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| Order this document by MC33267/D MC33267 Low Dropout Regulator The MC33267 is a positive fixed 5.0 V regulator that is specifically designed to maintain proper voltage regulation with an extremely low input-to-output voltage differential. This device is capable of supplying output currents in excess of 500 mA and contains internal current limiting and thermal shutdown protection. Also featured is an on-chip power-up reset circuit that is ideally suited for use in microprocessor based systems. Whenever the regulator output voltage is below nominal, the reset output is held low. A programmable time delay is initiated after the regulator has reached its nominal level and upon timeout, the reset output is released. Due to the low dropout voltage specifications, the MC33267 is ideally suited for use in battery powered industrial and consumer equipment where an extension of useful battery life is desirable. This device is contained in an economical five lead TO-220 type package. * Low Input-to-Output Voltage Differential LOW DROPOUT REGULATOR with POWER-UP RESET SEMICONDUCTOR TECHNICAL DATA * * * * Output Current in Excess of 500 mA On-Chip Power-Up Reset Circuit with Programmable Delay Internal Current Limiting with Thermal Shutdown Economical Five Lead TO-220 Type Packages Pin 1. VCC Input 2. Reset 3. Ground 4. Delay 5. Output 1 5 ORDERING INFORMATION Device MC33267T MC33267TV MC33267D2T Tested Operating Temperature Range TJ = -40 to +125C TJ = -40 to +105C Package Plastic Power Plastic Power Surface Mount 1 T SUFFIX PLASTIC PACKAGE CASE 314D 5 TV SUFFIX PLASTIC PACKAGE CASE 314B Representative Block Diagram Heatsink surface connected to Pin 3. Input 1 Reference 1.25 V 3.01 R 0.03 R Thermal Overcurrent Detector R Delay 200 + 1.25 V Ground 3 20 A Reset + 3.8 V Delay 4 Reset 2 1 5 Output 5 D2T SUFFIX PLASTIC PACKAGE CASE 936A (D2PAK) Heatsink surface (shown as terminal 6 in case outline drawing) is connected to Pin 3. This device contains 37 active transistors. (c) Motorola, Inc. 1996 Rev 1 MOTOROLA ANALOG IC DEVICE DATA 1 MC33267 MAXIMUM RATINGS Rating Input Voltage Range Delay Voltage Range Delay Sink Current Reset Voltage Range Reset Sink Current Power Dissipation Case 314B and 314D (TO-220 Type) TA = 25C Thermal Resistance, Junction-to-Ambient Thermal Resistance, Junction-to-Case Case 936A (D2PAK) [Note 1] TA = 90C Thermal Resistance, Junction-to-Ambient Thermal Resistance, Junction-to-Case Operating Junction Temperature Range Storage Temperature Range NOTE: Symbol Vin VDLYR IDLY(sink) VRR IR(sink) Value - 20 to + 40 - 0.3 to VO 25 - 0.3 to +15 50 Unit Vdc V mA V mA PD RJA RJC PD RJA RJC TJ Tstg Internally Limited 62.5 4.0 Internally Limited 70 5.0 -40 to +150 -55 to +150 W C/W C/W W C/W C/W C C 1. D2PAK Junction-to-Ambient Thermal Resistance is for vertical mounting. Refer to Figure 7 for board mounted thermal resistance. ELECTRICAL CHARACTERISTICS (Vin = 14.4 V, IO = 5.0 mA, CO = 100 F, CO(ESR) 0.3 , TJ = 25C (Note 2), unless otherwise noted.) Characteristic Output Voltage (IO = 5.0 mA to 500 mA, Vin = 6.0 V to 28 V) TJ = 25C TJ = - 40 to +125C Line Regulation (Vin = 6.0 V to 26 V) Load Regulation (IO = 5.0 mA to 500 mA) Bias Current IO = 0 mA IO = 150 mA IO = 500 mA IO = 500 mA, Vin = 6.2 V Ripple Rejection (f = 120 Hz, Vin = 7.0 V to 17 V, IO = 350 mA, CO = 100 F) Dropout Voltage (IO = 500 mA) Delay Comparator Threshold (VO Decreasing) Delay Pin Source Current Reset Comparator Threshold Reset Sink Saturation (Isink = 10 mA) Reset Off-State Leakage (VCE = 5.0 V) Symbol VO 4.95 4.9 Regline Regload IB - - - - RR 60 Vin - VO Vth(DLY) IDLY(source) Vth(R) VCE(sat) IR(leak) - 4.8 12 3.6 - - 80 0.58 VO - 0.15 20 3.8 0.2 0.3 - 0.8 VO - 0.08 28 