LM3490IM5-15

LM3490 100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF June 2007 LM3490 100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF General Description The LM3490 is an integrated linear voltage regulator. It features operation from an input as high as 30V and a guaranteed maximum dropout of 1.2V at the full 100 mA load. Standard packaging for the LM3490 is the 5-lead SOT-23 package. A logic-controlled ON/OFF feature makes the LM3490 ideal for powering subsystems ON and OFF as needed. The 5, 12, and 15V members of the LM3490 series are intended as tiny alternatives to industry standard LM78LXX series and similar devices. The 1.2V quasi low dropout of LM3490 series devices makes them a nice fit in many applications where the 2 to 2.5V dropout of LM78LXX series devices precludes their (LM78LXX series devices) use. The LM3490 series features a 3.3V member. The SOT packaging and quasi low dropout features of the LM3490 series converge in this device to provide a very nice, very tiny 3.3V, 100 mA bias supply that regulates directly off the system 5V ±5% power supply. Key Specifications ■ 30V maximum input for operation ■ 1.2V guaranteed maximum dropout over full load and temperature ranges ■ 100 mA guaranteed load current ■ ±5% guaranteed output voltage tolerance over full load and temperature ranges ■ −40 to +125°C junction temperature range for operation Features ■ 3.3, 5, 12, and 15V versions available ■ Logic-controlled ON/OFF ■ Packaged in the tiny 5-lead SOT-23 package Applications ■ ■ ■ ■ Tiny alternative to LM78LXX series and similar devices Tiny 5V±5% to 3.3V, 100 mA converter Post regulator for switching DC/DC converter Bias supply for analog circuits Typical Application Circuit 10007102 Connection Diagram 10007101 Top View SOT-23 Package 5-Lead, Molded-Plastic Small-Outline Transistor (SOT) Package Package Code MF05A(Note 1) © 2007 National Semiconductor Corporation 100071 www.national.com LM3490 Ordering Information Output Voltage (V) 3.3 5.0 12 15 Order Number (Note 2) LM3490IM5-3.3 LM3490IM5X-3.3 LM3490IM5-5.0 LM3490IM5X-5.0 LM3490IM5-12 LM3490IM5X-12 LM3490IM5-15 LM3490IM5X-15 Package Marking (Note 3) L78B L78B L79B L79B L80B L80B L81B L81B Comments 1000 Units on Tape and Reel 3000 Units on Tape and Reel 1000 Units on Tape and Reel 3000 Units on Tape and Reel 1000 Units on Tape and Reel 3000 Units on Tape and Reel 1000 Units on Tape and Reel 3000 Units on Tape and Reel www.national.com 2 LM3490 Absolute Maximum Ratings (Note 4) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage (IN to GND) Voltage ON/OFF to GND Power Dissipation (Note 5) Junction Temp. (TJ) (Note 5) Ambient Storage Temp. 35V 5.5V 400 mW +150°C −65 to +150°C Soldering Time, Temp. (Note 6) Wave Infrared Vapor Phase ESD (Note 7) ON/OFF All Other Pins 4sec., 260°C 10sec., 240°C 75sec., 219°C 1.0kV 2.0kV (Note 4) 30V 0 to 5V −40 to +125°C 300 mW Operating Ratings Maximum Input Voltage (IN to GND) Voltage ON/OFF to GND Junction Temperature (TJ) Maximum Power Dissipation (Note 8) Electrical Characteristics LM3490-3.3, LM3490-5.0 VIN = VNOM + 1.5V unless otherwise noted. Typicals and limits appearing in normal type apply for TA = TJ = 25°C. Limits appearing in boldface type apply over the entire junction temperature range for operation, −40 to +125°C. (Notes 9, 10, 11) Nominal Output Voltage (VNOM) Symbol VOUT Parameter Output Voltage Conditions 1 mA ≤ IOUT ≤ 100 mA 3.30 3.17 3.14 3.43 3.46 7 25 15 40 15 40 9 25 3.3V Typical Limit 5.00 4.80 4.75 5.20 5.25 5.0V Typical Limit Units V V(min) V(min) V(max) V(max) mV mV(max) mV mV(max) ΔVOUT ΔVOUT IGND Line Regulation Load Regulation Ground Pin Current VNOM + 1.5V ≤ VIN ≤ 30V, IOUT = 1 mA 10 mA ≤ IOUT ≤ 100 mA VNOM + 1.5V ≤ VIN ≤ 30V, No Load VON/OFF = 5V VON/OFF = 0V 2 4 0.1 5 0.7 0.9 1.0 2 4 0.1 5 0.7 0.9 1.0 0.9 1.1 1.2 1.1 1.2 150 0.2 0.2 mA mA(max) µA µA(max) V V(max) V(max) V