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SMLM317L 100mA Adjustable Elektronische Bauelemente RoHS Compliant Product Voltage Regulator Description The SMLM317L is a monolithic integral circuit, designed for use as positive adjustable voltage regulator. It is designed to supply unit 100mA of load current with an output voltage adjustable over a 1.25V to 37V range. SOT-89 Features * Thermal Overload Protection * Floating Operation For High Voltage Applications * Short Circuit Protection * Output Voltage Adjustable From 1.25V To 37V * Output Transistor Save Area Compensation * Output Current In Excess Of 100mA REF. A B C D E F Millimeter Min. Max. 4.4 4.6 4.05 4.25 1.50 1.70 1.30 1.50 2.40 2.60 0.89 1.20 REF. G H I J K L M Millimeter Min. Max. 3.00 REF. 1.50 REF. 0.40 0.52 1.40 1.60 0.35 0.41 5 TYP. 0.70 REF. Test Circuit SMLM317L Block Diagram http://www.SeCoSGmbH.com/ Any changing of specification will not be informed individual 01-Jun-2002 Rev. A Page 1 of 3 SMLM317L Elektronische Bauelemente o 100mA Adjustable Voltage Regulator Absolute Maximum Ratings at Ta=25 C Parameter Input-Output Voltage Difference Junction Temperature Power Dissipation Storage Temperature Range Operating Juction Temperature Symbol VIN-VOUT TJ PD TSTR TOPR Ratings 40 +125 625 0~+70 -40~+150 Unit V o C mW o o C C Note: 1. Absolute max. ratings are those values beyond witch the device could be permanently demaged. Absolute max. ratings are stress ratings only and functional device operation is not implied. o 2. The device is guaranteed to meet performance specification within 0 C~70oC operating temperature range and assured by design o o from -20 C~85 C. Electrical Characteristics (VIN-VOUT=5V, 0oC TJ 125oC, IO=40mA, unless otherwise specified) Parameter Line Regulation Symbol REGLINE Test Conditions VIN -VOUT=3~40V IO<20mA IO=5~100mA VOUT 5V IO=5~100mA VOUT 5V TJ=25 : 0: 0: 0: TJ TJ TJ 125 : 125 : 125 : TJ=25 : TJ=25 : Min VIN -VOUT=3~40V IO=5~100mA, PD < 625mW VIN -VOUT=3~40V IO=5~100mA, PD < 625mW VIN -VOUT=40V VIN -VOUT=3~13V VIN -VOUT=40V f=10Hz ~ 10KHz, TJ=25 : TJ=25 : , f=120Hz CADJ=0 CADJ=10uF 1.2 100 25 66 Typ 0.01 0.02 5 20 0.1 0.3 50 0.2 1.25 0.7 3.5 200 50 0.003 65 80 Max 0.04 0.07 25 70 0.5 1.5 100 5 1.3 5 Unit %/V %/V mV %/VOUT Load Regulation REGLOAD Adjustable Pin Current Adjustable Pin Current Change Reference Voltage Output Voltage Temperature Stability Minimum Load Current Maximum Output Current Output Noise Voltage (% of VOUT) Ripple Rejection IADJ IADJ VREF VOUT/VOUT ILOAD(Min) IOUT(Max) eN RR A A V % mA mA %/VOUT dB Characteristics Curve http://www.SeCoSGmbH.com/ Any changing of specification will not be informed individual 01-Jun-2002 Rev. A Page 2 of 3 SMLM317L Elektronische Bauelemente 100mA Adjustable Voltage Regulator Application Information and Circuits The SMLM317L provides an internal reference voltage of 1.25V between the output and adjustments terminals.This is used to set a constant current flow across an external resistor driver, giving an output voltage VOUT of: VOUT=VREF*(1+R2/R1)+IADJ*R2. The device is designed to min. the term IADJ (100uA max) and to maintain it very constant with line and load charges. Usually, the error term IADJ*R2 can be neglected. To obtain the previous requirement, all the regulator quiescent current is returned to the output terminal, imposing a min. load current condition. If the load is insufficient, the output voltage will rise. The SMLM317L is a floating regulator, input-output differential voltage,supplies of very high voltage with respect to ground can be regulated as long as the max. input-output differential is not exceeded. Furthemore, programmable regulators are easily obtainable and, by connecting a fixed resistor between the adjustment and output, the device can be used as a precision current regulator. 1 SMLM317L 4 2,3,6,7 1 SMLM317L 4 2,3, 6,7 Fig 1. Basic Adjustable Regulator Fig 2. Voltage Regulator with Protection Diodes 1 SMLM317L 4 2,3,6,7 1 SMLM317L 4 2,3,6,7 Fig 3. Slow Turn-On 15V Regulator Fig 4. 5V Electronic Shut-Down Regulator 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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