Leshan Radio Co ., Ltd LR6156 Dual 300mA High PSRR LDO FEATURES DESCRIPTION • • • • • • • • • • • • The LR6156 is a dual,low-noise,lowdropout regulator delivering at least 300mA of continuous output current. The output voltage for each regulator is set independently by trimming.Voltages are selectable in 100mV steps within a range of 1.5V to 4.5V.Typical output noise is 47uVrms,and PSRR is 73dB at 100Hz. The LR6156 includes two independent logic-controlled shutdown inputs and allows the output of each regulator to be turned of independently. Two low dropout voltage regulators 300mA output current for each LDO 20uA operating supply current per LDO Low 47uVRMS output noise Standby Mode: 0.1uA Low 160mV dropout at 300mA load 73dB PSRR at 100Hz Excellent Line regulation: 0.05%/V Independent Shutdown controls 1.5V to 4.5V Factory-Preset Output Output Current Limit High Accuracy: ±2% (±1% customized) APPLICATIONS • • • • • • Cellular phones Cordless phones and radio communication equipment Battery Powered equipment Notebook and hand-hold equipment Wireless LAN GPS receivers The LR6156 has excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. And it uses trimming technique to guarantee output voltage accuracy within±2%. The LR6156 is available in SOT-23-6 package which is lead(Pb)- free ORDERING INFORMATION LR6156 –X X XX Package:R6:SOT-23-6 Operating temperature range C:commercial standard P：Pb free Output Voltage： Code B C D E G H I J Vout1 1.5V 1.5V 1.5V 1.5V 1.8V 1.8V 1.8V 1.8V Vout2 2.8V 3.0V 3.3V 4.0V 2.5V 2.8V 3.0V 3.3V Code M O P Q R S T W Vout1 2.8V 2.8V 2.8V 3.0V 3.0V 3.0V 3.3V 2.5V The LR6156 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. Vout2 1.8V 2.8V 3.0V 2.5V 3.0V 3.3V 1.8V 3.0V TYPICAL APPLICATION APPLICATION HINTS NOTE:Input capacitor (Cin=1uF) and Output capacitor (Cout=1uF/3.3uF) arerecommended in all application circuit. 1/7 Leshan Radio Co ., Ltd MARKING DESCRIPTION L: Product Code X: Output Voltage Code B C D E G H I J Vout1 1.5V 1.5V 1.5V 1.5V 1.8V 1.8V 1.8V 1.8V Vout2 2.8V 3.0V 3.3V 4.0V 2.5V 2.8V 3.0V 3.3V Code M O P Q R S T Vout1 2.8V 2.8V 2.8V 3.0V 3.0V 3.0V 3.3V Vout2 1.8V 2.8V 3.0V 2.5V 3.0V 3.3V 1.8V Z: The Year of manufacturing,”7” stands for year 2007,”8” stands for year 2008,and “ 0 ” stands for year 2010. Z: The week of manufacturing. ”A” stands for week 1,”Z” stands for week 26,” A ” stands for week 27,” Z ” stands for week 52. PIN CONFIGURATION Product Classification LR6156-XXXX Marking L:Product Code LXZZ X:Output Voltage ZZ:Data Code Vss Ground Pin Vin Supply Voltage Input Vout1 CH1 Output Voltage CE1 Chip Enable1 CE2 Chip Enable2 Vout2 CH2 Output Voltage ABSOLUTE MAXIMUM RATING Parameter Max Input Voltage Operating Junction Temperature(Tj) Ambient Temperature(Ta) Power SOT-23-6 Dissipation Storage Temperature(Ts) Lead Temperature & Time Value 8V 125°C -40°C -85°C 250mW -40°C -150°C 260°C,10S Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability. 2/7 Leshan Radio Co ., Ltd RECOMMENDED WORK CONDITIONS Parameter Value Input Voltage Range Ambient Temperature Max. 6V -40°C –85°C ELECTRICAL CHARACTERISTICS （Test Conditions: Cin=1uF,Cout=3.3uF,TA=25°C, unless otherwise specified. ） LR6156, For Arbitrary Output Voltage Symbol Parameter Vin Input Voltage Vout Output Voltage Iout (Max.) Maximun Output Current Vdrop Dropout Voltage,Vout≥2.8V ∆Vout ∆Vin ⋅ Vout Line Regulation ∆Vout / ∆Iout Load Regulation Iss ∆Vout ∆T ⋅ Vout Supply Current Supply Current (Srandby) Output Voltage Temperature Coefficiency PSRR Ripple Rejection Ilim Short Current Limit CE Pull down Resistance CE Input Voltage “H” CE Input Voltage “L” Output Noise Istandby Rpd Vceh Vcel en Conditions Min Typ Vin=Set Vout+1V 1mA≤Iout≤30mA Vout x0.98 Vout1 Vin-Vout=1V 300 Max 6 Vout X1.02 Units V V mA Iout=100mA 50 80 mV Iout=300mA 160 220 mV Iout=40mA 2.8V≤Vin≤6V 0.05 0.2 %/V 30 50 mV 20 30 uA 0.1 1.0 uA Vin=Set Vout+1V 1mA≤Iout≤300mA Vin=Set Vout+1V Vin=Set Vout+1V Vce=GND Iout=30mA F=100Hz, Ripple=0.5Vp-p Vin=Set Vout+1V Vout=0V 2.0 BW=10Hz~100kHz 1.5 0 ±100 ppm/°C 73 dB 500 mA 5.0 47 10.0 MΩ Vin 0.25 V V uVrms 3/7 Leshan Radio Co ., Ltd BLOCK DIAGRAM Explanation LR6156 series are highly accurate ,Dual,low noise,CMOS low dropout voltage regulators. The output voltage for each regulator is set independently by trimming. Voltages are selectable in 100mV steps within a range of 1.5V to 4.5V . It also can be customized on command. LR6156 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. LR6156 has excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. And it uses trimming technique to guarantee output voltage accuracy within±2%. 4/7 Leshan Radio Co ., Ltd TYPICAL PERFORMANCE CHARACTERISTICS 1) Output Voltage vs. Output Current (with output short protection) 2) Output Voltage vs. Input Voltage Line Regulation Current limit Vs. Vout 3.5 3.313 3 3.3125 VOUT(V) Vout(V) 2.5 2 3.312 3.3115 1.5 3.311 1 3.3105 0.5 3 3.5 4 0 0 200 400 600 800 1000 1200 1400 5 5.5 6 1600 Iload(mA) Iout=14(mA) 3) Dropout Voltage vs. Output Current 4) Ripple rejection vs. Frequency PSRR Dropout & Iout 80 180 160 70 Vout=3.3V 140 60 120 PSRR(dB) Dropout(mV) 4.5 VIN(V) 100 80 60 50 40 30 40 20 20 10 0 0 50 100 150 200 Iout(mA) 250 300 350 Vout=3.3V 0 0.01 0.1 1 10 100 1000 Freq(KHz) 5/7 Leshan Radio Co ., Ltd 5) Line transient response Cin=Cout=1uF Iout=25mA vout=3.3V 5V Vv Vin 4V VV Vout 5V Vv Vin 4V VV Vout 6) Load transient response Cin=Cout=1uF Vin=4.5v Vout=3.3V 50mA Output Current 1mA 50mA 1mA Output Voltage 7) Start up from EN Output Current Output Voltage 8) Shut down from EN Output Output EN EN 6/7 Leshan Radio Co ., Ltd PACKAGE LINE SOT-23-6 Package dimension： Unit: mm 7/7