Order this document by MC33269/D 800 mA LOW DROPOUT THREE–TERMINAL VOLTAGE REGULATORS The MC33269 series are low dropout, medium current, fixed and adjustable, positive voltage regulators specifically designed for use in low input voltage applications. These devices offer the circuit designer an economical solution for precision voltage regulation, while keeping power losses to a minimum. The regulator consists of a 1.0 V dropout composite PNP–NPN pass transistor, current limiting, and thermal shutdown. • 3.3 V, 5.0 V, 12 V and Adjustable Versions • • • • • • • D SUFFIX PLASTIC PACKAGE CASE 751 (SOP–8) 8 1 Space Saving DPAK, SOP–8 and SOT–223 Power Packages 1.0 V Dropout Gnd/Adj Output Current in Excess of 800 mA Vout Thermal Protection Short Circuit Protection Vin Output Trimmed to 1.0% Tolerance 1 8 2 7 3 6 4 5 ORDERING INFORMATION Device 3 SOP–8 MC33269DT DPAK MC33269ST 1. Gnd/Adj 2. Vout SOT–223 MC33269T Insertion Mount MC33269D–3.3 SOP–8 MC33269DT–3.3 DPAK MC33269ST–3.3 SOT–223 MC33269T–3.3 MC33269D–5.0 TJ = – 40° to +125°C 125°C MC33269DT–5.0 1 2 3 3. Vin ST SUFFIX PLASTIC PACKAGE CASE 318E (SOT–223) (Top View) Insertion Mount SOP–8 NC DT SUFFIX PLASTIC PACKAGE CASE 369A (DPAK) 1 Package MC33269D Vout (Top View) No Minimum Load Requirement for Fixed Voltage Output Devices Operating Temperature Range NC 1 3 Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2. DPAK MC33269T–5.0 Insertion Mount MC33269ST–5.0 SOT–223 MC33269D–12 T SUFFIX PLASTIC PACKAGE CASE 221A SOP–8 MC33269DT–12 DPAK MC33269T–12 Insertion Mount MC33269ST–12 SOT–223 DEVICE TYPE/NOMINAL OUTPUT VOLTAGE 1 MC33269D MC33269DT MC33269T MC33269ST MC33269D–3.3 MC33269DT–3.3 MC33269T–3.3 MC33269ST–3.3 Adj Adj Adj Adj 3.3 V 3.3 V 3.3 V 3.3 V MC33269D–5.0 MC33269DT–5.0 MC33269T–5.0 MC33269ST–5.0 MC33269D–12 MC33269DT–12 MC33269T–12 MC33269ST–12 5.0 V 5.0 V 5.0 V 5.0 V 12 V 12 V 12 V 12 V This document contains information on a new product. Specifications and information herein are subject to change without notice. MOTOROLA ANALOG IC DEVICE DATA Pin: 1. 2. 3. 2 3 Gnd/Adj Vout Vin 1 2 3 (Top View) Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2. Motorola, Inc. 1997 Rev 4 1 MC33269 MAXIMUM RATINGS Rating Power Supply Input Voltage Power Dissipation Case 369A (DPAK) TA = 25°C Thermal Resistance, Junction–to–Ambient Thermal Resistance, Junction–to–Case Case 751 (SOP–8) TA = 25°C Thermal Resistance, Junction–to–Ambient Thermal Resistance, Junction–to–Case Case 221A TA = 25°C Thermal Resistance, Junction–to–Ambient Thermal Resistance, Junction–to–Case Case 318E TA = 25°C Thermal Resistance, Junction–to–Ambient Thermal Resistance, Junction–to–Case Symbol Value Unit Vin 20 V PD θJA θJC Internally Limited 92 6.0 W °C/W °C/W PD θJA θJC Internally Limited 160 25 W °C/W °C/W PD θJA θJC Internally Limited 65 5.0 W °C/W °C/W PD θJA θJC Internally Limited 245 15 W °C/W °C/W TJ –40 to +150 °C Tstg –55 to +150 °C Operating Junction Temperature Range Storage Temperature NOTE: ESD data available upon request. ELECTRICAL CHARACTERISTICS (CO = 10 µF, TA = 25°C, for min/max values TJ = –40°C to +125°C, unless otherwise noted.) Characteristic Symbol Output Voltage (Iout = 10 mA, TJ = 25°C) 3.3 Suffix (VCC = 5.3 V) 5.0 Suffix (VCC = 7.0 V) 12 Suffix (VCC = 14 