BL9193-25BAPURN

BL9193 300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator FEATURES ⚫ ⚫ Hand-Held Instruments PCMCIA Cards MP3/MP4/MP5 Players Portable Information Appliances ⚫ Ultra-low Noise for RF Application ⚫ ⚫ Ultra-Fast Response in Line/Load Transient Step-Down Converter DESCRIPTION ⚫ Quick Start-Up (Typically 50S) , ⚫ 0.01A Standby Current When Shutdown. ⚫ Low Dropout:210mV@300mA The BL9193 is designed for portable RF and ⚫ Wide Operating Voltage Ranges:2V to wireless applications with demanding perfor6V mance and space requirements. The BL9193 ⚫ TTL-logic-Controlled Shutdown Input performance is optimized for battery-powered ⚫ Low Temperature Coefficient systems to deliver ultra low noise and low ⚫ Current Limiting Protection quiescent current. A noise bypass pin is ⚫ Thermal Shutdown Protection available for further reduction of output noise. Regulator ground current increases only ⚫ Only 1F Output Capacitor Required for slightly in dropout, further prolonging the Stability battery life. The BL9193 also works with low⚫ High Power Supply Rejection Ratio ESR ceramic capacitors, reducing the ⚫ Custom Voltage Available amount of board space necessary for power ⚫ Fast output discharge applications, critical in hand-held wireless ⚫ Available in 5-Lead SOT-23 and SC-70 devices. The BL9193 consumes less than Package 0.01μA in shutdown mode and has fast turnon time less than 50μs. The other features include ultra low dropout voltage, high output APPLICATIONS accuracy, current limiting protection, and high ripple rejection ratio. Available in the 5-lead of ⚫ Cellular and Smart Phones SC-70, SOT-23 packages. ⚫ Battery-Powered Equipment ⚫ Laptop, Palmtops,Notebook Computers ⚫ ORDERING INFORMATION TYPICAL APPLICATION BL9193 XX X X X XXX Package: RN: SOT-23-5 URN: SC-70-5 Features P: Standard (default, lead free) C: Customized Enable Option: A: active high with internal 8 MΩ pull down B: active high with external pull down C: active low with internal 2 MΩ pull up D: active low with external pull up Output Voltage Accuracy A: ±1% B: ±2% VIN 1 C1 1uF 2 Chip Enable VIN VOUT 5 VOUT C2 1uF GND BL9193 3 EN BP 4 C3 22nF Application hints: Output capacitor (C2≥2.2uF) is recommended in BL9193-1.2V，BL9193-1.5V，BL91931.8V application to assure the stability of circuit. Output Voltage: 12:1.2V 15:1.5V 18:1.8V 25:2.5V 28:2.8V 30:3.0V 33:3.3V CT: custom fixed output (50mV step) AD: Adjustable www.belling.com.cn BL9193 Rev 2.5 Belling Proprietary Information. Unauthorized Photocopy and Duplication Prohibited © 2011 Belling All Rights Reserved 1 BL9193 300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator Absolute Maximum Rating (Note 1) Maximum Junction Temperature 125°C -0.3V to +6V (Note2) -0.3V to +Vin Operating Temperature Range -40°C to 85°C -0.3V to Vin+0.3V Storage Temperature Range -65°C to 125°C -0.3V to +6V Lead Temperature (Soldering, 10s) 300°C Step-Down Converter 300mA Input Supply Voltage (VCC) EN Input Voltage Output Voltage BP Voltage Output Current , Package Information Thermal Resistance (Note 4): Package SOT23-5 SC70-5 SOT23-5/SC70-5 TOP VIEW VIN 1 5 Part Number 3 4 BP/FB Top Mark Temp Range W(Note3) BL9193-12BA CAY BL9193-15BA CBYW -40°C to +85°C BL9193-18BA CCYW -40°C to +85°C BL9193-25BA CDYW -40°C to +85°C BL9193-28BB CEYW -40°C to +85°C BL9193-30BA CFYW -40°C to +85°C BL9193-33BA CGYW -40°C to +85°C BL9193-12BB CHYW -40°C to +85°C BL9193-28BA CIYW -40°C to +85°C BL9193-ADBA CJYW -40°C to +85°C Y Year 8 2018 9 2019 0 2020 1 2021 A 1 … … Y 25 Z 26 W Week ӨJC 130°C/W 170°C/W MARKING GND 2 EN VOUT ӨJA 250C/W 333C/W -40°C to +85°C … … a 27 … … 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 BL9193 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 with statistical process controls. Note 3: Y: Year of manufacturing W: Week of manufacturing Note 4: Thermal Resistance is specified with approximately 1 square of 1 oz copper. www.belling.com.cn BL9193 Rev 2.5 Belling Proprietary Information. Unauthorized Photocopy and Duplication Prohibited © 2011 Belling All Rights Reserved 2 BL9193 300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator Pin Description PIN 1 2 NAME VIN GND 3 EN 4 5 BP/FB VOUT FUNCTION Power Input Voltage. Step-Down Converter Ground. Chip Enable Pin with four options. A: active high with internal 8 MΩ pull down B: active high with external pull down C: active low with internal 2 MΩ pull up D: active low with external pull up Reference Noise Bypass. FB pin for adjustable version. Output