BL8072 BELLING | Alldatasheet
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www.belling.com.cn 1 2A Low Consumption Linear Regulator BL8072
DESCRIPTION
BL8072 is a series of low power consumption, low dropout voltage regulator with a typical dropout voltage of 1.0V at 2A load current. BL8072 can provide output value in the range of 1.2V~5.0V in 0.1V steps. It also can customized on command. Other than every voltage version can be used as an adjustable voltage version, with which desired voltage can be achieved by setting the values of two external resistors of the application circuitry. BL8072 has well load transient response and good temperature characteristic, And it uses trimming technique to guarantee output voltage accuracy within±2%. BL8072 series is available in standard packages of SOT-223 and TO-252.
FEATURES
Low Power Consumption:3.0uA (Typ.) Maximum output current : 2A Maximum input voltage: 18V Line regulation: 0.2% (Typical) Output Voltage Range:1.2V~5.0V (customized on command in 0.1V steps) Highly Accurate:±2%(±1% customized) Typical Dropout Voltage: 850mV@1.5A (Vout=3.3V) Operation environment Temperature: -40 ~85
APPLICATIONS
Battery Charger Battery Powered equipment Post Regulators for Switching Supplies Reference Voltage Source Regulation after Switching Power TYPICAL APPLICATION GND VoutVin CoutCin VoutVin LC1222 Fig1. BL8072 fixed voltage application circuit Note: Input capacitor (C in=1uF) and Output capacitor (Cout=1uF) are recommended in all application circuit. ceramic capacitor is recommended.
ELECTRICAL CHARACTERISTICS
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 Dropout (V) Iout(A) Dropout Vout=1.2V Vout=3.3V Vout=5.0V BL8072
www.belling.com.cn 2 BL8072
ORDERING INFORMATION
□1 Temperature&Rohs: C: -40~85C, Pb Free Rohs Std. Package type: L: SOT-223 O:TO-252 □3 Packing type: TR: Tape&Reel (Standard) Output voltage: e.g. 18=1.8V 33=3.3V 50=5.0V Voltage accuracy: Blank(default):±2% 1: ±1% ABSOLUTE MAXIMUM RATING Parameter Value Max Input Voltage 20V Operating Junction Temperature(Tj) 125C Ambient Temperature(Ta) -40C –85C Package Thermal Resistance SOT-223 20C / W TO-252 12C / W Storage Temperature(Ts) -40C -150C Lead Temperature & Time 260C,10S Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability. RECOMMENDED WORK CONDITIONS Parameter Value Input Voltage Range Max.18V Ambient Temperature -40C –85C PIN CONFIGURATION Product Classification BL8072CLTR□□ JJ: Product Code XX: Output Voltage LL: Lot No. YYWW: Date Code Product Classification BL8072COTR□□ JJ: Product Code TO-252 XX: Output Voltage LL: Lot No. YYWW: Date Code YY: The Year of manufacturing, ”11” stands for year 2011, ”12” stands for year 2012, and “28”stands for year2028. WW: The week of manufacturing. ”01” stands for week 1, ”02” stands for week 02, ”52” stands for week 52.
