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 Ordering Information 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 Part No. Operating Temp. (Junction) TS39100CWxx SOT-223 TS39100CPxx TS39101CSxx Package TO-252 o -40 ~ +125 C SOP-8 TS39102CS TO-252-5L TS39103CP5xx 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 High efficiency linear power supplies LDO linear regulator for PC add-in cards High efficiency post regulator for switching supply TM PowerPC power supplies Low-voltage microcontrollers and digital logic Multimedia and PC processor supplies SMPS post regulator Absolute Maximum Rating (Note 1) Supply Voltage Vin -20V ~ +20 V Enable Voltage Ven +20 V Storage Temperature Range TSTG -65 ~ +150 o Lead Soldering Temperature (260 C) 5 ESD TS39100/1/2/3 (Note 3) 1-10 2004/06 rev. E o C S Operating Rating (Note 2) Operation Input Voltage Vin (operate) +2.25 ~ +16 V Operation Enable Voltage Ven (operate) +2.25 ~ +16 V Power Dissipation (Note 4) PD Internally Limited Operating Junction Temperature Range TJ -40 ~ +125 W o C Electrical Characteristics Vin = Vout + 1V, Venable= 2.25V, Tj = 25 oC, unless otherwise specified. Parameter Conditions Min Typ Max Vout 1.010|Vo| Output Voltage IL=10mA 0.990|Vo| Output Voltage 10mA ≤ IL ≤ 1.0A, 0.980|Vo| Unit 1.020|Vo| V Vo+1V ≤ Vin ≤ 8V Line Regulation IL=10mA, Vo+1V ≤Vin≤ 16V -- 0.05 0.5 % Load Regulation Vin=Vout+1V, 10mA≤IL≤1A -- 0.2 1.0 % -- 40 100 ppm/ oC IL=100mA -- 100 250 IL=500mA -- 275 IL=750mA -- 350 500 IL=1.0A -- 400 630 IL=100mA -- 0.7 -- IL=500mA -- 4.0 -- IL=750mA -- 7.0 -- IL=1.0A -- 12.0 20 -- 1.8 2.5 0.980|Vo| 1.24 1.020|Vo| Output Voltage Temp. Coefficient Dropout Voltage (Note 5) Quiescent Current (Note 6) Current Limited ∆Vout= -1% Vin=Vout+1V Vout=0, Vin=Vout+1V mV mA A Reference (TS39102) Reference Voltage Reference Voltage (Note 7) Adjust Pin Bias Current Reference Voltage Temp. Coefficient (Note 8) Adjust Pin Bias Current Temp. 0.970|Vo| 1.030|Vo| V -- 40 120 nA -- 20 -- ppm/ oC -- 0.1 -- nA/ oC Coefficient Flag Output (TS39101) Output Leakage Current VOH=16V -- -- 2 uA Output Low Voltage (Note 9) Vin=0.9 * Vout, IOL=250uA -- -- 400 mV Upper Threshold Voltage % of Vout -- -- 99 % Lower Threshold Voltage % of Vout 93 -- -- % -- 1 -- % Low (OFF) -- -- 0.8 V High (ON) 2.25 -- -- Ven=2.25V -- -- 75 Ven=0.8V -- -- 4 Hysteresis Enable Input (TS39101 / 2 / 3) Input Logic Voltage Enable Pin Input Current TS39100/1/2/3 2-10 2004/06 rev. E uA Thermal Performance Condition Package type Typ Thermal Resistance SOT-223 15 Junction to Ambient SOP-8 20 TO-252 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, 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, Pd(max) = (Tj(max) – Ta) / Θja. 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 TS39102 TS39103 1 1 1 Pin Pin Configuration Description Enable (input): TTL/COMS compatible Enable input. Logic high is enable; logic low or open is shutdown 1 2 2 2 Input 2 5,6,7,8 5,6,7,8 3 Ground 3 3 3 4 Output Flag 4 (fixed output voltage) 5 Feed Back 4 (adjustable voltage) 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. 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 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 power systems and as high efficiency noise filters in An input capacitor of 1uF or greater is recommended post NPN when the device is more than 4” away from the bulk transistor design, where the base to emitter voltage AC supply capacitance or when the supply is a battery. drop and collector to emitter saturation voltage limit the Small, surface mount, ceramic chip cpapcitors can be minimum dropout voltage, dropout performance of the used for bypassing. Larger values will help to improve PNP output of these devices is limited only by low Vce ripple rejection by bypassing the input to the regulator, saturation voltage. further improving the integrity of the output voltage. The TS39100/1/2/3 series is fully protected from Minimum Load Current regulator applications. Unlike normal 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 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 even when the input voltage spikes above and below regulation. nominal. The output structure of these regulators allows Adjustable Regulator Design voltages in excess of the desired output voltage to be applied without reverse current flow. The adjustable regulator versions (TS39102) is allow to programming the output voltage anywhere between Output Capacitor Requirement 1.25 and the 16V maximum operating rating of the The TS39100/1/2/3 series requires an output capacitor family. 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 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: R1 = R2 * [(Vout / 1.24) – 1] 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. TS39100/1/2/3 6-10 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. 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 Enable Input TS39101/2/3 versions feature an active-high enable user. As under: (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, Θjc (junction to case) and Θca (case to ambient). Using the power SOP-8 reduces Θca, the total thermal resistance, Θja (junction to ambient) is the limiting factor in calculating the maximum power dissipation capability of the device. Typically, the power SOP-8 have a Θjc of 20oC/W dramatically , this is significantly lower than the standard SOP-8 which is typically 75oC/W. Θca 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 C J K D F G H 0.835 6.700 1.035 7.300 0.032 0.263 0.041 0.287 I J K 0.250 10° 1.550 0.355 16° 1.800 0.010 10° 0.061 0.014 16° 0.071 DIM I H A B C D E F 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 G E TO-252 Mechanical Drawing E J A F I B G D TS39100/1/2/3 C H 9-10 A TO-252 DIMENSION MILLIMETERS INCHES MIN MAX MIN MAX 6.570 6.840 0.259 0.269 B C D E F G H I J 9.250 0.550 2.560 2.300 0.490 1.460 0.520 5.340 1.460 DIM 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 2004/06 rev. E 0.409 0.028 0.105 0.094 0.022 0.062 0.022 0.219 0.065 SOP-8 Mechanical Drawing A DIM 9 16 B 1 P 8 G R C D M F K A B C D F G K M P R 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 TO-252-5L Mechanical Drawing DIM TS39100/1/2/3 10-10 TO-252-5L DIMENSION MILLIMETERS INCHES A B C D E MIN MAX 6.350 6.730 9.080 10.44 0.460 0.640 1.27BSC 2.190 2.380 MIN MAX 0.2509 0.265 0.357 0.411 0.018 0.025 0.050BSC 0.086 0.094 F G H I J 0.460 1.400 0.460 5.340 1.520 0.018 0.055 0.018 0.210 0.060 0.570 1.780 0.570 5.550 2.030 2004/06 rev. E 0.022 0.070 0.022 0.219 0.080