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MC34063A, MC33063A, NCV33063A 1.5 A, Step-Up/Down/ Inverting Switching Regulators
The MC34063A Series is a monolithic control circuit containing the primary functions required for DC-to-DC 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 Step-Down and Step-Up and Voltage-Inverting applications with a minimum number of external components. Refer to Application Notes AN920A/D and AN954/D for additional design information.
Features http://onsemi.com MARKING DIAGRAMS
8 8 1 SOIC-8 D SUFFIX CASE 751 1 3x063 ALYWA G
* * * * * * * *
Operation from 3.0 V to 40 V Input Low Standby Current Current Limiting Output Switch Current to 1.5 A Output Voltage Adjustable Frequency Operation to 100 kHz Precision 2% Reference Pb-Free Packages are Available
8 3x063AP1 AWL YYWWG PDIP-8 P, P1 SUFFIX CASE 626 8 1 33063AVP AWL YYWWG 1 Switch Collector x A L, WL Y, YY W, WW G or G = 3 or 4 = Assembly Location = Wafer Lot = Year = Work Week = Pb-Free Package 1 8
Drive 8 Collector SQ 7 R 100 Ipk Oscillator CT 6 VCC Comparator + - Comparator 5 Inverting Input (Bottom View) 1.25 V Reference Regulator Q2 Q1
1
Ipk Sense
2
Switch Emitter
3
PIN CONNECTIONS
Timing Capacitor Switch Collector 1 2 3 4 (Top View) 8 7 6 5 Driver Collector Ipk Sense VCC Comparator Inverting Input
4 GND
Switch Emitter Timing Capacitor GND
This device contains 51 active transistors.
Figure 1. Representative Schematic Diagram
ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 11 of this data sheet.
(c) Semiconductor Components Industries, LLC, 2007
1
February, 2007 - Rev. 19
Publication Order Number: MC34063A/D
MC34063A, MC33063A, NCV33063A
MAXIMUM RATINGS
Rating Power Supply Voltage Comparator Input Voltage Range Switch Collector Voltage Switch Emitter Voltage (VPin 1 = 40 V) Switch Collector to Emitter Voltage Driver Collector Voltage Driver Collector Current (Note 1) Switch Current Power Dissipation and Thermal Characteristics Plastic Package, P, P1 Suffix TA = 25C Thermal Resistance SOIC Package, D Suffix TA = 25C Thermal Resistance Operating Junction Temperature Operating Ambient Temperature Range MC34063A MC33063AV, NCV33063A MC33063A Storage Temperature Range Tstg PD RqJA TJ TA 0 to +70 -40 to +125 -40 to + 85 -65 to +150 C 625 160 +150 mW C/W C C PD RqJA 1.25 100 W C/W 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 Vdc Vdc Vdc Vdc Vdc Vdc mA A
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. 1. Maximum package power dissipation limits must be observed. 2. This device series contains ESD protection and exceeds the following tests: Human Body Model 4000 V per MIL-STD-883, Method 3015. Machine Model Method 400 V. 3. NCV prefix is for automotive and other applications requiring site and change control.
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MC34063A, MC33063A, NCV33063A
ELECTRICAL CHARACTERISTICS (VCC = 5.0 V, TA = Tlow to Thigh [Note 4], unless otherwise specified.)
Characteristics OSCILLATOR Frequency (VPin 5 = 0 V, CT = 1.0 nF, TA = 25C) Charge Current (VCC = 5.0 V to 40 V, TA = 25C) Discharge Current (VCC = 5.0 V to 40 V, TA = 25C) Discharge to Charge Current Ratio (Pin 7 to VCC, TA = 25C) Current Limit Sense Voltage (Ichg = Idischg, TA = 25C) OUTPUT SWITCH (Note 5) Saturation Voltage, Darlington Connection ( ISW = 1.0 A, Pins 1, 8 connected) Saturation Voltage (Note 6) (ISW = 1.0 A, RPin 8 = 82 W to VCC, Forced b ] 20) DC Current Gain (ISW = 1.0 A, VCE = 5.0 V, TA = 25C) Collector Off-State Current (VCE = 40 V) COMPARATOR Threshold Voltage TA = 25C TA = Tlow to Thigh Threshold Voltage Line Regulation (VCC = 3.0 V to 40 V) MC33063A, MC34063A MC33063AV, NCV33063A Input Bias Current (Vin = 0 V) TOTAL DEVICE Supply Current (VCC = 5.0 V to 40 V, CT = 1.0 nF, Pin 7 = VCC, VPin 5 > Vth, Pin 2 = GND, remaining pins open) ICC - - 4.0 mA Vth 1.225 1.21 Regline - - IIB - 1.4 1.4 -20 5.0 6.0 -400 nA 1.25 - 1.275 1.29 mV V VCE(sat) VCE(sat) hFE IC(off) - - 50 - 1.0 0.45 75 0.01 1.3 0.7 - 100 V V - mA fosc Ichg Idischg Idischg/Ichg Vipk(sense) 24 24 140 5.2 250 33 35 220 6.5 300 42 42 260 7.5 350 kHz mA mA - mV Symbol Min Typ Max Unit
4. Tlow = 0C for MC34063A, - 40C for MC33063A, AV, NCV33063A Thigh = +70C for MC34063A, + 85C for MC33063A, +125C for MC33063AV, NCV33063A 5. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible. 6. 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 2.0 ms for it 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, since the output switch cannot saturate. If a non-Darlington configuration is used, the following output drive condition is recommended: IC output Forced b of output switch : w 10 IC driver - 7.0 mA * * The 100 W resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts.
