BL9169 300mA,Ultra-low noise, Small Package Ultra-Fast CMOS LDO Regulator General Description The BL9169 is designed for portable RF and wireless applications with demanding performance and space requirements. The BL9169 performance is optimized for battery-powered systems to deliver ultra low noise and low quiescent current. The BL9169 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The BL9169 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. It is available in the 5-lead of SOT23-5 and TSOT23-5 packages. Features Ultra-Low-Noise for RF Application 2.5V- 5.5V Input Voltage Range Low Dropout : 220mV @ 300mA 1.2V, 1.5V, 1.8V, 2.5V, 2.8V,3.0V,3.3V, 3.6V and 5V Fixed 300mA Output Current, 550mA Peak Current High PSSR:-76dB at 1KHz 0.01uA Standby Current When Shutdown TTL-Logic-Controlled Shutdown Input Ultra-Fast Response in Line/Load transient Current Limiting and Thermal Shutdown Protection Quick start-up (typically 50uS) Available in SOT23-5 and TSOT23-5 Package Applications Portable Media Players/MP3 players Cellular and Smart mobile phone LCD DSC Sensor Wireless Card www.belling.com.cn 1 V1.0 BL9169 Typical Application Circuit Ordering Information BL9169 □ □ □ □ □ F: Pb-Free Package Type B3: SOT23-3 B5: SOT23-5 J5: TSOT23-5 Output Voltage Type 12: 1.2V 15: 1.5V 18: 1.8V 25: 2.5V 28: 2.8V 30: 3.0V 33: 3.3V 36: 3.6V 50: 5.0V Pin Configurations T op V iew V IN TSOT23-5/SOT-23-5 www.belling.com.cn 2 VO UT 1 GND 3 SOT-23-3 2 V1.0 BL9169 Functional Pin Description SOT23-5 SOT23-3 Pin Name Pin Function 1 3 VIN Power Input Voltage. 2 1 GND Ground. 3 4 5 NC Chip Enable (Active High). Note that this pin is high impedance. There is an integrated pull low 2MΩ resistor connected to GND when the control signal is floating. No Connection. VOUT Output Voltage. EN 2 Function Block Diagram www.belling.com.cn 3 V1.0 BL9169 Absolute Maximum Ratings Supply Input Voltage------------------------------------------------------------------------------------------------------- 6.5V Other Pin Voltage---------------------------------------------------------------------------------------- -0.3V to VIN+0.3V Power Dissipation, PD @ TA = 25°C SOT23-5 ------------------------------------------------------------------------------------------------------------------450mW SOT23-3 ------------------------------------------------------------------------------------------------------------------450mW Package Thermal Resistance SOT23-5, θJA ----------------------------------------------------------------------------------------------------------250°C/W SOT23-3, θJA ----------------------------------------------------------------------------------------------------------250°C/W Lead Temperature (Soldering, 10 sec.) -----------------------------------------------------------------------------260°C Storage Temperature Range ----------------------------------------------------------------------------- −65°C to 150°C ESD Susceptibility HBM (Human Body Mode) ------------------------------------------------------------------------------------------------2kV MM(Machine-Mode)--------------------------------------------------------------------------------------------------------200V Recommended Operating Conditions Supply Input Voltage--------------------------------------------------------------------------------------------- 2.5V to 5.5V EN Input Voltage ----------------------------------------------------------------------------------------------------- 0V to 5.5V Operation Junction Temperature Range -------------------------------------------------------------- −40°C to 125°C Operation Ambient Temperature Range----------------------------------------------------------------- −40°C to 85°C Electrical Characteristics (VIN = VOUT + 1V, CIN = COUT = 1µF, TA = 25° C, unless otherwise specified) Parameter Symbol Test Conditions Min Output Voltage Accuracy ΔVOUT IOUT = 1mA Output Loading Current ILOAD VEN=VIN,VIN>2.5V Current Limit ILIM RLOAD = 1Ω Quiescent Current IQ VEN ≥ 1.2V, IOUT = 0mA VDROP IOUT = 200mA, VOUT > 2.8V IOUT = 300mA, VOUT > 2.8V Dropout Voltage −2 420 Typ. Max Units -- +3 % 300 mA 450 mA 100 130 130 200 220 300 μA mV Line Regulation ΔVLINE VIN = (VOUT + 1V) to 5.5V, IOUT = 1mA 0.2 %/V Load Regulation ΔLOAD 1mA < IOUT < 300mA 2 %/A Standby Current ISTBY VEN = GND, Shutdown 0.01 1 μA EN Input Bias Current IIBSD VEN = 3V VIN = 3V to 5.5V, Shutdown 1.5 2 μA 0.4 V EN Threshold Logic-Low Voltage www.belling.com.cn VIL 4 V1.0 BL9169 Logic-High Voltage VIH 10Hz to 100kHz, IOUT = 200mA, COUT = 1µF Output Noise Voltage Power Supply VIN = 3V to 5.5V, Start-Up COUT = 1µF, IOUT = 100mA f = 1kHz VIN+ 0.3 1.4 300 uVRMS -76 dB Rejection Rate f = 10kHz Thermal Shutdown Temperature −65 TSD 150 °C Typical Operating Characteristics www.belling.com.cn 5 V1.0 BL9169 www.belling.com.cn 6 V1.0 BL9169 following formula: PD(MAX) = ( TJ(MAX) − TA ) /θJA Where TJ(MAX) is the maximum operation junction temperature 125°C, TA is the ambient temperature and the θJA is the junction to ambient thermal resistance. For recommended operating conditions specification of BL9169, where TJ(MAX) is the maximum junction temperature of the die (125°C) and TA is the maximum ambient temperature. The junction to ambient thermal resistance (θJA is layout dependent) for SOT23-5 package is 250°C/W. PD(MAX) = (125°C−25°C) / 250 = 400mW (SOT23-5) The maximum power dissipation depends on operating ambient temperature for fixed TJ(MAX) and thermal resistance θJA. Applications Information Like any low-dropout regulator, the external capacitors used with the BL9169 must be carefully selected for regulator stability and performance. Using a capacitor whose value is > 1µF on the BL9169 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 for minimum amount of capacitance and ESR in all LDOs application. The BL9169 is designed specifically to work with low ESR ceramic output capacitor in space-saving and performance consideration. Using a ceramic capacitor whose value is at least 1µF with ESR is > 25mΩ on the BL9169 output ensures stability. The BL9169 still works well with output capacitor of other types due to the wide stable ESR range. Output capacitor of larger capacitance can reduce noise and improve load transient response, stability, and PSRR. The output capacitor should be located not more than 0.5 inch from the VOUT pin of the BL9169 and returned to a clean analog ground. Start-up Function Enable Function The BL9169 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 1.4 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 BL9169 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 Thermal protection limits power dissipation in BL9169. 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 20°C. For continue operation, do not exceed absolute maximum operation junction temperature 125°C. The power dissipation definition in device is: PD = (VIN−VOUT) x IOUT + VIN x IQ The maximum power dissipation depends on the thermal resistance of IC package, PCB layout, the rate of surroundings airflow and temperature difference between junction to ambient. The maximum power dissipation can be calculated by www.belling.com.cn 7 V1.0 BL9169 Packaging Information SOT23-5 www.belling.com.cn 8 V1.0 BL9169 www.belling.com.cn 9 V1.0 BL9169 SOT23-3 www.belling.com.cn 10 V1.0