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 Block Diagram 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 Ordering Information Applications Battery power equipment Automotive electronics High efficiency “Green” computer system High efficiency linear power supplies High efficiency post regulator for switching Part No. TS29150CZ-xx Operation Temp. (Ambient) o -20 ~ +85 C TS29150CM-xx Package TO-220 TO-263 Note: Where xx denotes voltage option, available are 12V, 5.0V, 3.3V supply and 2.5V. Contact factory for additional voltage options. Absolute Maximum Rating (Note 1) Input Supply Voltage (Note 2) Operation Input Voltage Vin -18V ~ +60 V Vin (operate) 26 V PD Internally Limited Power Dissipation (Note 3) Operating Junction Temperature Range TJ Storage Temperature Range TSTG W -25 ~ +150 o C -65 ~ +150 o C o Lead Soldering Temperature (260 C) TO-220 / TO-263 Package TS29150 5 1-5 S 2003/12 rev. A Electrical Characteristics Vin = Vout + 1V, IL = 10mA, Co = 47uF, Ta = 25 oC, unless otherwise specified. Parameter Conditions Min Typ Max Unit 0.990|Vo| 12 / 5.0 1.010|Vo| V 0.980|Vo| 3.3/ 2.5 1.020|Vo| V Input Supply Voltage -- -- 26 V Output Voltage Temperature -- 20 100 ppm/ C Output Voltage Output Voltage 10mA ≤ IL ≤ 1.5A, Vo+1V ≤ Vin ≤ 26V o Coefficient Line Regulation Vo+1V ≤ Vin ≤ 26V -- 0.05 0.5 % Load Regulation 10mA ≤ IL ≤ 1.5A -- 0.2 1.0 % Dropout Voltage (Note 4) IL=100mA -- 80 200 IL=750mA -- 200 IL=1.5A -- 350 600 IL=100uA -- 100 -- uA IL=750mA -- 8 -- mA IL=1.5A -- 22 -- Short Circuit Current (Note 6) Vout=0 -- 2.1 3.5 Output Noise, CL=2.2uF -- 600 -- 10Hz to 100KHz, IL=100mA CL=10uF -- 400 -- CL=33uF -- 260 -- Quiescent Current (Note 5) mV A uVrms Thermal Performance Condition Package type Typ Thermal Resistance TO-220 60 Junction to Ambient TO-263 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, θja, 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 θja 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 Minimum Load Current The TS29150 series are high performance with low The TS29150 series is specified between finite loads. If dropout voltage regulator suitable for moderate to high the output current is too small leakage currents current and voltage regulator application. Its 350mA(typ) dominate and the output voltage rises. A 10mA dropout voltage at full load and over temperature makes minimum load current swamps any expected leakage it especially valuable in battery power systems and as current across the operating temperature range. high efficiency noise filters in post regulator applications. Thermal Characteristics 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. 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: The TS29150 series is fully protected from damage due Maximum ambient temperature, Ta to fault conditions. Linear current limiting is provided. Output current, Iout Output voltage, Vout 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. 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 Typical Application Circuit 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 = 1236mW 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 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 10uF minimum capacitor value at full load. Where the calculated by the using to formula: regulator is powered from a source with high AC TR(max) = TJ(max) – TA(max) 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. TS29150 Where: TJ(max) is the maximum allowable junction o temperature, which is 125 C for commercial grade parts. TA(max) is the maximum ambient temperature which will be encountered in the application. 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, θja, can now be found: θja = TR(max) / PD IMPORTANT: if the maximum allowable value for is o o 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 θja falls below these limits, a heatsink is required. TS29150 4-5 2003/12 rev. A TO-220 Mechanical Drawing K B A TO-220 DIMENSION L C DIM P J I M D H F G O E N MILLIMETERS MIN MAX INCHES MIN MAX A 10.000 10.500 0.394 0.413 B 3.240 4.440 0.128 0.175 C D 2.440 - 2.940 6.350 0.096 - 0.116 0.250 E 0.381 1.106 0.015 0.040 F G 2.345 4.690 2.715 5.430 0.092 0.092 0.058 0.107 H 12.700 14.732 0.500 0.581 I J 8.382 14.224 9.017 16.510 0.330 0.560 0.355 0.650 K 3.556 4.826 0.140 0.190 L M 0.508 27.700 1.397 29.620 0.020 1.060 0.055 1.230 N 2.032 2.921 0.080 0.115 O P 0.255 5.842 0.610 6.858 0.010 0.230 0.024 0.270 TO-263 Mechanical Drawing TO-263 DIMENSION A E F B I H C G D TS29150 5-5 DIM MILLIMETERS MIN MAX INCHES MIN MAX A 10.000 10.500 0.394 0.413 B C 14.605 0.508 15.875 0.991 0.575 0.020 0.625 0.039 D 2.420 2.660 0.095 0.105 E F 4.064 1.118 4.830 1.400 0.160 0.045 0.190 0.055 G 0.450 0.730 0.018 0.029 H I 8.280 1.140 8.800 1.400 0.325 0.044 0.346 0.055 J 1.480 1.520 0.058 0.060 2003/12 rev. A