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MC34063A, MC33063A, NCV33063A
t on-off, OUTPUT SWITCH ON-OFF TIME ( s) 1000 500 200 100 50 20 10 5.0 2.0 1.0 0.01 0.02 0.05 0.1 0.2 0.5 1.0 2.0 CT, OSCILLATOR TIMING CAPACITOR (nF) 5.0 10 toff VCC = 5.0 V Pin 7 = VCC Pin 5 = GND TA = 25C ton V OSC, OSCILLATOR VOLTAGE (V)
VCC = 5.0 V Pin 7 = VCC Pin 2 = GND
Pins 1, 5, 8 = Open CT = 1.0 nF TA = 25C 10 ms/DIV
Figure 2. Output Switch On-Off Time versus Oscillator Timing Capacitor
1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0 0.2 0.4 0.6 0.8 1.0 1.2 IE, EMITTER CURRENT (A) 1.4 1.6 VCC = 5.0 V Pins 1, 7, 8 = VCC Pins 3, 5 = GND TA = 25C (See Note 7) VCE(sat), SATURATION VOLTAGE (V) VCE(sat), SATURATION VOLTAGE (V) 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0
Figure 3. Timing Capacitor Waveform
Darlington Connection
VCC = 5.0 V Pin 7 = VCC Pins 2, 3, 5 = GND TA = 25C (See Note 7)
Forced b = 20
0.2
0.4 0.6 0.8 1.0 1.2 IC, COLLECTOR CURRENT(A)
1.4
1.6
Figure 4. Emitter Follower Configuration Output Saturation Voltage versus Emitter Current
VIPK(sense), CURRENT LIMIT SENSE VOLTAGE (V)
Figure 5. Common Emitter Configuration Output Switch Saturation Voltage versus Collector Current
3.6 3.2 I CC, SUPPLY CURRENT (mA)
400 380 360 340 320 300 280 260 240 220 200 -55 -25 0 25 50 75 TA, AMBIENT TEMPERATURE (C) 100 125 VCC = 5.0 V Ichg = Idischg
2.8 2.4 2.0 1.6 1.2 0.8 0.4 0 0 5.0 10 15 20 25 30 VCC, SUPPLY VOLTAGE (V) 35 40 CT = 1.0 nF Pin 7 = VCC Pin 2 = GND
Figure 6. Current Limit Sense Voltage versus Temperature
Figure 7. Standby Supply Current versus Supply Voltage
7. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
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200 mV/DIV
MC34063A, MC33063A, NCV33063A
170 mH L 8 180 SQ R 7 Ipk OSC 6 + 100
+ -
1 Q2 Q1 2 1N5819 CT 3 CT Comp. 1.25 V Ref Reg 4 R2 1.0 mH Vout 28 V/175 mA + 330 CO + 100 Vout 1500 pF
Rsc 0.22 Vin 12 V VCC
5
R1
2.2 k
47 k
Optional Filter
Test Line Regulation Load Regulation Output Ripple Efficiency Output Ripple With Optional Filter
Conditions Vin = 8.0 V to 16 V, IO = 175 mA Vin = 12 V, IO = 75 mA to 175 mA Vin = 12 V, IO = 175 mA Vin = 12 V, IO = 175 mA Vin = 12 V, IO = 175 mA
Results 30 mV = 0.05% 10 mV = 0.017% 400 mVpp 87.7% 40 mVpp
Figure 8. Step-Up Converter
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MC34063A, MC33063A, NCV33063A
8
1
Vout
R 8 1
Vout
7
2 Rsc
7
2
Rsc Vin 6 Vin
6
R 0 for constant Vin
Figure 9. External Current Boost Connections for IC Peak Greater than 1.5 A 9a. External NPN Switch 9b. External NPN Saturated Switch
(See Note 8)
8. 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 2.0 ms 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, since the output switch cannot saturate. If a non-Darlington configuration is used, the following output drive condition is recommended.