Voltage. , Block Diagram VIN VIN Quick Start Quick Start - Error Amplifier BP + BP VREF + VOUT Current Limit And Thermal Protection EN - Error Amplifier VREF GND VOUT Current Limit And Thermal Protection EN GND BL9193 XX XA BL9193 XX XC VIN VIN Quick Start Quick Start - Error Amplifier BP + VREF VOUT BP Current Limit And Thermal Protection EN + VREF GND - Error Amplifier VOUT Current Limit And Thermal Protection EN BL9193 XX XB GND BL9193 XX XD www.belling.com.cn BL9193 Rev 2.5 Belling Proprietary Information. Unauthorized Photocopy and Duplication Prohibited © 2011 Belling All Rights Reserved 3 BL9193 300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator Electrical Characteristics (Note 5) (VIN=3.6V, EN=VIN, CIN=COUT=1F, CBP=22nF, TA=25℃, unless otherwise noted.) Parameter Symbol Conditions MIN TYP Input Voltage VIN 2 -1 Step-Down Converter VIN=3.6V, Output Voltage Accuracy IOUT=1mA -2 VOUT (Note 6) VIN=3.4V, -2.5 IOUT=300mA Current Limit ILIM 400 430 RLOAD=1 Quiescent Current IQ VEN>1.2V, IOUT=0mA 90 IOUT=200mA, 130 VOUT=2.8V Dropout Voltage VDROP IOUT=300mA, 210 VOUT=2.8V VIN=3.6V to 5.5V ΔVLINE 0.05 Line Regulation(Note 7) IOUT=1mA ΔVLOAD 1mA 25mΩ on the BL9193 output ensures stability. The BL9193 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 BL9193 and returned to a clean analog ground. Bypass Capacitor and Low Noise Connecting a 22nF between the BP pin and GND pin significantly reduces noise on the regulator output, it is critical that the capacitor connection between the BP pin and GND pin be direct and PCB traces should be as short as possible. There is a relationship between the bypass capacitor value and the LDO regulator turn on time. DC leakage on this pin can affect the LDO regulator output noise and voltage regulation performance. Enable Function The BL9193 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 protect the www.belling.com.cn BL9193 Rev 2.5 Belling Proprietary Information. Unauthorized Photocopy and Duplication Prohibited © 2011 Belling All Rights Reserved 7 BL9193 300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator system, the BL9193 have a quick disOUTPUT R1 R2 C1 charge function. If the enable function is VOLTAGTE not needed in a specific application, it may 1.8V 13.9 kΩ 30.1 kΩ 22pF be tied to VIN to keep the LDO regulator in 2.5V 31.6 kΩ 30.1 kΩ 22pF Step-Down a continuously on state. 3.3V Converter 51 kΩ 30.1 kΩ 22pF 3.6V 59 kΩ 30.1 kΩ 22pF , Programming the BL9193 Adjustable LDO regulator BL9193 Adjustable LDO regulator The output voltage of the BL9193 adjustable regulator is programmed using an external resistor divider as show in Figure as below. The output voltage is calculated using equation as below: R1   VOUT = VREF  1 +   R2  Where: VREF=1.23V typ (the internal reference voltage) Resistors R1 and R2 should be chosen for approximately 50uA divider current. Lower value resistors can be used for improved noise performance, but the solution consumes more power. Higher resistor values should be avoided as leakage current into/out of FB across R1/R2 creates an offset voltage that artificially increases/decreases the feedback voltage and thus erroneously decrease/increases VOUT. The recommended design procedure is to choose R2=30.1kΩ to set the divider current at 50uA, C1=22pF for stability, and then calculate using Equation as below:  VOUT  R1 =  − 1  R 2  VREF  In order to improve the stability of the adjustable version, it is suggested that a small compensation capacitor be placed between OUT and FB. The suggested value of this capacitor for several resistor ratios is shown in the table below. OUTPUT VOLTAGE PROGRAMMING GUIDE Programming VIN 1 VIN VOUT 5 VOUT 1uF 1uF 2 R1 GND BL9193 -ADJ 3 EN FB 4 R2 Thermal Considerations Thermal protection limits power dissipation in BL9193. When the operation junction temperature exceeds 165°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 = (VIN−VOUT) ×IOUT + VIN×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 following formula： PD(MAX) = ( TJ(MAX) − TA ) /θJA Where TJ(MAX) is the maximum operation junction temperature 125°C, TA is the www.belling.com.cn BL9193 Rev 2.5 C1 Belling Proprietary Information. Unauthorized Photocopy and Duplication Prohibited © 2011 Belling All Rights Reserved 8 BL9193 300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator ambient temperature and the θJA is the junction to ambient thermal resistance. For TJ=TA+PD×θJA=40°C+0.15W×250°C/W recommended operating conditions spe=40°C+37.5°C=77.5°C