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| TS39100/1/2/3 1.0A Ultra Low Dropout Positive Voltage Regulator Low Dropout Voltage 0.4V (typ.) Enable Input Control Adjustable Output Error Flag Detection General Description The TS39100/1/2/3 series are 1A ultra low dropout linear voltage regulators that provide low voltage, high current output from an extremely small package. These regulator offers extremely low dropout (typically 400mV at 1A) and very low ground current (typically 12mA at 1A). The TS39100/1/2/3 series are 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 and error flag which signals whenever the output falls out of regulation. On the TS39101/2/3, the enable pin may be tied to Vin if it is not required for enable control. This series are offered in 3-pin SOT-223 (TS39100), 8-pin SOP (TS39101/2) and 5-pin TO-252 (TS39103) package. Features Dropout voltage typically 0.4V @Io=1.0A Output current up to 1.0A Low ground current Output voltage trimmed before assembly Extremely fast transient response Reversed leakage protection Reverse battery protection Error flag signals output out of regulation Internal current limit Thermal shutdown protection Ordering Information Part No. TS39100CWxx TS39100CPxx TS39101CSxx TS39102CS TS39103CP5xx -40 ~ +125 C o Operating Temp. (Junction) Package SOT-223 TO-252 SOP-8 TO-252-5L Note: Where xx denotes voltage option, available are 5.0V, 3.3V, 2.5V, 1.8V and 1.5V. Leave blank for adjustable version (only TS39103). Contact to factory for addition output voltage option. Applications Battery power equipment LDO linear regulator for PC add-in cards PowerPC TM High efficiency linear power supplies High efficiency post regulator for switching supply Low-voltage microcontrollers and digital logic SMPS post regulator power supplies Multimedia and PC processor supplies 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 TS39100/1/2/3 1-10 2004/06 rev. E 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 Electrical Characteristics Vin = Vout + 1V, Venable= 2.25V, Tj = 25 oC, unless otherwise specified. Parameter Output Voltage Output Voltage Line Regulation Load Regulation Output Voltage Temp. Coefficient Dropout Voltage (Note 5) Conditions IL=10mA 10mA IL 1.0A, Vo+1V Vin 8V IL=10mA, Vo+1V Vin 16V Vin=Vout+1V, 10mAIL1A Vout= -1% IL=100mA IL=500mA IL=750mA IL=1.0A Min 0.990|Vo| 0.980|Vo| ------------- Typ Vout Max 1.010|Vo| 1.020|Vo| Unit V % % ppm/ oC mV 0.05 0.2 40 100 275 350 400 0.7 4.0 7.0 12.0 1.8 0.5 1.0 100 250 500 630 ---20 2.5 Quiescent Current (Note 6) Vin=Vout+1V IL=100mA IL=500mA IL=750mA IL=1.0A mA Current Limited Vout=0, Vin=Vout+1V A Reference (TS39102) Reference Voltage Reference Voltage Adjust Pin Bias Current Reference Voltage Temp. Coefficient Adjust Pin Bias Current Temp. Coefficient (Note 8) (Note 7) 0.980|Vo| 0.970|Vo| ---40 20 0.1 1.24 1.020|Vo| 1.030|Vo| 120 --V nA ppm/ oC nA/ oC Flag Output (TS39101) Output Leakage Current Output Low Voltage (Note 9) Upper Threshold Voltage Lower Threshold Voltage Hysteresis VOH=16V Vin=0.9 * Vout, IOL=250uA % of Vout % of Vout ---93 -----1 2 400 99 --uA mV % % % Enable Input (TS39101 / 2 / 3) Input Logic Voltage Enable Pin Input Current Low (OFF) High (ON) Ven=2.25V Ven=0.8V -2.25 ------0.8 -75 4 uA V TS39100/1/2/3 2-10 2004/06 rev. E Thermal Performance Condition Thermal Resistance Junction to Ambient Package type SOT-223 SOP-8 TO-252 Typ 15 20 25 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: 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, 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, Pd(max) = (Tj(max) - Ta) / ja. 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, Iin = Ignd + Iout. Note 7: Vref Vout (Vin - 1V), 2.25V Vin 16V, 10mA IL 1.0A. Note 8: Output voltage temperature coefficient is Vout (worse cast) / (Tj(max) - Tj(min)) where is Tj(max) +125 oC and Tj(min) is 0 oC. Note 9: For adjustable device and fiexed device with Vout > 2.25V. Block Diagram TS39100 TS39100/1/2/3 3-10 2004/06 rev. E Block Diagram TS39101 & TS39102 & TS39103 * Feedback network is fixed output versions only (TS39101CSxx & TS39103CP5xx ) ** Adjustable output version only (TS39102CS & TS39103CP5) TS39100/1/2/3 4-10 2004/06 rev. E Pin Assignment Pin No. TS39100 TS39101 1 TS39102 1 TS39103 1 Pin Configuration Pin Description Enable (input): TTL/COMS compatible input. Logic high is enable; logic low or open is shutdown Unregulated input: +26V maximum supply Ground: Ground pin and TAB/heatsink are internally connected. Regulator output Error Flag (output): Open-collector output. Active low indicates an output fault condition, if no used, leave open. Adjustment input: Feedback input. Connect to resistive voltage-divider network. Enable 1 2 3 2 5,6,7,8 3 4 2 5,6,7,8 3 2 3 4 Input Ground Output Flag (fixed output voltage) 5 4 Feed Back (adjustable voltage) Typical Application Circuit TS39100/1/2/3 5-10 2004/06 rev. E Application Information Application Information The TS39100/1/2/3 series are high performance with low dropout voltage regulator suitable for moderate to high current and voltage regulator application. Its 630mV 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 TS39100/1/2/3 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. 