ME2110A50PG

ME2110 PFM Step-up DC/DC Converter, ME2110 Series General Description Features ME2110 Series is a PFM Step-up DC/DC converter  Low ripple and low noise IC with low supply current by CMOS process. High  Operating voltage range：0.9V~6.0V frequency noise that occurs during switching is  Output voltage range：1.8V~6.0V(step 0.1V) reduced by using advanced circuit designed, output  Output voltage accuracy：±2% voltage is programmable in 0.1V steps between  Output Current：If VIN=1.2V and VOUT=1.9V,then 1.8~6.0V.A low ripple, high efficiency step-up DC/DC IOUT=100mA converter can be constructed of ME2110Xxx with  Low start voltage：≤0.9V(at IOUT =1mA) only three external components.  Maximum Also available is a CE (chip enable) function that reduce power oscillator frequency ： 360KHz (TYP. ME2110C25) dissipation during shut-down mode. ME2110Xxx is  High Efficiency：85% (TYP.) suitable for use with battery-powered instruments  Package： SOT89-3，SOT23-5，SOT23-3 with low noise and low supply current. Selection Guide Typical Application  Power source for battery-powered equipment  Power source for wireless mouse, wireless keyboard, toys, cameras, camcorders, VCRs, PDAs, and hand-held communication equipment  Power source for appliances which require higher cell voltage than that of batteries used in the appliances V05 www.microne.com.cn Page 1 of 15 ME2110 Pin Configuration Pin Assignment TYPE POSTFIX PACKAGE SWITCHING TRANSISTOR CE FUNCTION FEATURE ME2110Axx P SOT89-3 Build in Transistor No Lx ME2110Axx M3 SOT23-3 Build in Transistor No Lx ME2110Cxx M5 SOT23-5 Build in Transistor Yes Lx CE ME2110AXX PIN Number Pin Name Function SOT89-3 SOT23-3 1 1 GND Ground 2 3 VOUT Output voltage monitor, IC internal power supply 3 2 Lx Switch ME2110CXX PIN Number Pin Name Function 1 CE Chip enable 2 VOUT 3 NC NC 4 GND Ground 5 Lx Switch SOT23-5 V05 Output voltage monitor, IC internal power supply www.microne.com.cn Page 2 of 15 ME2110 Absolute Maximum Ratings PARAMETER SYMBAL RATING UNIT VIN Input Voltage VIN 6.5 V Lx Pin voltage VLX 6.5 V CE Pin voltage VCE -0.3~ VOUT +0.3 V VOUT=1.9V ILX 800 mA VOUT=2.5V,3.0V,3.3V ILX 1300 mA VOUT=5V ILX 2000 mA Vdd 6.5 V SOT89-3 Pd 500 mW SOT23-5 Pd 300 mW SOT23-3 Pd 300 mW Operating Ambient Temperature TOpr -25~+85 ℃ Storage Temperature Tstg -40~+125 ℃ Soldering temperature and time Tsolder 260℃, 10s Lx Pin current Vdd input voltage Continuous Total Power Dissipation Block Diagram V05 www.microne.com.cn Page 3 of 15 ME2110 Electrical Characteristics ME2110A19 Fosc=150KHz (, VIN=VOUT×0.6，IOUT=10mA，Topt=25℃. Unless otherwise specified) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VOUT× 0.98 VOUT VOUT× 1.02 V VOUT Output Voltage Vstart Oscillation Start-up Voltage IOUT=1mA， VIN：0→2V - 0.80 0.90 V Vhold Oscillation Hold Voltage IOUT=1mA， VIN：2→0V - 0.45 - V IDD1 Supply Current 1 No external component VOUT=VOUT×0.95, - 27 - µA IDD2 Supply Current 2 VOUT=VOUT+0.5V - 4.5 - µA ILX Lx Switching Current VLX=0.4V, VOUT=VOUT×0.95 - 100 - mA ILXleak Lx Leakage Current VOUT=VLX=6V - - 0.5 µA Fosc Oscillation Frequency VOUT=set VOUT×0.95 - 150 - KHz Maxdty Duty Ratio on(VLX“L”)side - 84 - % EFFI Efficiency - 85 - % ME2110C25 Fosc=360KHz (VIN =VOUT×0.6，VCE =VOUT ，IOUT=10mA，Topt=25℃. Unless