TS5218 800mA Ultra Low Dropout Voltage Regulator with Enable TDFN 3x3 Pin Definition: 1. Enable 2. Input 3. Output 4. Feedback 5.6.7.8. Ground General Description The TS5218 is 800mA ultra low dropout linear voltage regulators that provide low voltage, high current output from an extremely small package. These regulators offers extremely low dropout (typically 400mV at 800mA) and very low ground current (typically 12mA at 800mA). The TS5218 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. Features ● ● ● ● ● ● Application ● ● ● ● ● ● ● ● ● Ordering Information Dropout voltage typically 0.4V @Io=800mA Output Current up to 800mA Low Ground Current Extremely Fast Transient Response Reversed Leakage & Reverse Battery Protection Current Limit & Thermal Shutdown Protection Part No. TS5218CQ RF Package DFN 3x3 Packing 3Kpcs / 7” Reel Typical Application Circuit ULDO Linear Regulator for PC add-in Cards TM 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 Portable Application Low-Voltage microcontrollers and Digital Logic Absolute Maximum Rating (Note 1) Parameter Symbol Value Unit VIN VEN TSTG -20V ~ +20 +20 -65 ~ +150 5 (Note 3) V V o C S Operation Input Voltage VIN (operate) +2.25 ~ +16 V Operation Enable Voltage Power Dissipation (Note 4) VEN (operate) PD +2.25 ~ +16 Internally Limited V W TJ RθJC -40 ~ +125 20 Supply Voltage Enable Voltage Storage Temperature Range o Lead Soldering Temperature (260 C) ESD Operating Rating (Note 2) Operating Junction Temperature Range Thermal Resistance Junction to Case 1/7 o o C C/W Version: A09 TS5218 800mA Ultra Low Dropout Voltage Regulator with Enable Electrical Characteristics o VIN = VOUT + 1V, VIN =2.5V for fixed reference output voltage, Venable= 2.25V, Ta = 25 C, unless otherwise specified. Parameter Fixed Reference Output Voltage Line Regulation Load Regulation Conditions IL=10mA 10mA ≤ IL ≤ 800mA, 2.5V ≤ VIN ≤ 16V Min 0.980|Vo| Typ Max 1.020|Vo| 0.970|Vo| 1.24 (VREF) IL=10mA, Vo+1V ≤ VIN ≤ 16V VIN =Vout+1V, 8mA≤IL≤300mA --- 0.05 0.05 0.5 0.1 VIN =Vout+1V, 10mA≤IL≤800mA --- 0.2 40 1.0 100 Output Voltage Temp. Coefficient Unit V 1.030|Vo| % % o ppm/ C Dropout Voltage (Note 5) ΔVOUT = -1% IL=100mA IL=400mA IL=800mA ---- 100 300 400 250 380 700 mV Quiescent Current (Note 6) VIN= VOUT +1V IL=100mA IL=500mA IL=800mA ---- 0.7 4.0 12.0 2 6 20 mA Current Limited VOUT =0, VIN = VOUT +1V Low (OFF) --- 1.8 -- -0.8 High (ON) VEN =2.25V 2.25 -- --- -75 VEN =0.8V --- -40 4 120 Input Logic Voltage Enable Pin Input Current Adjust Pin Bias Current A V uA nA o Reference Voltage Temp. Coefficient (Note 8) -20 -ppm/ C o Adjust Pin Bias Current Temp. Coefficient -0.1 -nA/ C 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. 2. The device is not guaranteed to operate outside its operating rating. 3. Devices are ESD sensitive. Handling precautions recommended. 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. 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. 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. 7. VREF ≤ VOUT ≤ (VIN – 1V), 2.25V ≤ VIN ≤ 16V, 10mA ≤ IL ≤ 1.0A. o 8. Output voltage temperature coefficient is ΔVOUT (worse cast) / (TJ(max) – TJ(MIN)) where is TJ(max) +125 C and TJ(MIN) is o 0 C. 2/7 Version: A09 TS5218 800mA Ultra Low Dropout Voltage Regulator with Enable Functional Diagram Application Information The TS5218 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 TS5218 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 TS5218 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. TS5218 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 (<100mΩ), such as ceramic chip capacitors, may promote instability. These very low ESR levels may cause an oscillation and/or under damped transient response. A low ESR solid tantalum capacitor works extremely well and provides good transient response and stability over temperature aluminum electrolytes can also be used, as long as the ESR of the capacitor is <2Ω. The value of the output capacitor can be increased without limit. Higher capacitance values help to improve transient response and ripple rejection and reduce output noise. 