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| TS29150 1.5A Ultra Low Dropout Fixed Positive Voltage Regulator TO-263 Pin assignment: 1. Input 2. Ground 3. Output Low Dropout Voltage 0.6V max. General Description The TS29150 series are using process with a PNP pass element for high current, high accuracy and low dropout voltage regulators. These regulator s feature 350mV(typ) dropout voltages and very low ground current, these devices also find applications in lower current and low dropout critical systems, where their tiny dropout voltage and ground current values are important attributes. The TS29150 are fully protected against over current faults, reversed input polarity, reversed lead insertion, over temperature operation, and positive and negative transient voltage spikes. This series is offered in 3-pin TO-263, TO-220 package. Features Dropout voltage typically 0.6V @Io=1.5A Output current up to 1.5A Low ground current Output voltage trimmed before assembly Extremely fast transient response +30V Input over voltage protection +60V Transient peak voltage -20V Reverse peak voltage Internal current limit Thermal shutdown protection Block Diagram Applications Battery power equipment Automotive electronics High efficiency "Green" computer system High efficiency linear power supplies High efficiency post regulator for switching supply Ordering Information Part No. TS29150CZ-xx TS29150CM-xx Operation Temp. (Ambient) -20 ~ +85 C o Package TO-220 TO-263 Note: Where xx denotes voltage option, available are 12V, 5.0V, 3.3V and 2.5V. Contact factory for additional voltage options. Absolute Maximum Rating (Note 1) Input Supply Voltage (Note 2) Operation Input Voltage Power Dissipation (Note 3) Operating Junction Temperature Range Storage Temperature Range Lead Soldering Temperature (260 C) TO-220 / TO-263 Package 5 S o Vin Vin (operate) PD TJ TSTG -18V ~ +60 26 Internally Limited -25 ~ +150 -65 ~ +150 V V W o o C C TS29150 1-5 2003/12 rev. A Electrical Characteristics Vin = Vout + 1V, IL = 10mA, Co = 47uF, Ta = 25 oC, unless otherwise specified. Parameter Output Voltage Output Voltage Conditions 10mA IL 1.5A, Vo+1V Vin 26V Min 0.990|Vo| 0.980|Vo| Typ 12 / 5.0 3.3/ 2.5 Max 1.010|Vo| 1.020|Vo| Unit V V Input Supply Voltage Output Voltage Temperature Coefficient Line Regulation Load Regulation Dropout Voltage (Note 4) Vo+1V Vin 26V 10mA IL 1.5A IL=100mA IL=750mA IL=1.5A Quiescent Current (Note 5) IL=100uA IL=750mA IL=1.5A Short Circuit Current (Note 6) Output Noise, 10Hz to 100KHz, IL=100mA Vout=0 CL=2.2uF CL=10uF CL=33uF --- -20 26 100 V ppm/ C o ------------- 0.05 0.2 80 200 350 100 8 22 2.1 600 400 260 0.5 1.0 200 % % mV 600 ---3.5 ---uVrms A uA mA Thermal Performance Condition Thermal Resistance Junction to Ambient Package type TO-220 TO-263 Typ 60 80 Unit o C/W Note 1: Absolute Maximum Rating is limits beyond which damage to the device may occur. For guaranteed Specifications and test conditions see the Electrical Characteristics. Note 2: Maximum positive supply voltage of 60V must be limited duration (<100mS) and duty cycle (<1%). Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, Tj, the junction to ambient thermal resistance, ja, and the ambient temperature , Ta. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. The effective value of ja can be reduced by using a heatsink. Note 4: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V differential. Note 5: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the ground pin current and output load current. Note 6: Output current will decrease with increasing temperature, but it will be not dropped below 1.5A at the maximum specified temperature. TS29150 2-5 2003/12 rev. A Application Information The TS29150 series are high performance with low dropout voltage regulator suitable for moderate to high current and voltage regulator application. Its 350mA(typ) dropout voltage at full load and over temperature makes it especially valuable in battery power systems and as high efficiency noise filters in post regulator applications. Unlike normal NPN transistor design, where the base to emitter voltage drop and collector to emitter saturation voltage limit the minimum dropout voltage, dropout performance of the PNP output of these devices is limited only by low Vce saturation voltage. The TS29150 series is fully protected from damage