otherwise specified) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VOUT× 0.98 VOUT VOUT× 1.02 V VOUT Output Voltage Vstart Oscillation Start-up Voltage IOUT=1mA， VIN：0→2V - 0.84 0.90 V Vhold Oscillation Hold Voltage IOUT=1mA， VIN：2→0V - 0.33 - V IDD1 Supply Current 1 No external component VOUT=VOUT×0.95, - 85 - µA IDD2 Supply Current 2 No external component VOUT=VOUT+0.5V - 7 - µA IDD3 Supply Current 3 No external component VOUT=VOUT+0.5V VCE =0V - - 1.0 µA ILX Lx Switching Current No external component VLX=0.4V VOUT= set VOUT×0.95 - 100 - mA ILXleak Lx Leakage Current VOUT=VLX=6V - - 0.5 µA V05 www.microne.com.cn Page 4 of 15 ME2110 Fosc Oscillation Frequency VOUT=set VOUT×0.95 - 360 - KHz Maxdty Duty Ratio on(VLX“L”)side - 77 - % EFFI Efficiency - 85 - % ME2110C33 Fosc=360KHz (VIN =VOUT×0.6， VCE =VOUT ，IOUT=10mA，Topt=25℃. Unless otherwise specified) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VOUT× 0.98 VOUT VOUT× 1.02 V VOUT Output Voltage Vstart Oscillation Start-up Voltage IOUT=1mA， VIN：0→2V - 0.84 0.90 V Vhold Oscillation Hold Voltage IOUT=1mA， VIN：2→0V - 0.33 - V IDD1 Supply Current 1 No external component VOUT=VOUT×0.95, - 110 - µA IDD2 Supply Current 2 No external component VOUT=VOUT+0.5V - 7 - µA Supply Current 3 No external component VOUT=VOUT+0.5V VCE =0V - - 1.0 µA ILX Lx Switching Current No external component VLX=0.4V VOUT= set VOUT×0.95 - 100 - mA ILXleak Lx Leakage Current VOUT=VLX=6V - - 0.5 µA Fosc Oscillation Frequency VOUT=set VOUT×0.95 - 360 - KHz Maxdty Duty Ratio on(VLX“L”)side - 77 - % EFFI Efficiency - 85 - % IDD3 ME2110C50 Fosc=310KHz (VIN =VOUT×0.6， VCE =VOUT ，IOUT=10mA，Topt=25℃. Unless otherwise specified) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VOUT× 0.98 VOUT VOUT× 1.02 V VOUT Output Voltage Vstart Oscillation Start-up Voltage IOUT=1mA， VIN：0→2V - 0.85 0.90 V Vhold Oscillation Hold Voltage IOUT=1mA， VIN：2→0V - 0.38 - V V05 www.microne.com.cn Page 5 of 15 ME2110 IDD1 Supply Current 1 No external component VOUT=VOUT×0.95, - 165 - µA IDD2 Supply Current 2 No external component VOUT=VOUT+0.5V - 8 - µA Supply Current 3 No external component VOUT=VOUT+0.5V VCE =0V - - 1.0 µA ILX Lx Switching Current No external component VLX=0.4V VOUT= set VOUT×0.95 - 110 - mA ILXleak Lx Leakage Current VOUT=VLX=6V - - 0.5 µA Fosc Oscillation Frequency VOUT=set VOUT×0.95 - 310 - KHz Maxdty Duty Ratio on(VLX“L”)side - 74 - % EFFI Efficiency - 85 - % MIN TYP MAX UNITS VOUT× 0.98 VOUT VOUT× 1.02 V IDD3 ME2110A50 Fosc=310KHz (VIN =VOUT×0.6， IOUT=10mA，Topt=25℃. Unless otherwise specified) SYMBOL PARAMETER CONDITIONS VOUT Output Voltage Vstart Oscillation Start-up Voltage IOUT=1mA， VIN：0→2V - 0.85 0.90 V Vhold Oscillation Hold Voltage IOUT=1mA， VIN：2→0V - 0.38 - V IDD1 Supply Current 1 No external component VOUT=VOUT×0.95, - 165 - µA IDD2 Supply Current 2 No external component VOUT=VOUT+0.5V - 8 - µA ILX Lx Switching Current No external component VLX=0.4V VOUT= set VOUT×0.95 - 110 - mA ILXleak Lx Leakage Current VOUT=VLX=6V - - 0.5 µA Fosc Oscillation Frequency VOUT=set VOUT×0.95 - 310 - KHz Maxdty Duty Ratio on(VLX“L”)side - 74 - % EFFI Efficiency - 85 - % Note：1、Diode use Schottky diode such as IN5817 or IN5819 (forward voltage drop:0.2V) 2、Inductor：22μH（r