3/7 Version: A09 TS5218 800mA Ultra Low Dropout Voltage Regulator with Enable Application Information (Continue) Input Capacitor Requirement An input capacitor of 1uF or greater is recommended when the device is more than 4” away from the bulk AC supply capacitance or when the supply is a battery. Small, surface mount, ceramic chip capacitors can be used for bypassing. Larger values will help to improve ripple rejection by bypassing the input to the regulator, further improving the integrity of the output voltage. Minimum Load Current The TS5218 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 is necessary for proper regulation. Enable Input TS5218 versions feature an active-high enable (EN) input that allows ON/OFF control of the regulator. Current drain reduces to “zero” when the device is shutdown, with only micro-amperes of leakage current. The EN input has TTL/CMOS compatible thresholds for simple interfacing with logic interfacing. EN may be directly tied to VIN and pulled up to the maximum supply voltage. Adjustable Regulator Design The TS5218 is allowed to programming the output voltage anywhere between 1.25 and the 16V maximum operating rating of the family. Two resistors are used. Resistors can be quite large up to 1MΩ, because of the very high input impedance and low bias current of the sense comparator, the resistor values are calculated by: Where VOUT is the desired output voltage. Above application circuit shows component definition. Applications with widely varying load currents may scale the resistors to draw the minimum load current required for proper operation. Transient Response and 3.3V to 2.5V or 2.5V to 1.8V Conversion TS5218 has excellent transient response to variations in input voltage and load current. The device have been designed to respond quickly to load current variations and input voltage variations. Large output capacitors are not required to obtain this performance. A standard 10uF output capacitor, preferably tantalum, is all that is required. Larger values help to improve performance even further. By virtue of its low dropout voltage, this device does not saturate into dropout as readily as similar NPN base designs. When converting from 3.3V to 2.5V or 2.5V to 1.8V, the NPN based regulators are already operating in dropout, with typical dropout requirements of 1.2V or greater,. To convert down to 2.5V or 1.8V without operating in dropout, NPN based regulators require an input voltage of 3.7V at the very least. The TS5218 regulator will provide excellent performance with an input as low as 3.0V or 2.5V respectively. This gives the PNP based regulators a distinct advantage over older, NPN based linear regulators. 4/7 Version: A09 TS5218 800mA Ultra Low Dropout Voltage Regulator with Enable Electrical Characteristics Curve Figure 1. Ground Pin Current vs. Input Voltage Figure 2. Ground Current vs. Output Current Figure 3. Dropout Voltage vs. Output Current Figure 4. Short Circuit Current vs. Input Voltage Figure 5. Ripple Rejection vs. Frequency Figure 6. Ripple Rejection vs. Frequency 5/7 Version: A09 TS5218 800mA Ultra Low Dropout Voltage Regulator with Enable TDFN 3x3 Mechanical Drawing DIM A A1 A3 b D D1 E E2 e K L H 6/7 TDFN 3x3 DIMENSION MILLIMETERS INCHES MIN MAX MIN MAX. 0.65 0.85 0.026 0.034 0.00 0.05 0.000 0.002 0.15 0.25 0.006 0.010 0.20 0.30 0.008 0.012 2.90 3.10 0.114 0.122 2.20 2.30 0.086 0.090 2.90 3.10 0.114 0.122 1.49 1.59 0.058 0.063 0.625 0.675 0.025 0.027 0.25 0.35 0.010 0.014 0.35 0.45 0.014 0.017 0.61 0.71 0.024 0.028 Version: A09 TS5218 800mA Ultra Low Dropout Voltage Regulator with Enable Notice Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, to any intellectual property rights is granted by this document. Except as provided in TSC’s terms and conditions of sale for such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of TSC products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify TSC for any damages resulting from such improper use or sale. 7/7 Version: A09