MC33269 Low Dropout Positive Fixed and Adjustable 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. 2.85 V version available as MC34268. • Space Saving DPAK, SOP–8 and SOT–223 Power Packages • 1.0 V Dropout • Output Current in Excess of 800 mA • Thermal Protection • Short Circuit Protection • Output Trimmed to 1.0% Tolerance http://onsemi.com SOP–8 D SUFFIX CASE 751 8 1 Gnd/Adj Vout Vin 1 8 2 7 3 6 4 5 NC DPAK DT SUFFIX CASE 369A 1 Adj Adj Adj 3.3 V 3.3 V 3.3 V 3.3 V Vout (Top View) 3 DEVICE TYPE / NOMINAL OUTPUT VOLTAGE MC33269D MC33269DT MC33269T MC33269D–3.3 MC33269DT–3.3 MC33269T–3.3 MC33269ST–3.3 NC MC33269D–5.0 MC33269DT–5.0 MC33269T–5.0 MC33269D–12 MC33269DT–12 MC33269T–12 5.0 V 5.0 V 5.0 V 12 V 12 V 12 V 1. Gnd/Adj 2. Vout 1 2 3 3. Vin SOT–223 ST SUFFIX CASE 318E (Top View) 1 3 Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2. TO–220AB T SUFFIX CASE 221A 1 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. ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 7 of this data sheet. Semiconductor Components Industries, LLC, 2000 April, 2000 – Rev. 8 1 Publication Order Number: MC33269/D 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 Operating Junction Temperature Range Storage Temperature 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 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) for Adjustable Voltage 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) for Adjustable Voltage 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) (1.5 V ≤ Vout ≤ 3.3 V) (5 V ≤ Vout ≤ 12 V) IQ – – 5.5 – 8.0 20 Dropout Voltage (Iout = 500 mA) (Iout = 800 mA) Vin – Vout Ripple Rejection (10 Vpp, 120 Hz Sinewave; Iout = 500 mA) V mA 1. The MC33269–12, Vin – Vout is limited to 8.0 V maximum, because of the 20 V maximum rating applied to Vin. http://onsemi.com 2 MC33269 ELECTRICAL CHARACTERISTICS (CO = 10 µF, TA = 25°C, for min/max values TJ = –40°C to +125°C, unless otherwise noted.) Characteristic Symbol Minimum Required Load Current Fixed Output Voltage Adjustable Voltage Min Typ Max – 8.0 – – 0 – – – 120 ILoad Adjustment Pin Current IAdj Internal Schematic Unit mA µA Vin Vout Trim Links VAdj Gnd This device contains 38 active transistors. http://onsemi.com 3 MC33269 ∆ VO , OUTPUT VOLTAGE DEVIATION 1.3 TA = –40°C TA = 25°C 1.1 TA = 125°C 0.9 0.7 0.5 100 mV/Div Cin = 10 µF CO = 10 µF Tantalum Vin = VO + 3.0 V Preload = 0.1 A I O , OUTPUT CURRENT Vin –Vout , DROPOUT VOLTAGE (V) 1.5 0 200 400 600 800 0.5 A 0A 1000 20 ms/DIV IO, OUTPUT LOAD CURRENT (mA) Figure 2. Transient Load Regulation 1.6 1100 IO = 800 mA 1.4 1060 OUTPUT CURRENT (A) V FB(OV), OVERVOLTAGE INPUT THRESHOLD (%VFB ) Figure 1. Dropout Voltage versus Output Load Current 1020 980 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 4.0 6.0 8.0 10 12 14 16 Figure 4. MC33269–XX Output DC Current versus Input–Output Differential Voltage 70 RR, RIPPLE REJECTION RATIO (dB) VO = 3.3 V or 5.0 V 60 VO = 12 V 50 Vin = VO + 3.0 V IL = 800 mA TA = 25°C 30 20 0.1 2.0 INPUT–OUTPUT VOLTAGE DIFFERENTIAL (V) 70 40 0 125 Figure 3. Dropout Voltage versus Temperature RR, RIPPLE REJECTION RATIO (dB) 1.2 1.0 10 f, FREQUENCY (kHz) 60 50 40 30 20 0.1 100 Vin = 8.0 V Vout = 5.0 V IL = 800 mA CAdj = 22 µF TA = 25°C Figure 5. MC33269 Ripple Rejection versus Frequency 1.0 10 f, FREQUENCY (kHz) Figure 6. MC33269–ADJ Ripple Rejection versus Frequency http://onsemi.com 4 100 3.2 2.8 PD(max) for TA = 50°C 130 110 ÏÏÏ ÏÏÏ ÏÏÏ ÏÏÏ ÏÏÏ ÏÏÏ ÏÏÏ ÏÏÏ 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) 2.4 100 PD(max) for TA = 50°C Free Air Mounted Vertically 90 ÏÏÏÏ ÏÏÏÏ ÏÏÏÏ ÏÏÏÏ 2.0 oz. Copper L 80 Minimum Size Pad 70 L 60 50 40 5.0 10 15 JUNCTION-TO-AIR (°C/W) PD(max) for TA = 50°C 1.25 ÏÏÏÏ ÏÏÏÏ ÏÏÏÏ 200 Minimum Size Pad 120 2.0 oz. Copper L 0.83 L 0.63 0.50 80 0.42 RθJA 40 0 5.0 10 0.8 0.4 20 25 30 