4.0 0.8 10 V V A V V A 12 22 100 120 20 40 200 300 dB - - 5.05 - 3.0 1.0 5.15 5.2 50 50 mV mV mA Min Typ Max Unit V NOTE: 2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 2 MOTOROLA ANALOG IC DEVICE DATA MC33267 Figure 1. Typical Application Circuit Input Vin Cin + 0.1 1 3.01 R Reference 1.25 V 0.03 R R Thermal Overcurrent Detector Delay 200 + 1.25 V 4 + 3.8 V Delay + CDLY 20 A Reset 2 Reset Output Output 5 CO + VO 100 Ground 3 = Sink Only Positive True Logic APPLICATION CIRCUIT INFORMATION The MC33267 is a low dropout, positive fixed 5.0 V, 500 mA regulator. Protection features include output current limiting and thermal shutdown. System protection consists of an on-chip power-up microprocessor reset circuit. A typical applications circuit is shown in Figure 1. The input bypass capacitor (Cin) is recommended if the regulator is located an appreciable distance ( 4) from the supply input filter. This will reduce the circuit's sensitivity to the input line impedance at high frequencies. These regulators are not internally compensated and thus require an external output capacitor (CO) for stability. The recommended capacitance is 100 F with an equivalent series resistance (ESR) of less than 0.3 . A minimum capacitance of 33 F with a maximum ESR of 3.0 can be used in applications where space is a premium, however, these limits must be observed over the entire operating temperature range of the regulator circuit. With economical electrolytic capacitors, cold temperature operation can pose a serious stability problem. As the electrolyte freezes, around - 30C, the capacitance will decrease and the ESR will increase drastically, causing the circuit to oscillate. Quality electrolytic capacitors with extended temperature ranges of - 40C to + 85C and - 55C to +105C are readily available. It is suggested that oven testing of the entire circuit be performed with maximum load, minimum input voltage, and minimum ambient temperature. Figure 2 shows the reset circuit timing relationship. Note that whenever the regulator's output is less than 4.9 V, the delay capacitor (CDLY) is immediately discharged, and the reset output is held in a low state. As the regulator's output voltage increases beyond 4.97 V, the delay comparator will allow the 20 A current source to charge CDLY. The reset output will go to a high state when CDLY crosses the 3.8 V threshold of the reset comparator. The reset delay time is controlled by the value selected for CDLY. The required system reset time is governed by the microprocessor and usually a reset signal which lasts several machine cycles is sufficient. MOTOROLA ANALOG IC DEVICE DATA 3 MC33267 Figure 2. Timing Waveforms 5.05 V 4.97 V 4.90 V Regulator Output (Pin 5) 150 mV 4.70 V 3.80 V Delay Capacitor (Pin 4) 0.48 V 5.05 V Reset Output (Pin 2) 0V tDLY tDLY Figure 3. Reset Output versus Input Voltage 6.0 VO , RESET OUTPUT VOLTAGE (V) 5.0 4.0 3.0 2.0 1.0 0 RL = RL = 10 RL = 10 k to VO TJ = 25C VO , OUTPUT VOLTAGE (V) 6.0 5.0 4.0 3.0 2.0 1.0 0 0 Figure 4. Output Voltage versus Input Voltage TJ = 25C RL = RL = 10 0 2.0 4.0 Vin, INPUT VOLTAGE (V) 6.0 8.0 2.0 4.0 Vin, INPUT VOLTAGE (V) 6.0 8.0 4 MOTOROLA ANALOG IC DEVICE DATA MC33267 Figure 5. Reset Output versus Input Voltage 6.0 VO , RESET OUTPUT VOLTAGE (V) 5.0 4.0 3.0 2.0 1.0 0 RL = RL = 10 RL = 10 k to VO TJ = 25C VO , OUTPUT VOLTAGE (V) 6.0 5.0 4.0 3.0 2.0 1.0 0 0 RL = RL = 10 Figure 6. Output Voltage versus Input Voltage TJ = 25C 0 2.0 4.0 Vin, INPUT VOLTAGE (V) 6.0 8.0 2.0 4.0 Vin, INPUT VOLTAGE (V) 6.0 8.0 Figure 7. D2PAK Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length PD(max) for TA = 50C 70 60 50 40 RJA 30 0 5.0 10 15 20 L, LENGTH OF COPPER (mm) Free Air Mounted Vertically 3.0 2.0 oz. Copper L Minimum Size Pad L 