SM1117A 1A Low Dropout Positive Adjustable or Fixed-Mode Regulator Elektronische Bauelemente RoHS Compliant Product A suffix of “-C” specifies halogen free DESCRIPTION SOT-89 The SM1117A is a low dropout at positive adjustable or fixed-mode regulator with minimum 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 3.3V logic supply. SM1117A is also well suited for other applications such as VGA cards. SM1117A is guaranteed to have lower than 1.4V dropout at full load current making it ideal to provide well-regulated outputs of 1.25 to 5.0 with 6.4V to 12V input supply. FEATURES 4 1 E B 3 C D F G H K J REF. 1.4Vmaximum dropout full load current Fast transient response Output current limiting Built-in thermal shutdown Good noise rejection 3-Terminal Adjustable or Fixed 1.5V, 1.8V, 2.5V, 3.3V, 5.0V 2 A A B C D E F Millimeter Min. Max. 4.40 4.60 3.94 4.25 1.40 1.60 2.30 2.60 1.50 1.70 0.89 1.20 L REF. G H J K L Millimeter Min. Max. 0.40 0.58 1.50 TYP 3.00 TYP 0.32 0.52 0.35 0.44 APPLICATIONS PC peripheral Communication MARKING Production A Line Vout 1117 1.5V: -15 1.8V: -18 2.5V: -25 Date Code ADJ (Gnd) Vout 3.3V: -33 5.0V: -50 ADJ: Blank Vin Production B Line Vout GS1117Y 1.5V: 15 1.8V: 18 2.5V: 25 Date Code ADJ (Gnd) Vout 3.3V: 33 5.0V: 50 ADJ: Blank Vin PACKAGE INFORMATION Package MPQ Leader Size SOT-89 1K 7’ inch http://www.SeCoSGmbH.com/ 01-Jun-2011 Rev. B Any changes of specification will not be informed individually. Page 1 of 4 SM1117A 1A Low Dropout Positive Adjustable or Fixed-Mode Regulator Elektronische Bauelemente TYPICAL CIRCUIT BLOCK DIAGRAM PIN DESCRIPTIONS Name I/O Pin# Adj (Gnd) I 1 VOUT O 2 I VIN 3 Description A resistor divider from this pin to the VOUT pin and ground sets the output voltage (Ground only for fixed mode) The output pin of regulator. A min. of 10μF capacitor must be connected from this pin to ground to insure stability. 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 min. 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. ABSOLUTE MAXIMUM RATINGS Parameter Symbol Ratings Unit DC Supply Voltage Vin -0.3 to 12 V Power Dissipation (TA = 25°C) PD Operating & Temperature Range http://www.SeCoSGmbH.com/ 01-Jun-2011 Rev. B TSTG Internally Limited 0~150,-65~150 °C Any changes of specification will not be informed individually. Page 2 of 4 SM1117A 1A Low Dropout Positive Adjustable or Fixed-Mode Regulator Elektronische Bauelemente ELECTRICAL CHARACTERISTICS Parameter Reference Voltage Output Voltage Line Regulation Test Conditions 1.225 1.25 1.275 V Io=10mA, TJ=25°C, 3.0V≦VIN≦12V 1.47 1.5 1.53 V SM117A-1.8 Io=10mA, TJ=25°C, 3.3V≦VIN≦12V 1.764 1.8 1.836 V SM117A-2.5 Io=10mA, TJ=25°C, 4.0V≦VIN≦12V 2.45 2.5 2.55 V SM117A-3.3 Io=10mA, TJ=25°C, 4.8V≦VIN≦12V 3.235 3.3 3.365 V SM117A-5.0 Io=10mA, TJ=25°C, 6.5V≦VIN≦12V 4.9 5 5.1 V SM117A-XXX Io=10mA, VOUT +1.5V<VIN<12V, TJ=25°C - - 0.2 % VIN=3.3V, Vadj=0, 10mA< Io <1A, TJ=25°C - - 1 % SM117A-1.5 1,2 VIN=3.0V, 0mA<Io<1A, TJ=25°C - 12 15 mV 1,2 VIN=3.3V, 0mA<Io<1A, TJ=25°C - 15 18 mV SM117A-2.5 1,2 VIN=4.0V, 0mA<Io<1A, TJ=25°C - 20 25 mV SM117A-3.3 1,2 VIN=5.0V, 0mA<Io<1A, TJ=25°C - 26 33 mV SM117A-5.0 1,2 VIN=8.0V, 0mA<Io <1A, TJ=25°C - 40 50 mV - 1.3 1.4 V 1.1 - - A - 5 10 mA - 0.008 0.04 %W - 60 70 dB - 0.5 - % - 300 - °C/W - 100 - °C/W SM117A-1.8 1,2 Io=1A, (ΔVout=0.1% Vout) Current Limit SM117A-XXX VIN – VOUT =5V Minimum Load Current Adjustable model Temperature Stability Unit SM1117A-1.5 SM117A-XXX Ripple Rejection Max Io=10mA, TJ=25°C, (VIN - VOUT )=1.5V Dropout Voltage (VIN-VOUT) Thermal Regulation Typ. SM1117A-ADJ SM117A-ADJ Load Regulation Min. VIN=5V TA=25°C, 30ms pulse F=120Hz, COUT=25μF Tantalum, IOUT=1A SM117AXXX VIN=VOUT+3V Io=10mA θJA Thermal Resistance Junction-to-Ambient (No heat sink ;No air flow) θJC Thermal Resistance Control Circuitry/Power Transistor 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. 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. 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-2011 Rev. B Any changes of specification will not be informed individually. Page 3 of 4 SM1117A Elektronische Bauelemente 1A Low Dropout Positive Adjustable or Fixed-Mode Regulator CHARACTERISTIC CURVES http://www.SeCoSGmbH.com/ 01-Jun-2011 Rev. B Any changes of specification will not be informed individually. Page 4 of 4