www.belling.com.cn 3 BL8072 (Test Conditions: Cin=1uF, Cout=1uF, TA=25C, Unless Otherwise Specified) Symbol Parameter Conditions Min Typ Max Unit Vin Input Voltage 18 V Vout Output Voltage Vout x0.98 Vout X1.02 V Iout(Max.) Maximum Output Current Vin-Vout=1.9V Vout <1.5V 2 A Vin-Vout=1.5V 1.5VVout<2.0V Vin-Vout=1V Vout 2.0V Dropout Voltage Input-Output Voltage Differential (note 3) Iout1.5A Vout <1.5V 1600 1800 mV 1.5VVout<2.0V 1200 1400 Vout 2.0V 850 950 VoutVin Vout Line Regulation (note 1) Iout=10mA Set Vout+1V≤Vin≤18V 0.1 0.3 %/V Vout Load Regulation (note 1,2) 1mA≤Iout≤1.5A Vout <1.5V 40 60 mV 1.5VVout<2.0V 20 40 Vout 2.0V 10 30 Iq Quiescent Current Vin=Set Vout+1V 3.0 5.0 uA VoutT Vout Output Voltage Temperature Coefficient Iout=100mA 200 ppm/C JC Thermal Resistance junction to case SOT-223 TO-252 20 12 C / W Note1: Line Regulation and Load Regulation in Table1 are tested under constant junction temperature. Note2: When load current varies between 0~ 2A and Vin-Vout ranges from 1V~18V at constant junction temperature, the parameter is satisfied the criterion in table. Note3: Dropout Voltage is the voltage difference between the input and output pin when the input voltage is minimum to maintain the lowest spec output voltage. BLOCK DIAGRAM
www.belling.com.cn 4 BL8072 DETAILED DESCRIPTION BL8072 is a series of low dropout voltage and low power consumption regulator. Its application circuitry requires minimum number of external components. Both fixed voltag e and adjustable voltage application circuits need input and output capacitors to assure output voltage stability. Any desired output voltage from fixed voltage to 18V can be achieved by assigning proper values to two external resistors in its application circuitry (as shown in Fig.3, as R1, R2 are the two external resistors.). BL8072 uses trimming technique to assure the accuracy of output value within ±2%, at the same time, temperature compensation is elaborately considered in this chip, which makes BL8072’s temperature coefficient within 100ppm/℃。 TYPICAL APPLICATION BL8072 has fixed voltage and adjustable voltage application mode , Fig.4 shows their typical application circuitry. A 1 uF ceramic capacitor connected between input and GND as bypass capacitor and a 1uF ceramic capacitor between output and GND are recommended for all application. Using a bypass capacitor (C Adj) between the adjust terminal and ground can improve ripple rejection. The bypass capacitor prevents ripple from being amplified in case the output voltage is increased. The impedance of C Adj should be less than the resistance of R 1 to prevent ripple from being amplified at any frequency. As R1 is normally in the range of 1KΩ~10KΩ, the value of C Adj should satisfy the following condition: 1/(2* FrequencyRipple *Cadj)<R1 A 0.1µF ceramic capacitor is recommended. Fig 3. Typical Application of BL8072 EXPLANATION The output voltage of adjustable application satisfies this followed equation: Vout=VRef× (1+R2/R1)+IAdj×R2. The second term I Adj×R2 can be ignored since the adjustable pin current IAdj (~ 2µA) is much less than the current through R1 (~1mA). The value of R1 is preferred in the range of 1KΩ～10KΩ and the value of VRef is the output voltage of typical fixed voltage application circuit.
www.belling.com.cn 5 BL8072 TYPICAL PERFORMANCE CHARACTERISTICS 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Vout (V) Iout(A) Load Regulaion (Vout=1.2V) Vin=3V Vin=4V Vin=5V Vin=10V 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Vout (V) Iout(A) Load Regulaion (Vout=3.3V) Vin=4.3V Vin=5V Vin=6V Vin=10V Vout (V) Iout(A) Load Regulaion (Vout=5.0V) Vin=6V Vin=7V Vin=8V Vin=10V 0 3 6 9 12 15 18 Vout (V) Vin(V) Line Regulaion Vout=1.2V Vout=1.8V Vout=3.3V Vout=5.0V 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 Dropout (V) Iout(A) Dropout Vout=1.2V Vout=3.3V Vout=5.0V 0 3 6 9 12 15 18 Iq (uA) Vin (V) IQ
www.belling.com.cn 6 BL8072 Line Transient Response Load Transient Response Iout=100mA,Vin=3.3V to 4.3V Vin=3.3V, Iout=0.1A to 1A (Orange: Vin, Green: Vout) (Pink: Iout, Green: Vout) PACKAGE LINE Package TO-252 Devices per reel 2500 Unit mm Package specification：
www.belling.com.cn 7 BL8072 Package SOT-223 Devices per reel 2500 Unit mm Package specification：