V) VO Output Voltage (Line, Load and Temperature) (Note 1) (1.25 V ≤ Vin – Vout ≤ 15 V, Iout = 500 mA) (1.35 V ≤ Vin – Vout ≤ 10 V, Iout = 800 mA) 3.3 Suffix 5.0 Suffix 12 Suffix VO Reference Voltage (Iout = 10 mA, Vin – Vout = 2.0 V, TJ = 25°C) Adjustable Reference Voltage (Line, Load and Temperature) (Note 1) (1.25 V ≤ Vin – Vout ≤ 15 V, Iout = 500 mA) (1.35 V ≤ Vin – Vout ≤ 10 V, Iout = 800 mA) Adjustable Min Typ Max 3.27 4.95 11.88 3.3 5.0 12 3.33 5.05 12.12 Unit V V 3.23 4.9 11.76 3.3 5.0 12 3.37 5.1 12.24 Vref 1.235 1.25 1.265 V Vref 1.225 1.25 1.275 V Line Regulation (Iout = 10 mA, Vin = [Vout + 1.5 V] to Vin = 20 V, TJ = 25°C) Regline – – 0.3 % Load Regulation (Vin = Vout + 3.0 V, Iout = 10 mA to 800 mA, TJ = 25°C) Regload – – 0.5 % – – 1.0 1.1 1.25 1.35 RR 55 – – dB Current Limit (Vin – Vout = 10 V) ILimit 800 – – mA Quiescent Current (Fixed Output) IQ – 5.5 8.0 mA Minimum Required Load Current Fixed Output Adjustable ILoad – 8.0 – – 0 – – – 120 Dropout Voltage (Iout = 500 mA) (Iout = 800 mA) Ripple Rejection (10 Vpp, 120 Hz Sinewave; Iout = 500 mA) Adjustment Pin Current Vin – Vout IAdj V mA µA NOTE 1: The MC33269–12, Vin – Vout is limited to 8.0 V maximum, because of the 20 V maximum rating applied to Vin. 2 MOTOROLA ANALOG IC DEVICE DATA MC33269 Internal Schematic Trim Links VAdj Gnd This device contains 38 active transistors. MOTOROLA ANALOG IC DEVICE DATA 3 MC33269 Figure 1. Dropout Voltage versus Output Load Current Figure 2. Transient Load Regulation ∆ VO , OUTPUT VOLTAGE DEVIATION Vin–Vout , DROPOUT VOLTAGE (V) 1.5 1.3 TA = –40°C TA = 25°C 1.1 TA = 125°C 0.7 0.5 Cin = 10 µF CO = 10 µF Tantalum Vin = VO + 3.0 V Preload = 0.1 A I O , OUTPUT CURRENT 0.9 100 mV/Div 0 200 400 600 800 0.5 A 0A 1000 20 ms/DIV Figure 3. Dropout Voltage versus Temperature Figure 4. MC33269–XX Output DC Current versus Input–Output Differential Voltage 1.6 1100 IO = 800 mA 1.4 1060 OUTPUT CURRENT (A) V FB(OV), OVERVOLTAGE INPUT THRESHOLD (%VFB ) IO, OUTPUT LOAD CURRENT (mA) 1020 980 1.2 1.0 TA = 25°C MC33269D–XX L = 25 mm Copper 0.8 0.6 0.4 940 0.2 900 –55 0 –25 0 25 50 75 TA, AMBIENT TEMPERATURE (°C) 100 125 0 8.0 10 12 14 16 70 VO = 3.3 V or 5.0 V RR, RIPPLE REJECTION RATIO (dB) RR, RIPPLE REJECTION RATIO (dB) 4 6.0 Figure 6. MC33269–ADJ Ripple Rejection versus Frequency 70 60 VO = 12 V 50 Vin = VO + 3.0 V IL = 800 mA TA = 25°C 30 20 0.1 4.0 INPUT–OUTPUT VOLTAGE DIFFERENTIAL (V) Figure 5. MC33269 Ripple Rejection versus Frequency 40 2.0 1.0 10 f, FREQUENCY (kHz) 100 60 50 40 Vin = 8.0 V Vout = 5.0 V IL = 800 mA CAdj = 22 µF TA = 25°C 30 20 0.1 1.0 10 f, FREQUENCY (kHz) 100 MOTOROLA ANALOG IC DEVICE DATA 3.2 2.8 150 PD(max) for TA = 50°C 130 ÏÏÏ ÏÏÏ ÏÏÏ ÏÏÏ ÏÏÏ ÏÏÏ ÏÏÏ ÏÏÏ 110 Graph represents symmetrical layout 90 L 70 2.0 oz. Copper L 50 30 10 20 2.0 1.6 1.2 3.0 mm RθJA 0 2.4 30 0.8 0.4 50 40 L, LENGTH OF COPPER (mm) Figure 9. DPAK Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length 2.4 100 PD(max) for TA = 50°C Free Air Mounted Vertically 90 ÏÏÏ ÏÏÏ ÏÏÏ ÏÏÏ 2.0 oz. Copper L 80 Minimum Size Pad 70 L 60 50 2.0 1.6 1.2 0.8 0.4 RθJA 40 0 0 5.0 10 15 20 25 30 L, LENGTH OF COPPER (mm) 2.50 280 JUNCTION-TO-AIR (°C/W) PD(max) for TA = 50°C Free Air Mounted Vertically 240 1.25 200 Minimum Size Pad 160 120 ÏÏÏ ÏÏÏ ÏÏÏ 