TS39100

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, 10mA≤IL≤1A ∆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, 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 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 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] 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 2Ω. This will improve transient response as well as promote stability. Ultra low ESR capacitors (