LP3980-18B5F

Preliminary Datasheet LP3980 500mA,Ultra-low noise, Small Package Ultra-Fast CMOS LDO Regulator General Description Features The LP3980 is designed for portable RF and wireless  1.6V- 5.5V Input Voltage Range  Low Dropout : 240mV @ 300mA for battery-powered systems to deliver ultra low noise  500mA Output Current and low quiescent current. Regulator ground current  High PSSR: -76dB at 1KHz  0.01uA Standby Current When Shutdown ceramic capacitors, reducing the amount of board  Ultra-Fast Response in Line/Load transient space necessary for power applications, critical in  Current Limiting  Thermal Shutdown Protection  Available in SOT23-5/SOT23/TDFN-4 Package applications demanding performance and space requirements. The LP3980 performance is optimized increases only slightly in dropout, further prolonging the battery life. The LP3980 also works with low-ESR hand-held wireless devices. The LP3980 consumes less than 0.01µA in shutdown mode and has fast turn-on time less than 50µs. The other features include ultra low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. Order Information LP3980 F: Pb-Free Applications Package Type  Portable Media Players/MP3 players  Cellular and Smart mobile phone  LCD  DSC Sensor  Wireless Card B5 : SOT23-5 B3 : SOT23 QV : TDFN-4(1*1) Output Type 12 : 1.2V 15 : 1.5V 18 : 1.8V 25 : 2.5V 28 : 2.8V 30 : 3.0V 33 : 3.3V 50 : 5.0V A : Adj LP3980-00 Jul.-2018 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 1 of 10 Preliminary Datasheet LP3980 Marking Information Device LP3980-12B5F Marking Package Shipping LP3980 SOT23-5 3K/REEL Device LP3980-18B3F 12 YWX LP3980-15B5F LP3980 LP3980 SOT23-5 3K/REEL LP3980-25B3F LP3980 SOT23-5 3K/REEL LP3980-28B3F LP3980 SOT23-5 3K/REEL LP3980-30B3F LP3980 SOT23-5 3K/REEL LP3980-33B3F LP3980 3K/REEL SOT23 3K/REEL SOT23 3K/REEL SOT23 3K/REEL SOT23 3K/REEL SOT23 3K/REEL LP3980 LP3980 LP3980 LP3980 33 YWX SOT23-5 3K/REEL LP3980-50B3F 30 YWX LP3980-33B5F SOT23 30 YWX 28 YWX LP3980-30B5F LP3980 28 YWX 25 YWX LP3980-28B5F Shipping 25 YWX 18 YWX LP3980-25B5F Package 18 YWX 15 YWX LP3980-18B5F Marking LP3980 50 YWX SOT23-5 3K/REEL LP3980-12QVF BYW TDFN-4 12K/REEL SOT23-5 3K/REEL LP3980-18QVF CYW TDFN-4 12K/REEL SOT23-5 3K/REEL LP3980-28QVF HYW TDFN-4 12K/REEL SOT23 3K/REEL LP3980-30QVF GYW TDFN-4 12K/REEL SOT23 3K/REEL LP3980-33QVF EYW TDFN-4 12K/REEL 33 YWX LP3980-50B5F LP3980 50 YWX LP3980-AB5F LP3980 A YWX LP3980-12B3F LP3980 12 YWX LP3980-15B3F LP3980 15 YWX Marking indication: Y:Production year W:Production week X: Series Number Typical Application Circuit VIN VOUT VIN 1uF VOUT RUP EN (EN) (FB) 1uF 0.8V RDN GND Note1: Only the SOT23-5 package has an EN pin. R Note2: Only LP3980AB5F has an FB pin. The reference voltage is 0.8V. VOUT = 0.8V × (1 + R UP ) DN LP3980-00 Jul.-2018 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 2 of 10 Preliminary Datasheet LP3980 Functional Pin Description Package Type Pin Configurations SOT23-5 VIN 1 GND 2 EN 3 5 VOUT GND 1 3 4 FB / NC VIN 2 SOT23-5 (Top View) SOT23 SOT23 (Top View) VOUT TDFN-4(1*1) VOUT 1 4 VIN 3 EN 5 GND GND 2 TDFN-4 (Top View) Pin Description Pin No. Name Description SOT23-5 SOT23 TDFN-4 1 2 4 VIN Power Input voltage. 2 1 2 GND Ground. 3 - 3 EN Enable pin. 4 - - NC No connect. 5 3 1 LP3980-00 Jul.-2018 FB (LP3980A) VOUT Feedback pin. The reference voltage is 0.8V. Output voltage. Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 3 of 10 Preliminary Datasheet LP3980 Absolute Maximum Ratings Note 1  Input to GND ------------------------------------------------------------------------------------------------------------ -0.3V to 6V  EN to GND -------------------------------------------------------------------------------------------------------------- -0.3V to 6V  Output Voltage to GND ----------------------------------------------------------------------------------- -0.3V to (VIN+0.3V)  Maximum Junction Temperature ----------------------------------------------------------------------------------------- 150℃  Operating Ambient Temperature Range (TA) --------------------------------------------------------------- -40℃ to 85℃  Maximum Soldering Temperature (At leads, 10 sec) --------------------------------------------------------------- 260℃ Note 1. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Thermal Information  Maximum Power Dissipation (SOT23-5, PD, TA=25℃) ----------------------------------------------------------- 400mW  Thermal Resistance (SOT23-5, θJA) -------------------------------------------------------------------------------- 250℃/W  Maximum Power Dissipation (SOT23, PD, TA=25℃) -------------------------------------------------------------- 350mW  Thermal Resistance (SOT23, θJA) ----------------------------------------------------------------------------------- 350℃/W  Maximum Power Dissipation (TDFN-4, PD, TA=25℃) ------------------------------------------------------------ 390mW  Thermal Resistance (TDFN-4, θJA) --------------------------------------------------------------------------------- 256℃/W ESD Susceptibility  HBM(Human Body Mode) ---------------------------------------------------------------------------------------------------- 2KV  MM(Machine Mode) ---------------------------------------------------------------------------------------------------------- 200V LP3980-00 Jul.