BL8072 2A Low Consumption Linear Regulator DESCRIPTION FEATURES 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. APPLICATIONS 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. TYPICAL APPLICATION Vin Vin Cin 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: [email protected] (Vout=3.3V) Operation environment Temperature: -40 ~85 Battery Charger Battery Powered equipment Post Regulators for Switching Supplies Reference Voltage Source Regulation after Switching Power ELECTRICAL CHARACTERISTICS Vout LC1222 BL8072 GND Dropout Vout 2.0 1.8 Cout 1.6 Dropout (V) 1.4 Fig1. BL8072 fixed voltage application circuit 1.0 0.8 0.6 Vout=1.2V Vout=3.3V Vout=5.0V 0.4 Note: Input capacitor (Cin=1uF) and Output capacitor (Cout=1uF) are recommended in all application circuit. ceramic capacitor is recommended. www.belling.com.cn 1.2 0.2 0.0 0.0 1 0.5 1.0 Iout(A) 1.5 2.0 BL8072 ORDERING INFORMATION PIN CONFIGURATION BL8072 □ 1□ 2□ 3□ 4□ 5 Code Product Classification JJ: Product Code XX: Output Voltage LL: Lot No. 1 □ 2 □ 3 □ 4 □ 5 □ Description Temperature&Rohs: C: -40~85C, Pb Free Rohs Std. Package type: L: SOT-223 O:TO-252 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% BL8072CLTR□□ YYWW: Date Code Product Classification JJ: Product Code XX: Output Voltage LL: Lot No. BL8072COTR□□ TO-252 YYWW: Date Code ABSOLUTE MAXIMUM RATING Parameter Max Input Voltage Operating Junction Temperature(Tj) Ambient Temperature(Ta) Package SOT-223 Thermal TO-252 Resistance Storage Temperature(Ts) Lead Temperature & Time XX: Output voltage code, e.g. 12=1.2V, 25=2.5V, 33=3.3V; 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. Value 20V 125C -40C –85C 20C / W 12C / W -40C -150C 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 Input Voltage Range Ambient Temperature www.belling.com.cn Value Max.18V -40C –85C 2 BL8072 ELECTRICAL CHARACTERISTICS (Test Conditions: Cin=1uF, Cout=1uF, TA=25C, Unless Otherwise Specified) Symbol Vin Parameter Output Voltage Iout(Max.) Maximum Output Current Vout Vin Vout Input-Output Voltage Differential (note 3) Vin-Vout=1.9V Vin-Vout=1.5V Vin-Vout=1V Vout <1.5V Iout1.5A 1.5VVout<2.0V 1.5VVout<2.0V Vout 2.0V Vout <1.5V Max Unit 18 Vout X1.02 V 2 V A 1600 1200 850 1800 1400 950 mV 0.1 0.3 %/V Vin=Set Vout+1V 40 20 10 3.0 60 40 30 5.0 Iout=100mA 200 ppm/C SOT-223 TO-252 20 12 C / W Vout 2.0V Iout=10mA Set Vout+1V≤Vin≤18V Vout Load Regulation (note 1,2) 1mA≤Iout≤1.5A Iq Quiescent Current Output Voltage Temperature Coefficient Thermal Resistance junction to case JC Typ Vout x0.98 Line Regulation (note 1) Vout T Vout Min Input Voltage Vout Dropout Voltage Conditions Vout <1.5V 1.5VVout<2.0V Vout 2.0V mV uA 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 3 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 voltage 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 1uF 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 (CAdj) 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 CAdj should be less than the resistance of R1 to prevent ripple from being amplified at any frequency. As R1 is normally in the range of 1KΩ~10KΩ, the value of CAdj 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 IAdj×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 4 BL8072 TYPICAL PERFORMANCE CHARACTERISTICS Load Regulaion Load Regulaion (Vout=1.2V) 3.5 1.2 3.0 1.0 Vout (V) Vout (V) (Vout=3.3V) 4.0 1.4 0.8 0.6 2.5 2.0 1.5 0.4 0.2 0.0 0.0 0.5 1.0 Iout(A) 1.5 Vin=4.3V Vin=5V Vin=6V Vin=10V 1.0 Vin=3V Vin=4V Vin=5V Vin=10V 0.5 0.0 2.0 0.0 0.5 Load Regulaion 1.5 2.0 Line Regulaion (Vout=5.0V) 6 1.0 Iout(A) 6 5 5 Vout (V) Vout (V) 4 4 3 2 3 2 1 Vin=6V Vin=7V Vin=8V Vin=10V 1 0 0.0 0.5 0 0 1.0 Iout(A) 1.5 3 2.0 6 12 Vout=1.2V Vout=3.3V Dropout 15 18 Vout=1.8V Vout=5.0V IQ 2.0 16 1.8 14 1.6 12 Iq (uA) 1.4 Dropout (V) 9 Vin(V) 1.2 1.0 0.8 10 8 6 0.6 0.4 0.2 Vout=1.2V 4 Vout=3.3V 2 Vout=5.0V 0.0 0.0 0.5 www.belling.com.cn 1.0 Iout(A) 1.5 0 2.0 0 5 3 6 9 Vin (V) 12 15 18 BL8072 Line Transient Response Load Transient Response Iout=100mA,Vin=3.3V to 4.3V (Orange: Vin, Green: Vout) Vin=3.3V, Iout=0.1A to 1A (Pink: Iout, Green: Vout) PACKAGE LINE Package TO-252 Devices per reel 2500 Package specification： www.belling.com.cn 6 Unit mm BL8072 Package SOT-223 Devices per reel 2500 Package specification： www.belling.com.cn 7 Unit mm