SE1117A SECOS | Alldatasheet
Document overview
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Technical content
Features
- 1.4V Max. Dropout Full Load Current * Output Current Limiting * Good Noise Rejection * Fast Transient Response * Built-in Thermal Shutdown 01-Jun-2002 Rev. A Page 1 of 4 http://www.SeCoSGmbH.com/ Any changing of specification will not be informed individual R o H S C o m p l i a n t P r o d u c t Typical Circuit A 4.40 4.80 c1 1.25 1.45 b 0.76 1.00 b1 1.17 1.47 c 0.36 0.50 L 13.25 14.25 D 8.60 9.00 e 2.54 REF. E 9.80 10.4 L1 2.60 2.89 L4 14.7 15.3 Ø 3.71 3.96 L5 6.20 6.60 A1 2.60 2.80 Millimeter Millimeter
Operating Juction Temperature Range Parameter Symbol Ratings Unit VVIN -0.3 to 12 0~+150 -65~+150 Absolute Maximum Ratings PD TST TOP C o C o Internally Limited Pin Descriptions Elektronische Bauelemente http://www.SeCoSGmbH.com/ Any changing of specification will not be informed individual 01-Jun-2002 Rev. A Page 2 of 4 FunctionPin#I/OName Adj (GND) I 1 A resistor divider from this pin to the Vout pin and ground sets the output voltage (Ground only for fixed mode) Vout O 2 The output of the regulator. A minimum of 10uF capacitor must be connected from this pin to ground to insure stability. Vin I 3 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. SE1117A 1A Low Dropout Positive Adjustable or Fixed-Mode Regulator Block Diagram
01-Jun-2002 Rev. A Page 3 of 4 h tp://www.SeCoSGmbH.com/ Any changing of specification will not be informed individual Elektronische Bauelemente SE1117A 1A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Electrical Characteristics
PARAMETER CONDITIONS MIN TYP MAX UNIT SE1117A-1.5 Io=10mA,Tj=25,3V Vin12V 1.470 1.500 1.530 V SE1117A-2.5 Io=10mA,Tj=25,4V Vin12V 2.450 2.500 2.550 V Output Voltage Line Regulation SE1117A-XXX Io=10mA,Vout+1.5V<Vin<12V,Tj=25 - - 0.2 % SE1117AADJ Vin=3.3V,Vadj=0,0mA<Io<1A,Tj=25(Note 1,2) - - 1 % SE1117A-1.5 Vin=3V,0mA<Io<1A,TJ=25 (Note 1,2) - 12 15 mV SE1117A-1.8 Vin=3.3V,0mA<Io<1A,TJ=25 (Note 1,2) - 15 18 mV SE1117A-2.5 Vin=4V,0mA<Io<1A,TJ=25 (Note 1,2) - 20 25 mV SE1117A-3.3 Vin=5V,0mA<Io<1A,TJ=25 (Note 1,2) - 26 33 mV Load Regulation SE1117A-5.0 Vin=8V,0mA<Io<1A,TJ=25 (Note 1,2) - 40 50 mV Dropout Voltage (VIN-VOUT) SE1117AADJ/1.5/ Reference Voltage SE1117AADJ 1.225 1.250 1.275 VIo=10mA,Tj=25,(Vin-Vout )=1.5V Current Limit SE1117AADJ/1.5/ Minimum Load Current SE1117A-XXX 0 Tj125 - 5 10 mA Thermal Regulation TA=25,30ms pulse - 0.008 0.04 %/W F=120HZ,COUT=25uF Tantalum, IOUT=1A Ripple Rejection SE1117A-XXX VIN=VOUT+3V - 60 70 dB Temperature Stability IO=10mA - 0.5 - % JA Thermal Resistance Junction– to-Ambient(No heat sink ;No air flow) - 85 - /w JC Thermal Resistance Junction-to-Case Control Circuitry/Power Transistor - 0.65/2.7 - /w 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.
01-Jun-2002 Rev. A Page 4 of 4 h tp://www.SeCoSGmbH.com/ Any changing of specification will not be informed individual Elektronische Bauelemente Characteristics Curve SE1117A 1A Low Dropout Positive Adjustable or Fixed-Mode Regulator