TS39154CP4RO

TS39154 1.5A Ultra Low LDO with Enable TO-252-4L (PPAK) Pin Definition: 1. Enable 2. Input 3. Ground 4. Output 5. Adjustable General Description TS39154 is 1.5A ultra low dropout linear voltage regulators that provide low voltage, high current output from an extremely small package. This regulator offers extremely low dropout (typically 400mV at 1.5A) and very low ground current (typically 25mA at 1.5A). TS39154 is fully protected against over current faults, reversed input polarity, reversed lead insertion, over temperature operation, positive and negative transient voltage spikes, logic level enable control. On the TS39154, the enable pin may be tied to VIN if it is not required for enable control. Features ● ● ● ● ● ● ● Dropout voltage typically 0.4V @ Io=1.5A Output Current up to 1.5A Low Ground Current Extremely Fast Transient Response Reversed Leakage & Reverse Battery Protection Internal Current Limit Thermal Shutdown Protection TM Ordering Information Part No. TS39154CP4 RO Package TO-252-4L Packing 2,500pcs / 13” Reel Application ● ● ● ● ● ● ● PowerPC Power Supplies Battery Powered Equipment Consumer and Personal Electronics High Efficiency Linear Power Supplies SMPS Post Regulator and DC to DC Modules High-efficiency Post Regulator for Switching Supply Low-Voltage microcontrollers and Digital Logic Absolute Maximum Rating (Note 1) Supply Voltage Enable Voltage Storage Temperature Range Lead Soldering Temperature (260 C) ESD o VIN VEN TSTG -20V ~ +20 +20 -65 ~ +150 5 (Note 3) V V o C S Operating Rating (Note 2) Operation Input Voltage Operation Enable Voltage Power Dissipation (Note 4) Operating Junction Temperature Range VIN (operate) VEN (operate) PD TJ +2.25 ~ +16 +2.25 ~ +16 Internally Limited -40 ~ +125 V V W o C 1 /7 Version: D08 TS39154 1.5A Ultra Low LDO with Enable Electrical Characteristics Parameter Reference Output Voltage Reference Output Voltage (Note 7) Line Regulation Load Regulation Output Voltage Temp. Coefficient Adjust Pin Bias Current Adjust Pin Bias Current Temp. Coefficient (Note 8) Dropout Voltage (Note 5) Δ VOUT = -1% IL=100mA IL=750mA IL=1.5A IL=100mA IL=750mA IL=1.5A VIN = VOUT + 1V, VIN =2.5V for fixed reference output voltage, Venable= 2.25V, Ta = 25 C, unless otherwise specified. o Conditions IL=10mA 10mA ≤ IL ≤ 1.5A, 2.5V ≤ VIN ≤ 8V IL=10mA, Vo+1V ≤ VIN ≤ 16V VIN =Vout+1V, 10mA≤IL≤1.5A Min 0.980|Vo| 0.970|Vo| -----------1.8 -2.25 --- Typ 1.24 (VREF) 0.05 0 .2 40 40 0 .1 100 275 400 5 7 25 2.0 ----- Max 1.020|Vo| 1.030|Vo| 0 .5 1.0 100 120 -250 350 700 18 20 --0.8 -75 4 Unit V % % ppm/ C nA nA/ C o o mV Quiescent Current (Note 6) Current Limited Input Logic Voltage Enable Pin Input Current VIN= VOUT +1V mA A V uA VOUT=0, VIN =VOUT+1V Low (OFF) High (ON) VEN =2.25V VEN =0.8V Thermal Performance Condition Thermal Resistance Junction to Case Thermal Resistance Junction to Ambient Symbol RθJC RθJA Typ 10 100 Unit o o C/W 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: The device is not guaranteed to operate outside its operating rating. Note 3: Devices are ESD sensitive. Handling precautions recommended. Note 4: The maximum allowable power dissipation is a function of the maximum junction temperature, TJ, the junction to ambient thermal resistance, ӨJA, 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 ӨJA can be reduced by using a heat sink, Pd(max) = (TJ(max) – Ta) / ӨJA. Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops -1% below its nominal value measured at 1V differential. Note 6: 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, IGND = IIN - IOUT for fix output voltage, , IGND = IIN - IOUT +10mA for fix reference output voltage in full load regulation. Note 7: VREF ≤ VOUT ≤ (VIN – 1V), 2.25V ≤ VIN ≤ 16V, 10mA ≤ IL ≤ 1.0A. Note 8: Output voltage temperature coefficient is ΔVOUT (worse cast) / (TJ(max) – TJ(MIN)) where is TJ(max) +125 C and o TJ(MIN) is 0 C. Note 9: For adjustable device and fixed device with VOUT > 2.25V. 2 /7 Version: D08 o TS39154 1.5A Ultra Low LDO with Enable Pin Description Pin Configuration Enable Input Ground Output Feed Back (adjustable) Pin Description TTL/COMS compatible input. Logic high is enable; logic low or open is shutdown Unregulated input: +16V maximum supply Ground: Ground pin and TAB / heat sink are internally connected. Regulator output Adjustment input: Feedback input. Connect to resistive voltage-divider network. Functional Diagram Application Information The TS39154 is high performance with low dropout voltage regulator suitable for moderate to high current and voltage regulator application. Its 700mV 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 TS39154 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. Output Capacitor Requirement The TS39154 is 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. TS39154 output capacitor selection is dependent upon the ESR of the output capacitor to maintain stability. When the output capacitor is 10uF or greater, the output capacitor should have an ESR less than 2Ω. This will improve transient response as well as promote stability. Ultra low ESR capacitors (