2.0 oz. Copper L 0.83 L 0.63 0.50 0.42 80 RθJA 40 0 5.0 10 15 20 25 30 PD, MAXIMUM POWER DISSIPATION (W) Figure 7. SOT–223 Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length 0.35 L, LENGTH OF COPPER (mm) MOTOROLA ANALOG IC DEVICE DATA 5 PD, MAXIMUM POWER DISSIPATION (W) 170 R θ JA, THERMAL RESISTANCE, JUNCTION–TO–AIR (°C/W) Figure 8. SOP–8 Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length R θ JA, THERMAL RESISTANCE R θ JA, THERMAL RESISTANCE, JUNCTION–TO–AIR (°C/W) MC33269 MC33269 APPLICATIONS INFORMATION Figures 10 through 14 are typical application circuits. The output current capability of the regulator is in excess of 800 mA, with a typical dropout voltage of less than 1.0 V. Internal protective features include current and thermal limiting. The MC33269 is not internally compensated and thus requires an external output capacitor for stability. The capacitor should be at least 10 µF with an equivalent series resistance (ESR) of less than 10 Ω over the anticipated operating temperature range. With economical electrolytic capacitors, cold temperature operation can pose a problem. As temperature decreases, the capacitance also decreases and the ESR increases, which could cause the circuit to oscillate. Solid tantalum capacitors may be a better choice if small size is a requirement. Also capacitance and ESR of a solid tantalum capacitor is more stable over temperature. An input bypass capacitor is recommended to improve transient response or if the regulator is connected to the supply input Figure 10. Typical Fixed Output Application Vin Figure 11. Typical Adjustable Output Application Vout Vin Vout MC33269 MC33269–XX CO 10 µF Cin filter with long wire lengths. This will reduce the circuit’s sensitivity to the input line impedance at high frequencies. A 0.33 µF or larger tantalum, mylar, ceramic, or other capacitor having low internal impedance at high frequencies should be chosen. The bypass capacitor should be mounted with shortest possible lead or track length directly across the regulator’s input terminals. Applications should be tested over all operating conditions to insure stability. Internal thermal limiting circuitry is provided to protect the integrated circuit in the event that the maximum junction temperature is exceeded. When activated, typically at 170°C, the output is disabled. There is no hysteresis built into the thermal limiting circuit. As a result, if the device is overheating, the output will appear to be oscillating. This feature is provided to prevent catastrophic failures from accidental device overheating. It is not intended to be used as a substitute for proper heatsinking. Cin R1 Adj Gnd R2 CAdj* An input capacitor is not necessary for stability, however it will improve the overall performance. V out CO 10 µF ǒ Ǔ + 1.25 1 ) R2 ) IAdj R2 R1 Figure 12. Current Regulator RS Vin Iout MC33269 CO 10 µF Cin Adj I out + 1.25 R *CAdj is optional, however it will improve the ripple rejection. The MC34269 develops a 1.25 V reference voltage between the output and the adjust terminal. Resistor R1, operates with constant current to flow through it and resistor R2. This current should be set such that the Adjust Pin current causes negligible drop across resistor R2. The total current with minimum load should be greater than 8.0 mA. S Figure 13. Battery Backed–Up Power Supply Vout Vin Figure 14. Digitally Controlled Voltage Regulator Vout Vin MC33269 MC33269–XX Cin Cin R1 Adj Gnd R2 CO 10 µF MC33269–XX CO 10 µF Cin Gnd The Schottky diode in series with the ground leg of the upper regulator shifts its output voltage higher by the forward voltage drop of the diode. This will cause the lower device to remain off until the input voltage is removed. 