BL9161-33BARN

BL9161 300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator FEATURES   Ultra-low Noise Ultra-Fast Response in Line/Load Transient 0.01A Standby Current When Shutdown Low Dropout: 230mV@300mA Wide Operating Voltage Ranges: 2.2V to 5.5V Low Temperature Coefficient Current Limiting Protection Thermal Shutdown Protection Only 1F Output Capacitor Required for Stability High Power Supply Rejection Ratio Fast output discharge Available in SOT23-5 ，SC70-5 and DFN1×1-4L Package             APPLICATIONS Cellular and Smart Phones Cordless Telephones Battery-Powered Equipment Laptop, Palmtops, Notebook Computers      Hand-Held Instruments PCMCIA Cards MP3/MP4/MP5 Players Portable Information Appliances DESCRIPTION The BL9161 is designed for portable applications with demanding performance and space requirements. The BL9161 performance is optimized for battery-powered systems to deliver ultra low noise and low quiescent current. Regulator ground current increases only slightly in dropout, further prolonging the battery life. The BL9161 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The BL9161 consumes only 0.01µA current in shutdown mode and has fast turn-on time (Typical 50µs). The other features include ultra low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. TYPICAL APPLICATION ORDERING INFORMATION BL9161 XX X X XXX  Package: Enable Option: A: active high with internal pull down VIN 1 C1 1uF 2 Chip Enable 3 VIN VOUT 5 VOUT C2 1uF GND BL9161 EN NC 4 Output Voltage Accuracy B: ±2% Application hints: Output capacitor (C2≥ 2.2uF) is recommended in BL9161-1.5V and BL91611.8V application to assure the stability of circuit. Output Voltage: 15: 1.5V 18:1.8V 28:2.8V 30: 3.0V 33:3.3V www.belling.com.cn 1 V1.2 BL9161 300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator Absolute Maximum Rating (Note 1) Input Supply Voltage (VIN) EN Pin Input Voltage Output Voltages Output Current -0.3V to +6V -0.3V to VIN -0.3V to VIN+0.3V 300mA Maximum Junction Temperature 150°C (Note2) Operating Temperature Range -40°C to 85°C Storage Temperature Range -65°C to 125°C Lead Temperature (Soldering, 10s) 300°C PIN CONFIGURATIONS SOT23-5 &SC70-5(TOP VIEW) DFN1X1-4L(TOP VIEW) Package Marking SOT23-5 & SC70-5 Thermal Resistance (Note 3): DFN1×1-4L Package ӨJA ӨJC SOT23-5 SC70-5 250℃/W 333℃/W 130℃/W 170℃/W CKU: Chip ID X: Output voltage Y: Data code--Year W: Data code—Week Output voltage 1.5V 1.8V 2.8V X(SOT23-5 & SC70-5) C D X(DFN1×1-4L) E D Y Year W Week 4 2014 A 1 5 2015 … … 3.0V 3.3V G I K C B A 6 2016 … … 0 2020 Y 25 Z 26 a 27 1 2021 … … … … y 51 z 52 Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The BL9161 is guaranteed to meet performance specifications from 0°C to 70°C. Specifications over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation withstatistical process controls. Note 3: Thermal Resistance is specified with approximately 1 square of 1 ozcopper. www.belling.com.cn 2 V1.2 BL9161 300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator Pin Description SOT23-5 & SC70-5 PIN NAME FUNCTION 1 VIN Power Input Voltage. 2 3 4 5 GND EN NC VOUT Ground. Chip Enable Pin, This pin has an internal pull-down resistor No Connection. Output Voltage. DFN1X1-4L PIN NAME FUNCTION 1 VOUT Output Voltage. 2 3 4 Exposed Pad GND EN VIN Ground. Chip Enable Pin, This pin has an internal pull-down resistor Power Input Voltage. The exposed pad should be connected to a large ground plane to maximize thermal performance. Block Diagram www.belling.com.cn 3 V1.2 BL9161 300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator Electrical Characteristics (Note 4) (VIN=Vout +1V, EN=VIN, CIN=COUT=1F, TA=25℃,unless otherwise noted.) Parameter Symbol Conditions MIN VIN Input Voltage 2.2 Output Voltage Accuracy VOUT Current Limit Quiescent Current ILIM Dropout Voltage VDROP Line Regulation (Note 5) Load Regulation(Note6) Output Voltage(Note 7) Temperature Coefficient IQ unit V +2 % 450 70 110 mA A 150 200 -2 RLOAD=1 VEN>1.2V, IOUT=0mA IOUT=200mA, VOUT=3.3V IOUT=300mA, VOUT=3.3V 360 mV 230 300 0.17 VIN=Vout+1V to 5.5V IOUT=1mA 0.02 ∆VLOAD 1mA 25mΩ on the BL9161 output ensures stability. The BL9161 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 BL9161 and returned to a clean analog ground. Enable Function down mode when the voltage on the EN pin falls below 0.4 volts. For to protect the system, the BL9161 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 BL9161. When the operation junction temperature exceeds 170°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 30°C. For continue operation, do not exceed absolute maximum operation junction temperature 125°C. The power dissipation definition in device is: 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 BL9161, 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 SOT-23-5 package is 250°C/W, on standard JEDEC 51-3 thermal test board. The maximum power dissipation at TA= 25°C can be calculated by following formula: The BL9161 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 shut- www.belling.com.cn 7 V1.2 BL9161 300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator PD(MAX) = (125°C−25°C)/250 = 400mW (SOT-23-5) The maximum power dissipation depends on operating ambient temperature for fixed TJ(MAX) and thermal resistance θJA. It is also useful to calculate the junction of temperature of the BL9161 under a set of specific conditions. In this example let the Input voltage VIN=3.3V, the output current Io=300mA and the case temperature TA=40°C measured by a thermal couple during operation. The power dissipation for the VOUT=2.8V version of the BL9161 can be calculated as: PD = (3.3V−2.8V) ×300mA+3.6V×100uA =150mW And the junction temperature, TJ, can be calculated as follows: TJ=TA+PD×θJA=40°C+0.15W×250°C/W =40°C+37.5°C=77.5°C