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SE1147-50
1A Low Dropout
Elektronische Bauelemente
RoHS Compliant Product
Positive Regulator
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
REF. A b c D E L4 L5
* Output Current Limiting * Good Noise Rejection * Fast Transient Response * Built-in Thermal Shutdown
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 O 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
Block Diagram
http://www.SeCoSGmbH.com/
Any changing of specification will not be informed individual
01-Jun-2002 Rev. A
Page 1 of 3
SE1147-50
Elektronische Bauelemente
1A Low Dropout Positive Regulator
Pin Descriptions
Name
Vin Gnd Vout
I/O
I I O
Pin#
1 2 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
DC Supply Voltage Power Dissipation Storage Temperature Range Operating Juction Temperature Range
Symbol
VIN PD TST TOP
Ratings
-0.3 to 12
Internally Limited -65~+150 0~+150
Unit
V
o o
C
C
Electrical Characteristics
Parameter
Output Voltage Line Regulation Load Regulation Dropout Voltage (VIN-VOUT) Current Limit Minimum Load Current Thermal Regulation Ripple Rejection Vout
Conditions
Io=10mA,Tj=25 : ,6.5V Vin 12V Io=10mA,6.5VMin. 4.975 1.1 -
Typ. 5.000 1.3 5 0.008 60
Max. Unit 5.050 0.2 25 1.4 10 V % mV V A mA
REGLINE REGLOAD VDROPOUT Io IQ
TA=25 : ,30ms pulse F=120HZ,COUT=25uF Tantalum, IOUT=1A VIN=VOUT+3V
0.04 %/W 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/
Any changing of specification will not be informed individual
01-Jun-2002 Rev. A
Page 2 of 3
SE1147-50
Elektronische Bauelemente
1A Low Dropout Positive Regulator
Characteristics Curve
h tp://www.SeCoSGmbH.com/
Any changing of specification will not be informed individual
01-Jun-2002 Rev. A
Page 3 of 3

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