LP3995A-33X3F

Preliminary Datasheet LP3995A/B 200mA,Ultra-low Noise LDO Regulator General Description Features The LP3995 is designed for portable applications with  Ultra-Low-Noise for RF Application demanding performance and space requirements. The  Input Voltage up to 35V LP3995 performance is optimized for high voltage  Low Dropout : 600mV @ 100mA systems to deliver ultra low noise and low quiescent  Output Current ≥200mA current. Regulator ground current increases only  Ultra-Fast Response in Line/Load Transient slightly in dropout, further prolonging the input system  Current Limiting and Thermal Shutdown life. The LP3995 also works with low-ESR ceramic Protection capacitors, reducing the amount of board space necessary for power applications, critical in hand-held Applications wireless devices. The other features include ultra low  PMP/PDA/MP3 players dropout voltage, high output accuracy, current limiting  Cellular and Mobile phone protection, and high ripple rejection ratio.  RF Module  Sensor Module Order Information Typical Application Circuit LP3995 A / B □ □ □ □ □ F: Pb-Free VIN Vout OUT VIN Package Type B3: SOT23-3 X3: SOT89-3 GND 10uF 10uF Output Type 30: 3.0V 33: 3.3V 36: 3.6V 50: 5.0V Marking Information Device Marking Package Shipping LP3995AB3F XXYWX SOT23 3K/REEL XXYWX SOT89 1K/REEL LP3995BB3F LP3995AX3F LP3995BX3F Y:Year code .W: W is week code. X: X is series number. LP3995A/B-00 Apr.-2017 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 1 of 7 Preliminary Datasheet LP3995A/B Functional Pin Description Package Type Pin Configurations 3 SOT-23-3 / SOT89-3 SOT23-3 SOT89-3 TOP VIEW TOP VIEW 2 1 1 2 3 Pin Description Pin SOT89 SOT23 Name Description LP3995A LP3995B LP3995A LP3995B 1 2 1 3 GND Ground. 2 3 3 2 Vin Power Input Pin 3 1 2 1 Vout Output Pin. Function Diagram LP3995A/B-00 Apr.-2017 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 2 of 7 Preliminary Datasheet LP3995A/B Absolute Maximum Ratings  Supply Input Voltage ---------------------------------------------------------------------------------------- -0.3V to 35V Power Dissipation, PD @ TA = 25°C  SOT23-3 --------------------------------------------------------------------------------------------------------------- 450mW  SOT89-3 --------------------------------------------------------------------------------------------------------------- 700mW  Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------- 260°C  Storage Temperature Range -------------------------------------------------------------------------- −65°C to 150°C 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 Recommended Operating Conditions  Supply Input Voltage ------------------------------------------------------------------------------------ Vout+1V to 30V  Operation Junction Temperature Range ------------------------------------------------------------ -20°C to 125°C  Operation Ambient Temperature Range ------------------------------------------------------------- -20°C to 85°C Electrical Characteristics (VIN = 5V, CIN = 2.2µF, COUT =10uF，TA = 25°C, unless otherwise specified) Parameter Symbol Test Conditions Min Typ. Max Units Output Voltage Accuracy ΔVOUT IOUT = 1mA −2 -- +2 % Current Limit ILIM RLOAD = 1Ω 220 Quiescent Current IQ IOUT = 0mA 3 IOUT = 10mA, VOUT =3.3V 60 70 IOUT = 100mA, VOUT =3.3V 600 700 IOUT = 200mA, VOUT =3.3V 1200 1400 Dropout Voltage VDROP Linear Regulation ΔVLINE Load Regulation ΔVLOAD Thermal Shutdown Temperature TSD VIN = (VOUT + 1V) to 12V, IOUT = 1mA 1mA < IOUT < 200mA Thermal Shutdown Hysteresis LP3995A/B-00 Apr.-2017 mA Email: marketing@lowpowersemi.com μA mV 0.2 % 2 % 150 °C 25 °C www.lowpowersemi.com Page 3 of 7 Preliminary Datasheet LP3995A/B Typical Operating Characteristics △Vout Waveform，Iout=1mA，VIN=5V，Vout=3.3V LP3995A/B-00 Apr.-2017 △Vout Waveform，Iout=200mA，VIN=5V，Vout=3.3V Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 4 of 7 Preliminary Datasheet LP3995A/B Applications Information Like any low-dropout regulator, the external capacitors The power dissipation definition in device is: used with the LP3995 must be carefully selected for regulator stability and performance. Using a capacitor whose value is ≥ 10µF on the LP3995 input. The PD = (VIN−VOUT) x IOUT + VIN x IQ 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 LP3995 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 performance For recommended operating conditions specification consideration. Using a ceramic capacitor whose value of LP3995, the junction to ambient thermal resistance in space-saving and is at least 10µF with ESR is > 25mΩ on the LP3995 output ensures stability. The LP3995 still works well (θJA is layout dependent) for LP3995 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 LP3995 and returned to a The maximum power dissipation depends on clean analog ground. operating ambient temperature for fixed TJ(MAX) and thermal resistance θJA. Thermal Considerations Thermal protection limits power dissipation in LP3995. 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. For continue operation, do not exceed absolute maximum operation junction temperature 125°C. LP3995A/B-00 Apr.-2017 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 5 of 7 Preliminary Datasheet LP3995A/B Packaging Information SOT-89 LP3995A/B-00 Apr.-2017 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 6 of 7 Preliminary Datasheet LP3995A/B SOT23-3 LP3995A/B-00 Apr.-2017 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 7 of 7