ma 0 C O 00 Optional Filter Test Conditions Results Line Regulation =.0 V to V, I O = ma 0 mv = ±0.0% Load Regulation = V, I O = ma to ma 0 mv = ±0.0% Output Ripple = V, I O = ma 00 mvpp Efficiency = V, I O = ma.% Output Ripple With Optional Filter = V, I O = ma 0 mvpp Figure. StepUp Converter

6 R R 0 for constant Figure 9. External Current Boost Connections for I C Peak Greater than. A 9a. External NPN Switch 9b. External NPN Saturated Switch (See Note ). If the output switch is driven into hard saturation (nondarlington configuration) at low switch currents ( 00 ma) and high driver currents ( 0 ma), it may take up to.0 s to come out of saturation. This condition will shorten the off time at frequencies 0 khz, and is magnified at high temperatures. This condition does not occur with a Darlington configuration, since the output switch cannot saturate. If a nondarlington configuration is used, the following output drive condition is recommended.

7 S R Q Q Q 0. V 00 V CC I pk OSC Comp. C T. V Ref Reg N9 C L T 0 pf 0 H R. k R. k 0 C O.0 V/00 ma.0 H 00 Optional Filter Test Conditions Results Line Regulation = V to V, I O = 00 ma mv = ±0.% Load Regulation = V, I O = 0 ma to 00 ma.0 mv = ±0.0% Output Ripple = V, I O = 00 ma 0 mvpp Short Circuit Current = V, R L = 0.. A Efficiency = V, I O = 00 ma.% Output Ripple With Optional Filter = V, I O = 00 ma 0 mvpp Figure 0. StepDown Converter V Figure. External Current Boost Connections for I C Peak Greater than. A a. External NPN Switch b. External PNP Saturated Switch

8 S Q Q R Q 0. I pk OSC C T L H. V to.0 V 00 V CC Comp.. V Ref Reg 00 pf N9 R. k R f C O V/00 ma.0 H 00 Optional Filter Test Conditions Results Line Regulation =. V to.0 V, I O = 00 ma.0 mv = ± 0.0% Load Regulation =.0 V, I O = 0 ma to 00 ma 0.0 V = ± 0.09% Output Ripple =.0 V, I O = 00 ma 00 mvpp Short Circuit Current =.0 V, R L = ma Efficiency =.0 V, I O = 00 ma.% Output Ripple With Optional Filter =.0 V, I O = 00 ma 0 mvpp Figure. Voltage Inverting Converter Figure. External Current Boost Connections for I C Peak Greater than. A a. External NPN Switch b. External PNP Saturated Switch

9 ..00 (Top view, copper foil as seen through the board from the component side) MC0A MC0A MC0A (Top View, Component Side) *Optional Filter. Figure. Printed Circuit Board and Component Layout (Circuits of Figures, 0, ) INDUCTOR DATA Converter Inductance ( H) Turns/Wire StepUp 0 Turns of # AWG StepDown 0 Turns of # AWG VoltageInverting Turns of # AWG All inductors are wound on Magnetics Inc. toroidal core. 9

10 Calculation StepUp StepDown VoltageInverting t on / V F (min) (min) V sat V F (min) V sat V F V sat (t on ) f f f t on t on t on t on t on t on t on (t on ) (t on ) (t on ) C T.0 x 0 t on.0 x 0 t on.0 x 0 t on I pk(switch) I out(max) t on I out(max) I out(max) t on 0./I pk(switch) 0./I pk(switch) 0./I pk(switch) L (min) ((min) V sat ) I pk(switch) t on(max) ((min) V sat ) I pk(switch) t on(max) ((min) V sat ) I pk(switch) t on(max) C O 9 I out t on I pk(switch) (t on ) 9 V ripple(pp) V ripple(pp) I out t on V ripple(pp) V sat = Saturation voltage of the output switch. V F = Forward voltage drop of the output rectifier. The following power supply characteristics must be chosen: Nominal input voltage. Desired output voltage, I out Desired output current.. R R f min Minimum desired output switching frequency at the selected values of and I O. V ripple(pp) Desired peaktopeak output ripple voltage. In practice, the calculated capacitor value will need to be increased due to its equivalent series resistance and board layout. The ripple voltage should be kept to a low value since it will directly affect the line and load regulation. NOTE: For further information refer to Application Note AN90A/D and AN9/D. Figure. Design Formula Table 0

11 ORDERING INFORMATION Device Package Shipping MC0AD SOIC 9 Units / Rail MC0ADG SOIC 9 Units / Rail MC0ADR SOIC 00 Units / Tape & Reel MC0ADRG SOIC 00 Units / Tape & Reel MC0AP PDIP 0 Units / Rail MC0APG PDIP 0 Units / Rail MC0AVD SOIC 9 Units / Rail MC0AVDG SOIC 9 Units / Rail MC0AVDR MC0AVDRG NCV0AVDR* NCV0AVDRG* SOIC SOIC SOIC SOIC 00 Units / Tape & Reel MC0AVP PDIP 0 Units / Rail MC0AVPG PDIP 0 Units / Rail MC0AD SOIC 9 Units / Rail MC0ADG SOIC 9 Units / Rail MC0ADR SOIC 00 Units / Tape & Reel MC0ADRG SOIC 00 Units / Tape & Reel MC0AP PDIP 0 Units / Rail MC0APG PDIP 0 Units / Rail For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD0/D. *NCV0A: T low = 0 C, T high = C. Guaranteed by design. NCV prefix is for automotive and other applications requiring site and change control.

12 PACKAGE DIMENSIONS SOIC NB D SUFFIX CASE 0 ISSUE AG X B Y Z H G A D S C 0. (0.00) M Z Y S X S 0. (0.00) M SEATING PLANE Y 0.0 (0.00) M N X M K J NOTES:. DIMENSIONING AND TOLERANCING PER ANSI Y.M, 9.. CONTROLLING DIMENSION: MILLIMETER.. DIMENSION A AND B DO NOT INCLUDE MOLD PROTRUSION.. MAXIMUM MOLD PROTRUSION 0. (0.00) PER SIDE.. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0. (0.00) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION.. 0 THRU 0 ARE OBSOLETE. NEW STANDARD IS 0. MILLIMETERS INCHES DIM MIN MAX MIN MAX A B C D G. BSC 0.00 BSC H J K M 0 0 N S SOLDERING FOOTPRINT* SCALE : mm inches *For additional information on our PbFree strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.

13 PACKAGE DIMENSIONS PDIP P, P SUFFIX CASE 0 ISSUE L B NOTES:. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL.. PACKAGE CONTOUR OPTIONAL (ROUND OR SQUARE CORNERS).. DIMENSIONING AND TOLERANCING PER ANSI Y.M, 9. NOTE T SEATING PLANE H F A C N D K G 0. (0.00) M T A M B M L J M MILLIMETERS INCHES DIM MIN MAX MIN MAX A B C D F G. BSC 0.00 BSC H J K L. BSC 0.00 BSC M 0 0 N SENSEFET is a trademark of Semiconductor Components Industries, LLC. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Typical parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including Typicals must be validated for each customer application by customer s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box, Denver, Colorado 0 USA Phone: 0 or 000 Toll Free USA/Canada Fax: 0 or 00 Toll Free USA/Canada orderlit@onsemi.com N. American Technical Support: 009 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: Japan Customer Focus Center Phone: 0 ON Semiconductor Website: Order Literature: For additional information, please contact your local Sales Representative MC0A/D