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MC34063A, MC33063A, NCV33063A
8 SQ R 7 Ipk OSC 6 100 + VCC
+ -
1 Q2 Q1 2 CT 1N5819 3 L CT 470 pF 4 1.0 mH + CO Vout 100 220 mH
Rsc 0.33 Vin 25 V
Comp.
1.25 V Ref Reg
5
R2 3.6 k R1 1.2 k 470 +
Vout 5.0 V/500 mA
Optional Filter Test Line Regulation Load Regulation Output Ripple Short Circuit Current Efficiency Output Ripple With Optional Filter Conditions Vin = 15 V to 25 V, IO = 500 mA Vin = 25 V, IO = 50 mA to 500 mA Vin = 25 V, IO = 500 mA Vin = 25 V, RL = 0.1 W Vin = 25 V, IO = 500 mA Vin = 25 V, IO = 500 mA Results 12 mV = 0.12% 3.0 mV = 0.03% 120 mVpp 1.1 A 83.7% 40 mVpp
Figure 10. Step-Down Converter
8
1 8
1 V
7 Rsc Vin 6
2 Vout Rsc Vin
7
2
6
Figure 11. External Current Boost Connections for IC Peak Greater than 1.5 A 11a. External NPN Switch 11b. External PNP Saturated Switch
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MC34063A, MC33063A, NCV33063A
8 SQ R 7 Ipk OSC 6 + 100
+ -
1 Q2 Q1 2 L 3 1.25 V Ref Reg 4 R1 953 1.0 mH Vout -12 V/100 mA 1000 mf + CO + 100 Vout + 1500 pF 1N5819 88 mH
Rsc 0.24 Vin 4.5 V to 6.0 V VCC
CT
Comp.
5
R2
8.2 k
Optional Filter
Test Line Regulation Load Regulation Output Ripple Short Circuit Current Efficiency Output Ripple With Optional Filter
Conditions Vin = 4.5 V to 6.0 V, IO = 100 mA Vin = 5.0 V, IO = 10 mA to 100 mA Vin = 5.0 V, IO = 100 mA Vin = 5.0 V, RL = 0.1 W Vin = 5.0 V, IO = 100 mA Vin = 5.0 V, IO = 100 mA
Results 3.0 mV = 0.012% 0.022 V = 0.09% 500 mVpp 910 mA 62.2% 70 mVpp
Figure 12. Voltage Inverting Converter
8
1 8
1 Vout
7
2 Vout
7
2
Vin
6
3 + 4
Vin
6
3+
4
Figure 13. External Current Boost Connections for IC Peak Greater than 1.5 A 13a. External NPN Switch 13b. External PNP Saturated Switch
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MC34063A, MC33063A, NCV33063A
5.45
2.500
(Top view, copper foil as seen through the board from the component side)
MC34063A
MC34063A
MC34063A
(Top View, Component Side)
*Optional Filter.
Figure 14. Printed Circuit Board and Component Layout
(Circuits of Figures 8, 10, 12)
INDUCTOR DATA
Converter Step-Up Step-Down Voltage-Inverting Inductance (mH) 170 220 88 Turns/Wire 38 Turns of #22 AWG 48 Turns of #22 AWG 28 Turns of #22 AWG
All inductors are wound on Magnetics Inc. 55117 toroidal core.
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MC34063A, MC33063A, NCV33063A
Calculation ton/toff Step-Up V out ) V F * V in(min) V in(min) * V sat 1 f t on ) t off t on )1 t off 10-5 Step-Down V out ) V F * V sat * V out in(min) 1 f t on ) t off t on )1 t off 10-5 Voltage-Inverting |V out| ) V F V * V sat in 1 f t on ) t off t on )1 t off
V
(ton + toff) toff
ton CT Ipk(switch) 2I Rsc L(min)
(ton + toff) - toff 4.0 x ton
(ton + toff) - toff 4.0 x ton 2I
(ton + toff) - toff 4.0 x 10-5 ton t on )1 t off
out(max)
t on )1 t off
2I out(max) 0.3/Ipk(switch)
out(max)
0.3/Ipk(switch) (V in(min) * V sat) I pk(switch) 9 I outt on V ripple(pp) t
0.3/Ipk(switch) t (V in(min) * V sat) I pk(switch) 9 I outt on V ripple(pp) t
on(max)
(V in(min) * V sat * V out) I pk(switch)
on(max)
on(max)
CO
I pk(switch)(t on ) t off) 8V ripple(pp)
Vsat = Saturation voltage of the output switch. VF = Forward voltage drop of the output rectifier. The following power supply characteristics must be chosen: Vin - Nominal input voltage. Vout - Desired output voltage, |V out| + 1.25 1 ) R2 R1 Iout - Desired output current. fmin - Minimum desired output switching frequency at the selected values of Vin and IO. Vripple(pp) - Desired peak-to-peak 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 AN920A/D and AN954/D.