V(max) V(max) µVrms V(max) VIN VOUT Dropout Voltage IOUT = 10 mA IOUT = 100 mA 0.9 en VIL Output Noise Voltage Maximum Low Level Input Voltage at ON/ OFF Minimum High Level Input Voltage at ON/ OFF VIN = 10V, Bandwidth: 10 Hz to 100 kHz 100 VIH 2.0 2.0 V(min) IIL IIH VON/OFF = 0V VON/OFF = 5V 1 −1 1 20 −1 20 µA(max) µA µA(max) 3 www.national.com LM3490 LM3490-12, LM3490-15 VIN = VNOM + 1.5V unless otherwise noted. Typicals and limits appearing in normal type apply for TA = TJ = 25°C. Limits appearing in boldface type apply over the entire junction temperature range for operation, −40 to +125°C. (Notes 9, 10, 11) Nominal Output Voltage (VNOM) Symbol VOUT Parameter Output Voltage Conditions 1 mA ≤ IOUT ≤ 100 mA 12.00 11.52 11.40 12.48 12.60 14 40 36 60 45 75 16 40 12V Typical Limit 15.00 14.40 14.25 15.60 15.75 15V Typical Limit Units V V(min) V(min) V(max) V(max) mV mV(max) mV mV(max) ΔVOUT ΔVOUT IGND Line Regulation Load Regulation VNOM + 1.5V ≤ VIN ≤ 30V, IOUT = 1 mA 10 mA ≤ IOUT ≤ 100 mA Ground Pin Current VNOM + 1.5V ≤ VIN ≤ 30V, No Load VON/OFF = 5V VON/OFF = 0V 2 4 0.1 5 0.7 0.9 1.0 2 4 0.1 5 0.7 0.9 1.0 0.9 1.1 1.2 1.1 1.2 450 0.2 0.2 mA mA(max) µA µA(max) V V(max) V(max) V V(max) V(max) µVrms V(max) VIN VOUT Dropout Voltage IOUT = 10 mA IOUT = 100 mA 0.9 en VIL Output Noise Voltage Maximum Low Level Input Voltage at ON/OFF Minimum High Level Input Voltage at ON/OFF VIN = 10V, Bandwidth: 10 Hz to 100 kHz 360 VIH 2.0 2.0 V(min) IIL IIH VON/OFF = 0V VON/OFF = 5V 1 −1 1 20 −1 20 µA(max) µA µA(max) Note 1: The package code MA05B is internal to National Semiconductor Corporation and indicates a specific version of the SOT-23 package and associated mechanical drawings. Note 2: The suffix “I” indicates the junction temperature range for operation is the industrial temperature range, −40 to +125°C. The suffix “M5” indicates the die is packaged in the 5-lead SOT-23 package. The suffix “X” indicates the devices will be supplied in blocks of 3k units as opposed to blocks of 250 units. Note 3: Because the entire part number does not fit on the SOT-23 package, the SOT-23 package is marked with this code instead of the part number. Note 4: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the Electrical Characteristics tables. Note 5: The Absolute Maximum power dissipation depends on the ambient temperature and can be calculated using P = (TJ - TA)/θJA where TJ is the junction temperature, TA is the ambient temperature, and θJA is the junction-to-ambient thermal resistance. The 400 mW rating results from substituting the Absolute Maximum junction temperature, 150°C, for TJ , 50°C for TA, and 250°C/W for θJA. More power can be safely dissipated at lower ambient temperatures. Less power can be safely dissipated at higher ambient temperatures. The Absolute Maximum power dissipation can be increased by 4 mW for each °C below 50°C ambient. It must be derated by 4 mW for each °C above 50°C ambient. A θJA of 250°C/W represents the worst-case condition of no heat sinking of the 5-lead plastic SOT-23 package. Heat sinking enables the safe dissipation of more power. The LM3490 actively limits its junction temperature to about 150°C. Note 6: Times shown are dwell times. Temperatures shown are dwell temperatures. For detailed information on soldering plastic small-outline packages, refer to the Packaging Databook available from National Semiconductor Corporation. Note 7: For testing purposes, ESD was applied using the human-body model, a 100 pF capacitor discharged through a 1.5 kΩ resistor. Note 8: As with the Absolute Maximum power dissipation, the maximum power dissipation for operation depends on the ambient temperature. The 300 mW rating appearing under Operating Ratings results from substituting the maximum junction temperature for operation, 125°C, for TJ, 50°C for TA, and 250°C/W for θJA in P = (TJ − TA)/θJA. More power can be dissipated