TS39150 TSC | Alldatasheet

Document overview

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Technical content

Features

— Dropout voltage typically 0.4V @Io=1.5A — Output current up to 1.5A — Low ground current — Output voltage trimmed before assembly — Extremely fast transient response — +20V 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. Operation Temp. (Junction) Package TS39150CZxx TO-220 TS39150CMxx -40 ~ +125 oC 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) Vin -20V ~ +20 V Operation Input Voltage Vin (operate) 20 V Power Dissipation (Note 3) P D Internally Limited W Operating Junction Temperature Range T J -40 ~ +125 oC Storage Temperature Range T STG -65 ~ +150 oC Lead Soldering Temperature (260 oC) 5 S TO-263

TS39150 2-5 2005/3 rev. A

Electrical Characteristics

Vin = Vout + 1V, IL = 10mA, Co = 10uF, Ta = 25 oC, unless otherwise specified. Parameter Conditions Min Typ Max Unit Output Voltage 0.990|Vo| 1.010|Vo| V Output Voltage 10mA ≤ IL ≤ 1.5A, Vo+1V ≤ Vin ≤ 26V 0.980|Vo| 12 / 5.0 3.3/ 2.5 1.020|Vo| V Input Supply Voltage -- -- 20 V Output Voltage Temperature Coefficient -- 40 100 ppm/ oC Line Regulation Vo+1V ≤ Vin ≤ 26V -- 0.05 0.5 % Load Regulation 10mA ≤ IL ≤ 1.5A -- 0.2 1.0 % Dropout Voltage (Note 4) I L=100mA IL=750mA IL=1.5A 350 400 200 500 600 mV Quiescent Current (Note 5) I L=100uA IL=750mA IL=1.5A 100 mA Short Circuit Current (Note 6) Vout=0 -- 2.1 3.5 A Output Noise, 10Hz to 100KHz, IL=100mA CL=2.2uF CL=10uF CL=33uF 600 400 260 uVrms Thermal Performance Condition Package type Typ Unit TO-220 60 Thermal Resistance Junction to Ambient TO-263 80 oC/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 20V 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. Ex ceeding 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 t he input to output differential at whic h the output voltage dr ops 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.

TS39150 3-5 2005/3 rev. A

Application Information

The TS39150 series are high performance with low dropout voltage regulator suit able for moderate to high current and voltage regulat or application. Its 400mA(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, dr opout performance of the PNP output of these devices is limited only by low Vce saturation voltage. The TS39150 series is fully protected from damage due to fault conditions. Linear cu rrent limiting is provided. Output current during overl oad 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 out put voltage to be applied without reverse current flow. Typical Application Circuit Capacitor Requirement The TS39150 series requires an output capacitor to maintain stability and improv e transient response is necessary. The value of this capacitor is dependent upon the output current, lower currents allow smaller capacitors. TS39150 series r egulators 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. Minimum Load Current The TS39150 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 TS39150 series linear regulators are simple to use, the most complicated design param eters to consider are thermal characteristics, thermal design requires the following application specification parameters: z Maximum ambient temperature, Ta z Output current, Iout z Output voltage, Vout z Input voltage, Vin We calculate the power di ssipation 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 t he 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 dissi pated by the regulator, P D must be calculated. The below formula shows the voltages and currents for calculating the P D in the regulator: Iin = IL / IG PD = (Vin-Vout) * IL + (Vin) * IG = 1200mW + 36mW = 1236mW Remark: IL is output load current, IG is ground current. Vin is input voltage Vout is output voltage The next parameter which mu st be calculated is the maximum allowable temperature rise, T R(max). this is calculated by the using to formula: T R(max) = TJ(max) – TA(max) Where: T J(max) is the maximum allowable junction temperature, which is 125 oC for commercial grade parts. T A(max) is the maximum ambient temperature which w ill be encountered in the application.

TS39150 4-5 2005/3 rev. A Application Information (continues) Using the calculated values for T R(max) and P D, the maximum allowable value for the junction to ambient thermal resistance, θja, can now be found: θja = T R(max) / PD IMPORTANT: if the maximum allowable value for is found to be ≥60 o C/W for the TO-220 package, ≥80 oC/W for the TO-263 pack age, 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.

TS39150 5-5 2005/3 rev. A TO-220 Mechanical Drawing I J H E G F D C BA M N O L K P TO-220 DIMENSION MILLIMETERS INCHES DIM MIN MAX MIN MAX A 10.000 10.500 0.394 0.413 B 3.240 4.440 0.128 0.175 C 2.440 2.940 0.096 0.116 D - 6.350 - 0.250 E 0.381 1.106 0.015 0.040 F 2.345 2.715 0.092 0.058 G 4.690 5.430 0.092 0.107 H 12.700 14.732 0.500 0.581 I 8.382 9.017 0.330 0.355 J 14.224 16.510 0.560 0.650 K 3.556 4.826 0.140 0.190 L 0.508 1.397 0.020 0.055 M 27.700 29.620 1.060 1.230 N 2.032 2.921 0.080 0.115 O 0.255 0.610 0.010 0.024 P 5.842 6.858 0.230 0.270 TO-263 Mechanical Drawing A D B C H G E F I TO-263 DIMENSION MILLIMETERS INCHES DIM MIN MAX MIN MAX A 10.000 10.500 0.394 0.413 B 14.605 15.875 0.575 0.625 C 0.508 0.991 0.020 0.039 D 2.420 2.660 0.095 0.105 E 4.064 4.830 0.160 0.190 F 1.118 1.400 0.045 0.055 G 0.450 0.730 0.018 0.029 H 8.280 8.800 0.325 0.346 I 1.140 1.400 0.044 0.055 J 1.480 1.520 0.058 0.060