TS39304

TS39301/2/3/4 3A Ultra Low Dropout Positive Voltage Regulator Low Dropout Voltage 0.4V (typ.) Output Current 3A Low Quiescent Current General Description The TS39301/2/3/4 a re 3A ultra low dropout linear voltage re gulators that provide low voltage, high current outpu t w ith a minimum o f exte rnal components. The TS39301/2/3/4 offers extremely low dropout (typically 400mV at 3A) and low quiescent current (typically 36mA at 3A ). The TS39301/2/3/4 is ideal for PC add-in cards that need to convert from standard 3.3V to 2.5V or 2 .5V to 1.8V. A guaranteed maximum dropout voltage o f 500mV over all o perating conditions allows the TS39301/2/3/4 to p rovide 2.5V from a supply as low as 3V, and 1.8V fro m a supply as low as 2.5V. The TS39301/2/3 /4 also has fast transient response for heavy switching applications. The device requires only 47uF of output capacitor to maintain stability and achieve fast transient response. On the TS39301/2/3/4, the enable pin may be tied to input voltage if it is not required fo r enable control. This series are offe red in 5 -pin TO -220, TO -263 package. Features            Dropout voltage typically 0.4V @Io=3A Output current up to 3A Low ground current Current lim iting and Thermal shutdown Extremely fast transient response Reversed leakage protection Reverse battery pro tection TTL/CMOS compatible enable pin Error flag output (TS39301 only) Adjustable version (TS39302 only) Output voltage sense (TS39303 / 4 only) Ordering Information Part No. T S3 9 3 0 1 CZ 5 x x T S3 9 3 0 2 CZ 5 T S3 9 3 0 3 CZ 5 x x T S3 9 3 0 4 CZ 5 x x T S 3 9 3 0 1 C M5 x x T S 3 9 3 0 2 C M5 T S 3 9 3 0 3 C M5 x x T S 3 9 3 0 4 C M5 x x Note: Whe re xx denotes voltage option, available are 50 = 5.0V 33 = 3.3V 25 = 2.5V 18 = 1.8V -40 ~ +125 C o Operat ing Temp. Package TO-220-5L TO-263-5L Applications    Battery power equipment LDO linear regulato r fo r PC add-in cards PowerPC TM    High efficiency linear power supplies High efficiency post regulato r fo r switching supply Low-voltage microcontrollers and digita l logic SMPS post regula tor power supplies  Multimedia and PC p rocessor supplies  TS39301/2/3/4 1 -7 2005/12 rev. A Absolute Maximum Rating (Note 1) Supply Voltage Enable Voltage Storage Temperatu re Range Lead Soldering Temperature (260 C) ESD o Vin Ve n 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 Tempera ture Range Vin (operate ) Ven (operate) PD TJ +2.5 ~ +16 +16 Internally Limited -40 ~ +125 V V W o C Electrical Characteristics (Vin = Vou t + 1V , Venable= 2.4V, Tj = 25 C, unless othe rwis e specified.) o Parameter Output Voltage Output Voltage Line Regulation Load Regulation Output Voltage Temp. Coefficient Conditions IL=10mA 10mA ≤ IL ≤ 3A, Vo+1V ≤ Vin ≤ 8V IL=10mA, Vo+1V ≤Vin≤ 8V Vin=Vout+1V, 10mA≤IL≤3A (Note 5) IL=100mA Min 0.990|Vo| 0.980|Vo| ------------- Typ 5.0 / 3 .3 2.5 / 1 .8 0.06 0.2 40 65 185 250 400 6 10 17 45 4.5 Max 1.010|Vo| 1.020|Vo| 0.5 1.0 100 200 --550 10 20 ---- Unit V % % p p m/ C o Dropout Voltage (Note 6 & 8 ) ΔVout= -1% IL=750mA IL=1.5A IL=3.0A IL=100mA mV Quiescent Current (No te 7) Vin=Vout+1V IL=750mA IL=1.5A IL=3.0A mA Current L imited Vout=0, Vin=Vout+1V A Enable Input (TS39301/2/3/4) Input Logic Voltage Low (OFF) High (ON ) VEN=2.25V VEN =0.8V -2.25 --------0.8 -75 4 20 V Enable Pin Input Curren t Shutdown Output Cu rrent (Note 8) µA µA Adjustable Out put (TS39302) Reference Voltage 0.980|Vo| 1.24 1.020|Vo| V TS39301/2/3/4 2 -7 2005/12 rev. A Electrical Characteristics Flag Output ( TS39301) Output Leakage Current Output Low Voltage (No te 9) Upper Threshold Voltage Lower Threshold Voltage Hysteresis VOH=16V Vin=2.5V, IOL=250uA % o f Vo u t % o f Vo u t ---93 -----1 2 400 99 --µA mV % % % Thermal Performance Condition Thermal Resistance Junction to Case Package type TO-220-5L TO-263-5L Typ 2 2 Unit o C/W Note 1. Exceeding the absolute maximum ratings may be da maged the device. Note 2. The device is not guaranteed to function outside its o perating ra ting. Note 3. Devices are ESD sensitive . Handling p recautions rec ommended. Note 4. Pd(max) = (Tj(max) - Ta) + Өja, where Өja depends upon the printed circuit layout. See ”Applications Informa tion”. o Note 5. Output voltage temperatu re coefficient is ΔVout (w orst case) + (Tj(max) – Tj(min)) where T j(max) is +125 C and o Tj(min) is -40 C. Note 6. Vdrop = V in - Vou t when Vout decreases to 99% of its nominal output voltage with V in = Vout + 1. For output voltages below 2.5V, dropout voltage is the input-to-output v oltage diffe rential w ith the m inimum input voltage being 2.5V. M inimum input opera ting voltage is 2.5V Note 7. Ignd is the quiescent current. Iin = Ignd + Iout Note 8. Ven