at lower ambient temperatures. Less power can be dissipated at higher ambient temperatures. The maximum power dissipation for operation appearing under Operating Ratings can be increased by 4 mW for each °C below 50°C ambient. It must be derated by 4 mW for www.national.com 4 LM3490 each °C above 50°C ambient. A θJA of 250°C/W represents the worst-case condition of no heat sinking of the 5-lead plastic SOT-23 package. Heat sinking enables the dissipation of more power during operation. Note 9: A typical is the center of characterization data taken with TA = TJ = 25°C. Typicals are not guaranteed. Note 10: All limits are guaranteed. All electrical characteristics having room-temperature limits are tested during production with TA = TJ = 25°C. All hot and cold limits are guaranteed by correlating the electrical characteristics to process and temperature variations and applying statistical process control. Note 11: All voltages except dropout are with respect to the voltage at the GND pin. 5 www.national.com LM3490 Typical Performance Characteristics COUT = 0.1 µF, and TA .=25°C. Dropout Voltage vs Load Current Unless indicated otherwise, VIN = VNOM + 1.5V, CIN = 0.1 µF, Dropout Voltage vs Junction Temperature 10007119 10007120 Ground Pin Current vs Input Voltage Ground Pin Current vs Input Voltage 10007109 10007110 Ground Pin Current vs Load Current Ground Pin Current vs Junction Temperature 10007121 10007122 www.national.com 6 LM3490 Input Current vs Input Voltage Input Current vs Input Voltage 10007111 10007112 Line Transient Response Line Transient Response 10007103 10007104 Load Transient Response Load Transient Response 10007105 10007106 7 www.national.com LM3490 Load Transient Response Load Transient Response 10007107 10007108 Output Voltage vs Input Voltage Output Voltage vs Input Voltage 10007113 10007114 Output Voltage vs Input Voltage Output Voltage vs Input Voltage 10007115 10007116 www.national.com 8 LM3490 Output ShortCircuit Current Output ShortCircuit Current 10007117 10007118 Power Supply Rejection Ratio Power Supply Rejection Ratio 10007124 10007125 DC Load Regulation 10007123 9 www.national.com LM3490 Applications Information ON/OFF Pin The LM3490 features a logic controlled ON/OFF pin that will allow the output voltage to be disabled, or enabled, as needed. The defined operating voltage range for this pin is 0.0V to 5.0V. The ON/OFF pin can not be left floating, as the output status cannot be guaranteed. Additionally, the ON/OFF pin should not be biased below ground potential as unpredictable device behavior may occur. Pulling the ON/OFF pin voltage to a value between the VIH threshold and 5.0V will enable the output voltage. Pulling the ON/OFF pin voltage to a value between the VIL threshold and Ground potential will disable the output voltage. Although the ON/OFF threshold is typically 725mV, and has no hysteresis, the ON/OFF signal must rise and fall, cleanly and promptly, from voltage levels that are below the VIL threshold and above the VIH threshold. The ON/OFF pin has no internal pull-up or pull-down to establish a default condition and, as a result, this pin must be terminated, either actively or passively, to an appropriate voltage level. www.national.com 10 LM3490 Physical Dimensions inches (millimeters) unless otherwise noted SOT-23 Package 5-Lead Small-Outline Package (M5) For Ordering, Refer to Ordering Information Table NS Package Number MF05A 11 www.national.com LM3490 100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF Notes THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION (“NATIONAL”) PRODUCTS. NATIONAL MAKES NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY OR COMPLETENESS OF THE CONTENTS OF THIS PUBLICATION AND RESERVES THE RIGHT TO MAKE CHANGES TO SPECIFICATIONS AND PRODUCT DESCRIPTIONS AT ANY TIME WITHOUT NOTICE. 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