L, LENGTH OF COPPER (mm) 2.50 160 1.2 0 0 280 240 1.6 Figure 8. DPAK Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length Figure 7. SOP–8 Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length Free Air Mounted Vertically 2.0 RθJA 15 20 25 30 0.35 L, LENGTH OF COPPER (mm) Figure 9. SOT–223 Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length http://onsemi.com 5 PD, MAXIMUM POWER DISSIPATION (W) 150 R θ JA, THERMAL RESISTANCE, JUNCTION–TO–AIR (°C/W) 170 R θ JA, THERMAL RESISTANCE R θ JA, THERMAL RESISTANCE, JUNCTION–TO–AIR (°C/W) MC33269 MC33269 APPLICATIONS INFORMATION supply input 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. 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 Vin MC33269 Cin CO 10 µF Cin Vout Vin Vout MC33269–XX R1 Adj Gnd R2 CAdj* An input capacitor is not necessary for stability, however it will improve the overall performance. V out Figure 10. Typical Fixed Output Application RS Vin CO 10 µF Adj I out ǒ Ǔ + 1.25 1 ) R2 ) IAdj R2 R1 *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. Iout MC33269 Cin CO 10 µF + 1.25 R Figure 11. Typical Adjustable Output Application S Figure 12. Current Regulator Vout Vin MC33269–XX Cin Vout Vin MC33269 Gnd Cin R1 Adj 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. R2 sets the maximum output voltage. Each transistor reduces the output voltage when turned on. Figure 13. Battery Backed–Up Power Supply Figure 14. Digitally Controlled Voltage Regulator http://onsemi.com 6 MC33269 ORDERING INFORMATION Device Package Shipping Information MC33269D SO–8 98 Units / Rail MC33269DR2 SO–8 2500 Units / Tape & Reel MC33269DT DPAK 75 Units / Rail DPAK 2500 Units / Tape & Reel TO–220 50 Units / Rail MC33269DTRK MC33269T MC33269D–3.3 SO–8 98 Units / Rail MC33269DR2–3.3 SO–8 2500 Units / Tape & Reel MC33269DT–3.3 DPAK 75 Units / Rail MC33269DTRK–3.3 DPAK 2500 Units / Tape & Reel MC33269ST–3.3T3 SOT–223 4000 Units / Tape & Reel MC33269T–3.3 TO–220 50 Units / Rail MC33269D–5.0 SO–8 98 Units / Rail MC33269DR2–5.0 SO–8 2500 Units / Tape & Reel MC33269DT–5.0 DPAK 75 Units / Rail MC33269DTRK–5.0 DPAK 2500 Units / Tape & Reel MC33269T–5.0 TO–220 50 Units / Rail MC33269D–12 SO–8 98 Units / Rail MC33269DR2–12 SO–8 2500 Units / Tape & Reel MC33269DT–12 DPAK 75 Units / Rail MC33269DTRK–12 DPAK 2500 Units / Tape & Reel TO–220 50 Units / Rail MC33269T–12 http://onsemi.com 7 MC33269 PACKAGE DIMENSIONS SOP–8 D SUFFIX CASE 751–06 ISSUE T D A NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. DIMENSIONS ARE IN MILLIMETER. 3. DIMENSION D AND E DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 5. DIMENSION B DOES NOT INCLUDE DAMBAR 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 B M M 1 4 h B X 45 _ q e A C SEATING PLANE L 0.10 A1 B 0.25 M C B S A S DIM A A1 B C D E e H h L q MILLIMETERS MIN MAX 1.35 1.75 0.10 0.25 0.35 0.49 0.19 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_ DPAK DT SUFFIX CASE 369A–13 ISSUE Z –T– C B V NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. SEATING PLANE E R 4 Z A S 1 2 3 U K F J L H D G 2 PL 0.13 (0.005) M T http://onsemi.com 8 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 ––– MC33269 PACKAGE DIMENSIONS SOT–223 ST SUFFIX CASE 318E–04 ISSUE K A F NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 4 S B 1 2 3 D L G J C 0.08 (0003) M H 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 TO–220AB T SUFFIX CASE 221A–09 ISSUE AA –T– B SEATING PLANE C F T S 4 DIM A B C D F G H J K L N Q R S T U V Z A Q 1 2 3 U H K Z L R V 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 G D N http://onsemi.com 9 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 MC33269 Notes http://onsemi.com 10 MC33269 Notes http://onsemi.com 11 MC33269 ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. 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