SE1147-50 1A Low Dropout Positive Regulator Elektronische Bauelemente RoHS Compliant Product Description The SE1147-50 is a low dropout at positive adjustable or fixed-mode regulator with min. of 1A output current capability. The product is specifically designed to provide well-regulated supply for low voltage IC applications such as high-speed bus termination and low current logic supply. SE1147-50 is also well suited for other applications such as VGA cards. SE1147-50 is guaranteed to have lower than 1.4V dropout at full load current making it ideal to provide well regulated outputs 5V with 6.4V to 18V input supply Features * 1.4V Max. Dropout Full Load Current * Output Current Limiting * Good Noise Rejection * Fast Transient Response * Built-in Thermal Shutdown REF. A b c D E L4 L5 Millimeter Min. Max. 4.40 4.80 0.76 1.00 0.36 0.50 8.60 9.00 9.80 10.4 14.7 15.3 6.20 6.60 REF. c1 b1 L e L1 Ø A1 Millimeter Min. Max. 1.25 1.45 1.17 1.47 13.25 14.25 2.54 REF. 2.60 2.89 3.71 3.96 2.60 2.80 Applications * PC Peripheral * Communication Typical Circuit http://www.SeCoSGmbH.com/ 01-Jun-2002 Rev. A Block Diagram Any changing of specification will not be informed individual Page 1 of 3 SE1147-50 1A Low Dropout Elektronische Bauelemente Positive Regulator Pin Descriptions Name I/O Pin# Vin I 1 Gnd I 2 Vout O 3 Function The input pin of regulator .Typically a large storage capacitor is connected from this pin to ground to insure that the input voltage does not sag below the minimum dropout voltage during the load transient response .This pin must always be 1.3V higher than Vout in order for the device to regulate properly. Ground pin The output of the regulator, A minimum of 10uF capacitor must be connected from this pin to ground to insure stability. Absolute Maximum Ratings Parameter Ratings Symbol DC Supply Voltage VIN Power Dissipation PD Storage Temperature Range TST Operating Juction Temperature Range Unit -0.3 to 12 V Internally Limited TOP o C -65~+150 o C 0~+150 Electrical Characteristics Parameter Conditions Min. Typ. Max. Unit 4.975 5.000 5.050 V Output Voltage Vout Io=10mA,Tj=25 ,6.5V Vin 12V Line Regulation Io=10mA,6.5V<Vin<12V,Tj=25 - - 0.2 % Load Regulation REGLINE REGLOAD Vin=8V,0mA<Io<1A,TJ=25 - - 25 mV Dropout Voltage (VIN-VOUT) VDROPOUT Io=1A,( Vout=0.1% Vout) - 1.3 1.4 V Current Limit Io Vin-Vout=5V 1.1 - - A Minimum Load Current IQ 0 - 5 10 mA - 0.008 - 60 Thermal Regulation Ripple Rejection Tj 125 TA=25 ,30ms pulse (Note 1,2) 0.04 %/W F=120HZ,COUT=25uF Tantalum, IOUT =1A VIN=VOUT +3V 70 dB Temperature Stability IO=10mA 0.5 % JA Thermal Resistance Junction–to-Ambient(No 85 /W heat sink ;No air flow) JC Thermal Resistance Control Circuitry/Power Transistor 0.65/2.7 /W Junction-to-Case Note 1: See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant junction Temperature by low duty cycle pulse testing .Load regulation is measured at the output lead =1/18” from the package. Note 2: Line and load regulation are guaranteed up to the maximum power dissipation of 15W.Power dissipation is determined by the difference between input and output and the output current .Guaranteed maximum power dissipation will not be available over the full input/output range. Note 3: Quiescent current is defined as the minimum output current required in maintaining regulation .At 12V input/output differential the device is guaranteed to regulate if the output current is greater than 10mA. http://www.SeCoSGmbH.com/ 01-Jun-2002 Rev. A Any changing of specification will not be informed individual Page 2 of 3 SE1147-50 Elektronische Bauelemente 1A Low Dropout Positive Regulator Characteristics Curve h tp://www.SeCoSGmbH.com/ 01-Jun-2002 Rev. A Any changing of specification will not be informed individual Page 3 of 3