-2018 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 4 of 10 Preliminary Datasheet LP3980 Electrical Characteristics VIN = VOUT + 1V, CIN = COUT = 1µF , TA = 25℃, unless otherwise specified. Symbol Parameter VIN Input Voltage ΔVOUT Output Voltage Accuracy IOUT = 1mA Imax Maximum output Current VEN = VIN, VIN > 2.5V 500 mA ILIM Current Limit RLOAD = 1Ω 650 mA IQ Quiescent Current VEN ≥ 1.2V, IOUT = 0mA 20 μA IOUT = 200mA, VOUT > 2.8V 160 200 mV IOUT = 300mA, VOUT > 2.8V 240 300 mV IOUT = 500mA, VOUT > 2.8V 400 500 mV VDROP Test Conditions Min Typ 1.6 Dropout Voltage −2 Max Units 5.5 -- +2 % ΔVLINE Line Regulation VIN = (VOUT + 1V) to 5.5V, IOUT = 1mA 0.1 % ΔVLOAD Load Regulation 1mA < IOUT < 300mA 0.6 % ISTBY Standby Current VEN = GND, Shutdown 0.01 1 μA IIBSD EN Input Bias Current VEN = GND or VIN 0.01 100 nA 0.4 V Logic-Low VIL EN Threshold VIH - PSRR TSD LP3980-00 Voltage Logic-High Voltage Output Noise Voltage Power Supply f=217Hz Rejection Rate f=1KHz VIN = 3V to 5.5V, Shutdown VIN = 3V to 5.5V, Start-Up f = 10Hz to 100kHz, IOUT = 0mA VOUT = 2.8V COUT = 1µF, IOUT = 50mA Thermal Shutdown Temperature Jul.-2018 1.4 Email: marketing@lowpowersemi.com V 100 uVRMS −80 dB −76 dB 150 ℃ www.lowpowersemi.com Page 5 of 10 Preliminary Datasheet LP3980 Applications Information Like any low-dropout regulator, the external capacitors used with the LP3980 must be carefully selected for regulator stability and performance. Using a capacitor whose value is > 1µF on the LP3980 input and the amount of capacitance can be increased without limit. The input capacitor must be located a distance of not more than 0.5 inch from the input pin of the IC and returned to a clean analog ground. Any good quality ceramic or tantalum can be used for this capacitor. The capacitor with larger value and lower ESR (equivalent series resistance) provides better PSRR and line-transient response. The output capacitor must meet both requirements Enable Function The LP3980 features an LDO regulator enable/disable function. To assure the LDO regulator will switch on, the EN turn on control level must be greater than 1.2 volts. The LDO regulator will go into the shutdown mode when the voltage on the EN pin falls below 0.4 volts. For to protecting the system, the LP3980 have a quick-discharge function. If the enable function is not needed in a specific application, it may be tied to VIN to keep the LDO regulator in a continuously on state. Thermal Considerations for minimum amount of capacitance and ESR in all Thermal protection limits power dissipation in LDOs designed LP3980. When the operation junction temperature specifically to work with low ESR ceramic output exceeds 150℃, the OTP circuit starts the thermal capacitor performance shutdown function turn the pass element off. The consideration. Using a ceramic capacitor whose pass element turns on again after the junction value is at least 1µF with ESR is > 25mΩ on the temperature cools by 20℃. For continue operation, LP3980 output ensures stability. The LP3980 still do not exceed absolute maximum operation junction works well with output capacitor of other types due to temperature 125℃. application. in The LP3980 space-saving and is the wide stable ESR range. Figure 1 shows the curves of allowable ESR range as a function of load The power dissipation definition in device is : PD = (VIN−VOUT) x IOUT + VIN x IQ current for various output capacitor values. Output capacitor of larger capacitance can reduce noise and The maximum power dissipation depends on the improve load transient response, stability, and PSRR. thermal resistance of IC package, PCB layout, the The output capacitor should be located not more rate than 0.5 inch from the VOUT pin of the LP3980 and difference between junctions to ambient. returned to a clean analog ground. of surroundings airflow and temperature The maximum power dissipation can be calculated by following formula: PD(MAX) = ( TJ(MAX) − TA ) / θJA LP3980-00 Jul.-2018 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 6 of 10 Preliminary Datasheet LP3980 Where TJ(MAX) is the maximum operation junction temperature 125℃, TA is the ambient temperature and the θJA is the junction to ambient thermal resistance. For recommended operating conditions specification of LP3980, where TJ(MAX) is the maximum junction temperature of the die (125℃) and TA is the maximum ambient temperature. The junction to ambient thermal resistance (θJA is layout dependent) for SOT23-5 package is 250℃/W. PD(MAX) = (125℃ − 25℃) / 250 = 400mW (SOT23-5) The maximum power dissipation depends on operating ambient temperature for fixed TJ(MAX) and thermal resistance θJA. LP3980-00 Jul.-2018 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 7 of 10 Preliminary Datasheet LP3980 Packaging Information SOT23-5 LP3980-00 Jul.-2018 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 8 of 10 Preliminary Datasheet LP3980 SOT23 LP3980-00 Jul.-2018 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 9 of 10 Preliminary Datasheet LP3980 TDFN-4 LP3980-00 Jul.-2018 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 10 of 10