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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. Other voltages available as NCP1117. * 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
DEVICE TYPE / NOMINAL OUTPUT VOLTAGE
MC33269D MC33269DT MC33269T MC33269D-3.3 MC33269DT-3.3 MC33269T-3.3 MC33269ST-3.3 Adj Adj Adj 3.3 V 3.3 V 3.3 V 3.3 V 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 2 3
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SOP-8 D SUFFIX CASE 751
8 1
Gnd/Adj Vout Vin
1 2 3 4 (Top View)
8 7 6 5
NC Vout NC
1 3
DPAK DT SUFFIX CASE 369A
1. Gnd/Adj 2. Vout 3. Vin SOT-223 ST SUFFIX CASE 318E
3
(Top View)
1
Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2.
TO-220AB T SUFFIX CASE 221A
1 2 3
Pin: 1. 2. 3.
123
Gnd/Adj Vout Vin
(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.
(c) Semiconductor Components Industries, LLC, 1999
1
February, 2000 - Rev. 7
Publication Order Number: MC33269/D
MC33269
MAXIMUM RATINGS
Rating Power Supply Input Voltage Power Dissipation Case 369A (DPAK) TA = 25C Thermal Resistance, Junction-to-Ambient Thermal Resistance, Junction-to-Case Case 751 (SOP-8) TA = 25C Thermal Resistance, Junction-to-Ambient Thermal Resistance, Junction-to-Case Case 221A TA = 25C Thermal Resistance, Junction-to-Ambient Thermal Resistance, Junction-to-Case Case 318E TA = 25C Thermal Resistance, Junction-to-Ambient Thermal Resistance, Junction-to-Case Operating Junction Temperature Range Storage Temperature
NOTE: ESD data available upon request.
Symbol Vin
Value 20
Unit V
PD JA JC PD JA JC PD JA JC PD JA JC TJ Tstg
Internally Limited 92 6.0 Internally Limited 160 25 Internally Limited 65 5.0 Internally Limited 245 15 -40 to +150 -55 to +150
W C/W C/W W C/W C/W W C/W C/W W C/W C/W C C
ELECTRICAL CHARACTERISTICS (CO = 10 F, TA = 25C, for min/max values TJ = -40C to +125C, unless otherwise noted.)
Characteristic Output Voltage (Iout = 10 mA, TJ = 25C) 3.3 Suffix (VCC = 5.3 V) 5.0 Suffix (VCC = 7.0 V) 12 Suffix (VCC = 14 V) 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 Reference Voltage (Iout = 10 mA, Vin - Vout = 2.0 V, TJ = 25C) 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 Line Regulation (Iout = 10 mA, Vin = [Vout + 1.5 V] to Vin = 20 V, TJ = 25C) Load Regulation (Vin = Vout + 3.0 V, Iout = 10 mA to 800 mA, TJ = 25C) Dropout Voltage (Iout = 500 mA) (Iout = 800 mA) Ripple Rejection (10 Vpp, 120 Hz Sinewave; Iout = 500 mA) Current Limit (Vin - Vout = 10 V) Quiescent Current (Fixed Output) (1.5 V Vout 3.3 V) (5 V Vout 12 V) Symbol VO 3.27 4.95 11.88 VO 3.3 5.0 12 3.33 5.05 12.12 V Min Typ Max Unit V
3.23 4.9 11.76 Vref Vref 1.235 1.225
3.3 5.0 12 1.25 1.25
3.37 5.1 12.24 1.265 1.275 V V
Regline Regload Vin - Vout
- - - -
- - 1.0 1.1 - - 5.5 -
0.3 0.5 1.25 1.35 - - 8.0 20
% % V
RR ILimit IQ
55 800 - -
dB mA mA
NOTE 1: The MC33269-12, Vin - Vout is limited to 8.0 V maximum, because of the 20 V maximum rating applied to Vin.
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ELECTRICAL CHARACTERISTICS (CO = 10 F, TA = 25C, for min/max values TJ = -40C to +125C, unless otherwise noted.)
Characteristic Minimum Required Load Current Fixed Output Voltage Adjustable Voltage Adjustment Pin Current Symbol ILoad - 8.0 IAdj - - - - 0 - 120 A Min Typ Max Unit mA
NOTE 1: The MC33269-12, Vin - Vout is limited to 8.0 V maximum, because of the 20 V maximum rating applied to Vin.
Internal Schematic
Vin
Vout
Trim Links
VAdj Gnd This device contains 38 active transistors.