2.5 2.0 1.5 1.0 30 PD, MAXIMUM POWER DISSIPATION (W) 80 R JA, THERMAL RESISTANCE JUNCTION-TO-AIR (C/W) 3.5 MOTOROLA ANALOG IC DEVICE DATA III III III III 25 5 MC33267 OUTLINE DIMENSIONS T SUFFIX PLASTIC PACKAGE CASE 314D-03 (TO-220 TYPE) ISSUE D -T- -Q- U A L 12345 SEATING PLANE C B E NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION D DOES NOT INCLUDE INTERCONNECT BAR (DAMBAR) PROTRUSION. DIMENSION D INCLUDING PROTRUSION SHALL NOT EXCEED 10.92 (0.043) MAXIMUM. INCHES MIN MAX 0.572 0.613 0.390 0.415 0.170 0.180 0.025 0.038 0.048 0.055 0.067 BSC 0.087 0.112 0.015 0.025 1.020 1.065 0.320 0.365 0.140 0.153 0.105 0.117 0.543 0.582 MILLIMETERS MIN MAX 14.529 15.570 9.906 10.541 4.318 4.572 0.635 0.965 1.219 1.397 1.702 BSC 2.210 2.845 0.381 0.635 25.908 27.051 8.128 9.271 3.556 3.886 2.667 2.972 13.792 14.783 K S G D 5 PL J H M DIM A B C D E G H J K L Q U S 0.356 (0.014) M TQ TV SUFFIX PLASTIC PACKAGE CASE 314B-05 (TO-220 TYPE) ISSUE J B -P- C OPTIONAL CHAMFER NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION D DOES NOT INCLUDE INTERCONNECT BAR (DAMBAR) PROTRUSION. DIMENSION D INCLUDING PROTRUSION SHALL NOT EXCEED 0.043 (1.092) MAXIMUM. DIM A B C D E F G H J K L N Q S U V W INCHES MIN MAX 0.572 0.613 0.390 0.415 0.170 0.180 0.025 0.038 0.048 0.055 0.850 0.935 0.067 BSC 0.166 BSC 0.015 0.025 0.900 1.100 0.320 0.365 0.320 BSC 0.140 0.153 --- 0.620 0.468 0.505 --- 0.735 0.090 0.110 MILLIMETERS MIN MAX 14.529 15.570 9.906 10.541 4.318 4.572 0.635 0.965 1.219 1.397 21.590 23.749 1.702 BSC 4.216 BSC 0.381 0.635 22.860 27.940 8.128 9.271 8.128 BSC 3.556 3.886 --- 15.748 11.888 12.827 --- 18.669 2.286 2.794 Q E U K F A S L W V 5X J T H N -T- SEATING PLANE G 5X 0.24 (0.610) M D M 0.10 (0.254) TP M 6 MOTOROLA ANALOG IC DEVICE DATA MC33267 OUTLINE DIMENSIONS D2T SUFFIX PLASTIC PACKAGE CASE 936A-02 (D2PAK) ISSUE A NOTES: 1 DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2 CONTROLLING DIMENSION: INCH. 3 TAB CONTOUR OPTIONAL WITHIN DIMENSIONS A AND K. 4 DIMENSIONS U AND V ESTABLISH A MINIMUM MOUNTING SURFACE FOR TERMINAL 6. 5 DIMENSIONS A AND B DO NOT INCLUDE MOLD FLASH OR GATE PROTRUSIONS. MOLD FLASH AND GATE PROTRUSIONS NOT TO EXCEED 0.025 (0.635) MAXIMUM. INCHES MIN MAX 0.386 0.403 0.356 0.368 0.170 0.180 0.026 0.036 0.045 0.055 0.067 BSC 0.539 0.579 0.050 REF 0.000 0.010 0.088 0.102 0.018 0.026 0.058 0.078 5 _ REF 0.116 REF 0.200 MIN 0.250 MIN MILLIMETERS MIN MAX 9.804 10.236 9.042 9.347 4.318 4.572 0.660 0.914 1.143 1.397 1.702 BSC 13.691 14.707 1.270 REF 0.000 0.254 2.235 2.591 0.457 0.660 1.473 1.981 5 _ REF 2.946 REF 5.080 MIN 6.350 MIN -T- A K B 12345 OPTIONAL CHAMFER TERMINAL 6 E U V S H M L D 0.010 (0.254) M T N G R P C DIM A B C D E G H K L M N P R S U V MOTOROLA ANALOG IC DEVICE DATA 7 MC33267 Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola 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 consequential or incidental damages. "Typical" parameters which may be provided in Motorola 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. Motorola does not convey any license under its patent rights nor the rights of others. Motorola 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 Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola 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 Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036. 1-800-441-2447 or 602-303-5454 MFAX: RMFAX0@email.sps.mot.com - TOUCHTONE 602-244-6609 INTERNET: http://Design-NET.com JAPAN: Nippon Motorola Ltd.; Tatsumi-SPD-JLDC, 6F Seibu-Butsuryu-Center, 3-14-2 Tatsumi Koto-Ku, Tokyo 135, Japan. 03-81-3521-8315 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852-26629298 8 *MC33267/D* MOTOROLA ANALOG IC DEVICE DATA MC33267/D |
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