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. 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 cpapcitors 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 TS39100/1/2/3 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 is necessary for proper regulation. Adjustable Regulator Design The adjustable regulator versions (TS39102) is allow 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 1M, because of the very high input impedance and low bias current of the sense comparator, the resistor values are calculated by: R1 = R2 * [(Vout / 1.24) - 1] Output Capacitor Requirement The TS39100/1/2/3 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. TS39100/1/2/3 series 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 2. This will improve transient response as well as promote stability. Ultra low ESR capacitors (<100m), 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 <2. 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. TS39100/1/2/3 6-10 2004/06 rev. E Application Information (continues) Error Flag TS39101 versions feature an Error Flag, which looks at the output voltage and signals an error condition when this voltage drops 5% below its expected value. The error flag is an open-collector output that pulls low under fault conditions. It may sink 10mA. Low output voltage signifies a number of possible problems, including an over-current fault (the device is in current limit) or low input voltage. The flag output is inoperative during over temperature shutdown conditions. A pull-up resistor from error flag to either Vin or Vout is required for proper operation. For information regarding the minimum and maximum values of pull-up resistance, refer the graph as follow: 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 TS39100 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. Power SOP-8 Thermal Characteristics TS39101/2 series' performance is its power SOP-8 package featuring half the thermal resistance of a standard SOP-8 package. Lower thermal resistance means more output current or higher input voltage for a given package size. Lower thermal resistance is achieved by connect the four ground pins with the die attached pad to create a single piece electrical and thermal conductor. This concept have been used by MOSFET production for years, proving very reliable and cost effective for the user. As under: Enable Input TS39101/2/3 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. Transient Response and 3.3V to 2.5V or 2.5V to 1.8V Conversion TS39101/2/3 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. TS39100/1/2/3 7-10 2004/06 rev. E Application Information (continues) Thermal resistance consists of two main elements, jc (junction to case) and ca (case to ambient). Using the power SOP-8 reduces ca, the total thermal resistance, ja (junction to ambient) is the limiting factor in calculating the maximum power dissipation capability of the device. Typically, the power SOP-8 have a jc of 20oC/W dramatically , this is significantly lower than the standard SOP-8 which is typically 75oC/W. ca is reduced because pin 5~8 can be soldered directly to a ground plane which significantly reduces the case to sink and sink to ambient thermal resistance. Power Dissipation From under curves, the minimum area of copper necessary for the par to operate safely can be determined. The maximum allowable temperature rise must be calculated to determine operation along which curve. TS39100/1/2/3 8-10 2004/06 rev. E SOT-223 Mechanical Drawing A B I DIM A B C D E F G H I J K H C J K F G E D SOT-223 DIMENSION MILLIMETERS INCHES MIN MAX MIN MAX 6.350 6.850 0.250 0.270 2.900 3.100 0.114 0.122 3.450 3.750 0.136 0.148 0.595 0.635 0.023 0.025 4.550 4.650 0.179 0.183 2.250 2.350 0.088 0.093 0.835 6.700 0.250 10 1.550 1.035 7.300 0.355 16 1.800 0.032 0.263 0.010 10 0.061 0.041 0.287 0.014 16 0.071 TO-252 Mechanical Drawing J A E F DIM A TO-252 DIMENSION MILLIMETERS INCHES MIN MAX MIN MAX 6.570 6.840 0.259 0.269 9.250 0.550 2.560 2.300 0.490 1.460 0.520 5.340 1.460 10.400 0.700 2.670 2.390 0.570 1.580 0.570 5.550 1.640 0.364 0.022 0.101 0.090 0.019 0.057 0.020 0.210 0.057 0.409 0.028 0.105 0.094 0.022 0.062 0.022 0.219 0.065 I B G D C H B C D E F G H I J TS39100/1/2/3 9-10 2004/06 rev. E SOP-8 Mechanical Drawing A DIM SOP-8 DIMENSION MILLIMETERS INCHES MIN MAX MIN MAX 4.80 5.00 0.189 0.196 3.80 4.00 0.150 0.157 1.35 1.75 0.054 0.068 0.35 0.49 0.014 0.019 0.40 1.25 0.016 0.049 1.27 (typ) 0.05 (typ) 0.10 0.25 0.004 0.009 0o 7o 0o 7o 5.80 6.20 0.229 0.244 0.25 0.50 0.010 0.019 16 9 B P 1 8 G C D K M R F A B C D F G K M P R TO-252-5L Mechanical Drawing DIM A B C D E F G H I J TO-252-5L DIMENSION MILLIMETERS INCHES MIN MAX 6.350 6.730 9.080 10.44 0.460 0.640 1.27BSC 2.190 2.380 0.460 1.400 0.460 5.340 1.520 0.570 1.780 0.570 5.550 2.030 MIN MAX 0.2509 0.265 0.357 0.411 0.018 0.025 0.050BSC 0.086 0.094 0.018 0.055 0.018 0.210 0.060 0.022 0.070 0.022 0.219 0.080 TS39100/1/2/3 10-10 2004/06 rev. E |
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