6 R2 sets the maximum output voltage. Each transistor reduces the output voltage when turned on. MOTOROLA ANALOG IC DEVICE DATA MC33269 OUTLINE DIMENSIONS D SUFFIX PLASTIC PACKAGE CASE 751–05 (SOP–8) ISSUE R D A NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. DIMENSIONS ARE IN MILLIMETERS. 3. DIMENSION D AND E DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 5. DIMENSION B DOES NOT INCLUDE MOLD PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS OF THE B DIMENSION AT MAXIMUM MATERIAL CONDITION. C 8 5 0.25 H E M B M 1 4 h B X 45 _ e q DIM A A1 B C D E e H h L A C SEATING PLANE L 0.10 A1 B 0.25 M C B S A S q MILLIMETERS MIN MAX 1.35 1.75 0.10 0.25 0.35 0.49 0.18 0.25 4.80 5.00 3.80 4.00 1.27 BSC 5.80 6.20 0.25 0.50 0.40 1.25 0_ 7_ DT SUFFIX PLASTIC PACKAGE CASE 369A–13 (DPAK) ISSUE Y –T– C B V E R 4 Z A S 1 2 3 U K F J L H D G NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. SEATING PLANE 2 PL 0.13 (0.005) MOTOROLA ANALOG IC DEVICE DATA M DIM A B C D E F G H J K L R S U V Z INCHES MIN MAX 0.235 0.250 0.250 0.265 0.086 0.094 0.027 0.035 0.033 0.040 0.037 0.047 0.180 BSC 0.034 0.040 0.018 0.023 0.102 0.114 0.090 BSC 0.175 0.215 0.020 0.050 0.020 ––– 0.030 0.050 0.138 ––– MILLIMETERS MIN MAX 5.97 6.35 6.35 6.73 2.19 2.38 0.69 0.88 0.84 1.01 0.94 1.19 4.58 BSC 0.87 1.01 0.46 0.58 2.60 2.89 2.29 BSC 4.45 5.46 0.51 1.27 0.51 ––– 0.77 1.27 3.51 ––– T 7 MC33269 OUTLINE DIMENSIONS ST SUFFIX PLASTIC PACKAGE CASE 318E–04 ISSUE H (SOT–223) A F 4 S B 1 2 3 D L G J C 0.08 (0003) M H NOTES: 1 DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2 CONTROLLING DIMENSION: INCH. INCHES DIM MIN MAX A 0.249 0.263 B 0.130 0.145 C 0.060 0.068 D 0.024 0.035 F 0.115 0.126 G 0.087 0.094 H 0.0008 0.0040 J 0.009 0.014 K 0.060 0.078 L 0.033 0.041 M 0_ 10 _ S 0.264 0.287 MILLIMETERS MIN MAX 6.30 6.70 3.30 3.70 1.50 1.75 0.60 0.89 2.90 3.20 2.20 2.40 0.020 0.100 0.24 0.35 1.50 2.00 0.85 1.05 0_ 10 _ 6.70 7.30 K T SUFFIX PLASTIC PACKAGE CASE 221A–06 ISSUE Y B F –T– C 4 T S A Q 1 2 3 H K U Z L V R G D N SEATING PLANE NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION Z DEFINES A ZONE WHERE ALL BODY AND LEAD IRREGULARITIES ARE ALLOWED. J DIM A B C D F G H J K L N Q R S T U V Z INCHES MIN MAX 0.570 0.620 0.380 0.405 0.160 0.190 0.025 0.035 0.142 0.147 0.095 0.105 0.110 0.155 0.018 0.025 0.500 0.562 0.045 0.060 0.190 0.210 0.100 0.120 0.080 0.110 0.045 0.055 0.235 0.255 0.000 0.050 0.045 ––– ––– 0.080 MILLIMETERS MIN MAX 14.48 15.75 9.66 10.28 4.07 4.82 0.64 0.88 3.61 3.73 2.42 2.66 2.80 3.93 0.46 0.64 12.70 14.27 1.15 1.52 4.83 5.33 2.54 3.04 2.04 2.79 1.15 1.39 5.97 6.47 0.00 1.27 1.15 ––– ––– 2.04 Motorola reserves the right to make changes without further notice to any products herein. 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