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MC33269
Figure 1. Dropout Voltage versus Output Load Current
1.5 Vin-Vout , DROPOUT VOLTAGE (V) 1.3 1.1 0.9 0.7 0.5 TA = 25C TA = -40C VO , OUTPUT VOLTAGE DEVIATION
Figure 2. Transient Load Regulation
100 mV/Div Cin = 10 F CO = 10 F Tantalum Vin = VO + 3.0 V Preload = 0.1 A 0.5 A
TA = 125C
I O , OUTPUT CURRENT
0
200
400
600
800
1000
0A 20 ms/DIV
IO, OUTPUT LOAD CURRENT (mA)
V FB(OV), OVERVOLTAGE INPUT THRESHOLD (%VFB )
Figure 3. Dropout Voltage versus Temperature
1100 IO = 800 mA OUTPUT CURRENT (A) 1060 1020 980 940 900 -55 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 -25 0 25 50 75 TA, AMBIENT TEMPERATURE (C) 100 125
Figure 4. MC33269-XX Output DC Current versus Input-Output Differential Voltage
TA = 25C MC33269D-XX L = 25 mm Copper
0
2.0
4.0
6.0
8.0
10
12
14
16
INPUT-OUTPUT VOLTAGE DIFFERENTIAL (V)
Figure 5. MC33269 Ripple Rejection versus Frequency
70 RR, RIPPLE REJECTION RATIO (dB) 60 VO = 12 V 50 40 30 20 0.1 Vin = VO + 3.0 V IL = 800 mA TA = 25C RR, RIPPLE REJECTION RATIO (dB) VO = 3.3 V or 5.0 V 70 60
Figure 6. MC33269-ADJ Ripple Rejection versus Frequency
50 40 30 20 0.1
Vin = 8.0 V Vout = 5.0 V IL = 800 mA CAdj = 22 F TA = 25C
1.0
10 f, FREQUENCY (kHz)
100
1.0
10 f, FREQUENCY (kHz)
100
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R JA, THERMAL RESISTANCE, JUNCTION-TO-AIR (C/W) R JA, THERMAL RESISTANCE, JUNCTION-TO-AIR (C/W)
Figure 8. SOP-8 Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length
170 150 130 PD(max) for TA = 50C 2.4 3.2 2.8
Figure 9. DPAK Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length
2.4 Free Air Mounted Vertically Minimum Size Pad PD(max) for TA = 50C 2.0 2.0 oz. Copper L
100 90 80 70 60 50
1.6 1.2 0.8 0.4 0
90 70 50 30 RJA 0 10 20
L
L, LENGTH OF COPPER (mm)
R JA, THERMAL RESISTANCE
JUNCTION-TO-AIR (C/W)
240 200 160 120 80
Free Air Mounted Vertically Minimum Size Pad
PD(max) for TA = 50C 1.25 2.0 oz. Copper L 0.83 0.63 0.50 0.42 0.35
L
RJA 40 0 5.0 10 15 20
25
30
L, LENGTH OF COPPER (mm)
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PD, MAXIMUM POWER DISSIPATION (W)
IIII IIII IIII
III I IIIIIII II IIIIIII I III
2.0 oz. Copper L 3.0 mm 30 40 280
110
Graph represents symmetrical layout
2.0 1.6 1.2 0.8
RJA 40 0 5.0 10 15 20
0.4 50
L, LENGTH OF COPPER (mm)
Figure 7. SOT-223 Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length
2.50
IIII IIII IIII IIII
L 25 30
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 F with an equivalent series resistance (ESR) of less than 10 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
Figure 10. Typical Fixed Output Application
Vin MC33269-XX Cin Gnd An input capacitor is not necessary for stability, however it will improve the overall performance. CAdj* V out CO 10 F Vout
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 F 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 170C, 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.
Figure 11. Typical Adjustable Output Application
Vin MC33269 Cin Adj R2 R1 CO 10 F Vout
Figure 12. Current Regulator
Vin MC33269 Cin Adj I out CO 10 F RS Iout
+ 1.25 1 ) R2 ) IAdj R2 R1
+ 1.25 R
S
*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.
Figure 13. Battery Backed-Up Power Supply
Figure 14. Digitally Controlled Voltage Regulator
Vin MC33269 Cin Adj R2 CO 10 F R1 Vout
Vin MC33269-XX Cin Gnd
Vout
MC33269-XX 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. CO 10 F
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MC33269
ORDERING INFORMATION
Device MC33269D MC33269DR2 MC33269DT MC33269DTRK MC33269T MC33269D-3.3 MC33269DR2-3.3 MC33269DT-3.3 MC33269DTRK-3.3 MC33269ST-3.3T3 MC33269T-3.3 MC33269D-5.0 MC33269DR2-5.0 MC33269DT-5.0 MC33269DTRK-5.0 MC33269T-5.0 MC33269D-12 MC33269DR2-12 MC33269DT-12 MC33269DTRK-12 MC33269T-12 Package SO-8 SO-8 DPAK DPAK TO-220 SO-8 SO-8 DPAK DPAK SOT-223 TO-220 SO-8 SO-8 DPAK DPAK TO-220 SO-8 SO-8 DPAK DPAK TO-220 Shipping Information 98 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail 2500 Units / Tape & Reel 50 Units / Rail 98 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail 2500 Units / Tape & Reel 4000 Units / Tape & Reel 50 Units / Rail 98 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail 2500 Units / Tape & Reel 50 Units / Rail 98 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail 2500 Units / Tape & Reel 50 Units / Rail
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MC33269
PACKAGE DIMENSIONS
SOP-8 D SUFFIX CASE 751-06 ISSUE T
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. DIM A A1 B C D E e H h L 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_
A
8
D
5
C
E
1 4
H
0.25
M
B
M
h B C e A
SEATING PLANE
X 45 _
q
L 0.10 A1 B 0.25
M
CB
S
A
S
q
DPAK DT SUFFIX CASE 369A-13 ISSUE Y -T- B V R
4 SEATING PLANE NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 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 ---
C E
S
1 2 3
A K F L D G
2 PL
Z U
J H 0.13 (0.005) T
DIM A B C D E F G H J K L R S U V Z
M
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PACKAGE DIMENSIONS
SOT-223 ST SUFFIX CASE 318E-04 ISSUE H A F
4
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH.
S
1 2 3
B
D L G J C 0.08 (0003) H M K
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
TO-220AB T SUFFIX CASE 221A-09 ISSUE Z -T- C T
4 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. 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
S
Q
123
A U K
H Z L V G D N R J
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Notes
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Notes
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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. 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.
PUBLICATION ORDERING INFORMATION
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