Figure 15. Design Formula Table
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MC34063A, MC33063A, NCV33063A
ORDERING INFORMATION
Device MC33063AD MC33063ADG MC33063ADR2 MC33063ADR2G MC33063AP1 MC33063AP1G MC33063AVD MC33063AVDG MC33063AVDR2 MC33063AVDR2G NCV33063AVDR2* NCV33063AVDR2G* MC33063AVP MC33063AVPG MC34063AD MC34063ADG MC34063ADR2 MC34063ADR2G MC34063AP1 MC34063AP1G Package SOIC-8 SOIC-8 (Pb-Free) SOIC-8 SOIC-8 (Pb-Free) PDIP-8 PDIP-8 (Pb-Free) SOIC-8 SOIC-8 (Pb-Free) SOIC-8 SOIC-8 (Pb-Free) SOIC-8 SOIC-8 (Pb-Free) PDIP-8 PDIP-8 (Pb-Free) SOIC-8 SOIC-8 (Pb-Free) SOIC-8 SOIC-8 (Pb-Free) PDIP-8 PDIP-8 (Pb-Free) 50 Units / Rail 50 Units / Rail 98 Units / Rail 98 Units / Rail 2500 Units / Tape & Reel 2500 Units / Tape & Reel 50 Units / Rail 50 Units / Rail 2500 Units / Tape & Reel Shipping 98 Units / Rail 98 Units / Rail 2500 Units / Tape & Reel 2500 Units / Tape & Reel 50 Units / Rail 50 Units / Rail 98 Units / Rail 98 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, BRD8011/D. *NCV33063A: Tlow = -40C, Thigh = +125C. Guaranteed by design. NCV prefix is for automotive and other applications requiring site and change control.
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MC34063A, MC33063A, NCV33063A
PACKAGE DIMENSIONS
SOIC-8 NB D SUFFIX CASE 751-07 ISSUE AG
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. 6. 751-01 THRU 751-06 ARE OBSOLETE. NEW STANDARD IS 751-07. MILLIMETERS MIN MAX 4.80 5.00 3.80 4.00 1.35 1.75 0.33 0.51 1.27 BSC 0.10 0.25 0.19 0.25 0.40 1.27 0_ 8_ 0.25 0.50 5.80 6.20 INCHES MIN MAX 0.189 0.197 0.150 0.157 0.053 0.069 0.013 0.020 0.050 BSC 0.004 0.010 0.007 0.010 0.016 0.050 0_ 8_ 0.010 0.020 0.228 0.244
-X- A
8 5
B
1 4
S
0.25 (0.010)
M
Y
M
-Y- G C -Z- H D 0.25 (0.010)
M SEATING PLANE
K
N
X 45 _
0.10 (0.004)
M
J
ZY
S
X
S
DIM A B C D G H J K M N S
SOLDERING FOOTPRINT*
1.52 0.060
7.0 0.275
4.0 0.155
0.6 0.024
1.270 0.050
SCALE 6:1 mm inches
*For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.
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MC34063A, MC33063A, NCV33063A
PACKAGE DIMENSIONS
PDIP-8 P, P1 SUFFIX CASE 626-05 ISSUE L
8
5
-B-
1 4
NOTES: 1. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. 2. PACKAGE CONTOUR OPTIONAL (ROUND OR SQUARE CORNERS). 3. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. DIM A B C D F G H J K L M N MILLIMETERS MIN MAX 9.40 10.16 6.10 6.60 3.94 4.45 0.38 0.51 1.02 1.78 2.54 BSC 0.76 1.27 0.20 0.30 2.92 3.43 7.62 BSC --- 10_ 0.76 1.01 INCHES MIN MAX 0.370 0.400 0.240 0.260 0.155 0.175 0.015 0.020 0.040 0.070 0.100 BSC 0.030 0.050 0.008 0.012 0.115 0.135 0.300 BSC --- 10_ 0.030 0.040
F
NOTE 2
-A- L
C -T-
SEATING PLANE
J N D K
M
M TA B
H
G 0.13 (0.005)
M M
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
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MC34063A/D

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