due to fault conditions. Linear current limiting is provided. Output current during overload conditions is constant. Thermal shutdown the device when the die temperature exceeds the maximum safe operating temperature. Transient protection allows device survival even when the input voltage spikes above and below nominal. The output structure of these regulators allows voltages in excess of the desired output voltage to be applied without reverse current flow. Minimum Load Current The TS29150 series is specified between finite loads. If the output current is too small leakage currents dominate and the output voltage rises. A 10mA minimum load current swamps any expected leakage current across the operating temperature range. Thermal Characteristics TS29150 series linear regulators are simple to use, the most complicated design parameters to consider are thermal characteristics, thermal design requires the following application specification parameters: Maximum ambient temperature, Ta Output current, Iout Output voltage, Vout Input voltage, Vin We calculate the power dissipation of the regulator from these numbers and the device parameters from this data sheet. A heatsink may be required depending on the maximum power dissipation and maximum ambient temperature of the application. Under all possible operating conditions, the junction temperature must be within the range specified under absolute maximum ratings. To determine if the heatsink is required, the power dissipated by the regulator, PD must be calculated. The below formula shows the voltages and currents for calculating the PD in the regulator: Iin = IL / IG PD = (Vin-Vout) * IL + (Vin) * IG Ex. PD = (3.3V-2.5V) * 1.5A + 3.3V * 11mA = 1200mW + 36mW Typical Application Circuit Capacitor Requirement The TS29150 series requires an output capacitor to maintain stability and improve transient response is necessary. The value of this capacitor is dependent upon the output current, lower currents allow smaller capacitors. TS29150 series regulators are stable with the 10uF minimum capacitor value at full load. Where the regulator is powered from a source with high AC impedance, a 0.1uF capacitor connected between input and ground is recommended. The capacitor should have good characteristics to above 250KHz. The capacitance values will be improved transient response, ripple rejection and output noise. = 1236mW Remark: IL is output load current, IG is ground current. Vin is input voltage Vout is output voltage The next parameter which must be calculated is the maximum allowable temperature rise, TR(max). this is calculated by the using to formula: TR(max) = TJ(max) - TA(max) Where: TJ(max) is the maximum allowable junction temperature, which is 125 C for commercial grade parts. TA(max) is the maximum ambient temperature which will be encountered in the application. o TS29150 3-5 2003/12 rev. A Using the calculated values for TR(max) and PD, the maximum allowable value for the junction to ambient thermal resistance, ja, can now be found: ja = TR(max) / PD IMPORTANT: if the maximum allowable value for is found to be 60 C/W for the TO-220 package, 80 C/W for the TO-263 package, no heatsink is needed since the package alone will dissipate enough heat to satisfy these requirements. If the calculated value for ja falls below these limits, a heatsink is required. o o TS29150 4-5 2003/12 rev. A TO-220 Mechanical Drawing A B C K L DIM TO-220 DIMENSION MILLIMETERS MIN MAX 10.000 3.240 2.440 0.381 2.345 4.690 12.700 8.382 14.224 3.556 0.508 27.700 2.032 0.255 5.842 10.500 4.440 2.940 6.350 1.106 2.715 5.430 14.732 9.017 16.510 4.826 1.397 29.620 2.921 0.610 6.858 INCHES MIN MAX 0.394 0.128 0.096 0.015 0.092 0.092 0.500 0.330 0.560 0.140 0.020 1.060 0.080 0.010 0.230 0.413 0.175 0.116 0.250 0.040 0.058 0.107 0.581 0.355 0.650 0.190 0.055 1.230 0.115 0.024 0.270 P A B C D J I M E F G H I J K L M N D H F G E O N O P TO-263 Mechanical Drawing A TO-263 DIMENSION E F DIM A B C MILLIMETERS MIN MAX 10.000 14.605 0.508 2.420 4.064 1.118 0.450 8.280 1.140 1.480 10.500 15.875 0.991 2.660 4.830 1.400 0.730 8.800 1.400 1.520 INCHES MIN MAX 0.394 0.575 0.020 0.095 0.160 0.045 0.018 0.325 0.044 0.058 0.413 0.625 0.039 0.105 0.190 0.055 0.029 0.346 0.055 0.060 B I H D E F G H I C D G J TS29150 5-5 2003/12 rev. A |
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