LP3993-33B3F

Preliminary Datasheet LP3993 200mA,Ultra-low Noise LDO Regulator General Description Features The LP3993 is designed for portable applications with  Ultra-Low-Noise for RF Application demanding performance and space requirements. The  Input Voltage up to 24V  Low Dropout : 300mV @ 100mA  Output Current 200mA  Ultra-Fast Response in Line/Load Transient  Current Limiting and Thermal Shutdown LP3993 performance is optimized for high voltage systems to deliver ultra low noise and low quiescent current. Regulator ground current increases only slightly in dropout, further prolonging the input system life. The LP3993 also works with low-ESR ceramic Protection capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The other features include ultra low Applications dropout voltage, high output accuracy, current limiting  PMP/PDA/MP3 players protection, and high ripple rejection ratio.  Cellular and Mobile phone  RF Module  Sensor Module Order Information LP3993 □ □ □ □ □ F: Pb-Free Package Type B3: SOT23-3 Typical Application Circuit VIN Vout OUT VIN X3: SOT89-3 GND Output Type 10uF 10uF 33: 3.3V 36: 3.6V 50: 5.0V LP3993-00 Apr.-2017 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 1 of 7 Preliminary Datasheet LP3993 Functional Pin Description Package Type Pin Configurations SOT-23-3 / SOT89-3 3 4 SOT23-3 SOT89-3 TOP VIEW TOP VIEW 2 1 1 2 3 Pin Description Pin SOT23-3 SOT89-3 1 1 3 2/4 2 3 Name Description GND Ground. Vin Power Input Pin Vout Output Pin. Marking Information Device Marking LPS LP3993-33B3F 2EYWX Package Shipping SOT23-3 3K/REEL SOT89-3 1K/REEL SOT23-3 3K/REEL SOT89-3 1K/REEL SOT23-3 3K/REEL SOT89-3 1K/REEL LPS LP3993-33X3F 3993 33YWX LPS LP3993-36B3F 2LYWX LPS LP3993-36X3F 36YWX LPS LP3993-50B3F 2KYWX LPS LP3993-50X3F 3993 50YWX Marking indication: Y:Production year W:Production week X: Series Number LP3993-00 Apr.-2017 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 2 of 7 Preliminary Datasheet LP3993 Function Diagram Absolute Maximum Ratings  Supply Input Voltage ------------------------------------------------------------------------------------------- -0.3V to 30V  Other pin to GND -------------------------------------------------------------------------------------------------- -0.3V to 8V  Maximum Junction Temperature ------------------------------------------------------------------------------------ 150°C  Maximum Soldering Temperature (at leads, 10 sec) ---------------------------------------------------------- 260°C  Operating Junction Temperature Range (T J) ---------------------------------------------------------- -40℃ to 85°C  Storage Temperature --------------------------------------------------------------------------------------- -65℃ to 165°C Power Dissipation, PD @ TA = 25°C  SOT23-3 ----------------------------------------------------------------------------------------------------------------- 450mW  SOT89-3 ----------------------------------------------------------------------------------------------------------------- 700mW Package Thermal Resistance  SOT23-3, θJA --------------------------------------------------------------------------------------------------------- 250°C/W  SOT89-3, θJA --------------------------------------------------------------------------------------------------------- 165°C/W ESD Susceptibility  HBM (Human Body Mode) ------------------------------------------------------------------------------------------------ 2kV  MM(Machine-Mode) ------------------------------------------------------------------------------------------------------ 200V LP3993-00 Apr.-2017 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 3 of 7 Preliminary Datasheet LP3993 Recommended Operating Conditions  Supply Input Voltage -------------------------------------------------------------------------------------- Vout+1V to 24V Electrical Characteristics (CIN = 10µF, COUT =10uF，Vin=Vout+1V，TA = 25°C, unless otherwise specified) Parameter Symbol Test Conditions Min Typ. Max Units Output Voltage Accuracy ΔVOUT IOUT = 1mA −2 -- +2 % Output Loading Current Iout Current Limit ILIM RLOAD = 1Ω Quiescent Current IQ IOUT = 0mA 5 μA Dropout Voltage VDROP IOUT = 100mA, VOUT =3.3V 300 mV Linear Regulation ΔVLINE Load Regulation ΔVLOAD \Thermal Shutdown Temperature TSD 200 VIN = (VOUT + 1V) to 12V, IOUT = 1mA 1mA < IOUT < 150mA Thermal Shutdown Hysteresis LP3993-00 Apr.-2017 Email: marketing@lowpowersemi.com mA 250 0.2 % 2 % 150 °C 25 °C www.lowpowersemi.com Page 4 of 7 Preliminary Datasheet LP3993 Applications Information Like any low-dropout regulator, the external capacitors The power dissipation definition in device is: used with the LP3993 must be carefully selected for regulator stability and performance. Using a capacitor PD = (VIN−VOUT) x IOUT + VIN x IQ whose value is ≥ 10µF on the LP3993 input. The The maximum power dissipation depends on the input capacitor must be located a distance of not more thermal resistance of IC package, PCB layout, the rate than 0.5 inch from the input pin of the IC and returned of surroundings airflow and temperature difference to a clean analog ground. Any good quality ceramic or between junction and ambient. tantalum can be used for this capacitor. The capacitor The maximum power dissipation can be calculated by with larger value and lower ESR (equivalent series following formula: resistance) provides better PSRR and line-transient response. The output capacitor must meet both PD(MAX) = ( TJ(MAX) − TA ) /θJA requirements for minimum amount of capacitance and Where TJ(MAX) is the maximum operation junction ESR in all LDO`s application. The LP3993 is designed temperature 125°C, TA is the ambient temperature and specifically to work with low ESR ceramic output the θJA is the junction to ambient thermal resistance. capacitor For recommended operating conditions specification in space-saving and performance consideration. Using a ceramic capacitor whose value is at least 10µF with ESR is > 25mΩ on the LP3993 output ensures stability. The LP3993 still works well of LP3993, the junction to ambient thermal resistance (θJA is layout dependent) for LP3993 showed below. SOT23-3 : 250℃/W with output capacitor of other types due to the wide stable ESR range. Output capacitor of larger capacitance can reduce noise and improve load SOT89-3 : 165℃/W And， transient response, stability, and PSRR. The output PD=(125°C−25°C)/250℃/W= 400mW (SOT23-3) capacitor should be located not more than 0.5 inch PD=(125°C−25°C)/165℃/W= 600mW (SOT89-3) from the VOUT pin of the LP3993 and returned to a The maximum power dissipation depends on clean analog ground. operating ambient temperature for fixed T J(MAX) and thermal resistance θJA. Thermal Considerations Thermal protection limits power dissipation in LP3993. When the operation junction temperature exceeds 150°C, the OTP circuit starts the thermal shutdown function turn the pass element off. The pass element turns on again after the junction temperature cools by 25°C. LP3993-00 Apr.-2017 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 5 of 7 Preliminary Datasheet LP3993 Packaging Information SOT-89 LP3993-00 Apr.-2017 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 6 of 7 Preliminary Datasheet LP3993 SOT23-3 LP3993-00 Apr.-2017 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 7 of 7