LC3030CCB5TR50

LC3030C High Efficiency, Multi-Function Step-up DC/DC Controller DESCRIPTION FEATURES • LC3030C series are CMOS-based PFM stepup DC-DC Controller with low supply current and high output voltage accuracy. Quiescent current drawn from power source is as low as 6uA. It is capable of delivering 500mA output current at 4.0V output with 2V input Voltage. Only four external components are necessary: An inductor, a Schottky diode, an output filter capacitor and a NMOSFET or a NPN transistor All of these features make LC3030C series be suitable for the portable devices, which are supplied by a single battery to four-cell batteries. LC3030C has a drive pin (EXT) for external transistor. So it is possible to load a large output current with a power transistor which has a low voltage dropout. LC3030C integrates stable reference circuits and trimming technology, so it can afford high precision and low temperature-drift coefficient of the output voltage. LC3030C is available in SOT-23-3 and SOT23-5 packages which are PB free. And in SOT-23-5 the device can be switch on or off easily by CE pin, to minimize the standby supply current. • • • • • • • APPLICATIONS • • • ELECTRICAL CHARACTERISTICS www.leadchip.com.cn Copyright@2007, Leadchip semi Deliver 500mA at 4.0V Output voltage with 2V input Voltage The controller output voltage can be adjusted from 2.5V～6.0V(In 0.1V step) Output voltage accuracy -----------±2％ Low temperature-drift coefficient of the output voltage------------------±100ppm/℃ Only four external components are necessary: An inductor, a Schottky diode, an output filter capacitor and a NMOSFET or a NPN transistor High power conversion efficiency---90％ Low quiescent current drawn from power source---------------------------------------- 6uA Small package----- SOT-23-3, SOT-23-5 Power source for PDA, DSC, MP3 Player, electronic toy and wireless mouse Power source for a single or dual-cell battery-powered equipments Power source for LED TYPICAL APPLICATION 1 Your final power solution LC3030C ORDERING INFORMATION ABSOLUTE MAXIMUM RATING LC3030C □ 1 □ 2 □ 3 □ 4 Code Description Temperature&Rohs: C: -40~85°C , Pb Free Rohs Std. Package type: B3: SOT-23-3 B5: SOT-23-5 Packing type: TR: Tape&Reel (Standard) Output voltage: e.g. 25=2.5V 56=5.6V 60=6.0V 1 □ 2 □ 3 □ 4 □ Parameter Input Voltage Range Inductor Input Capacitor Output Capacitor Ambient Temperature (Ta) XX: Output Voltage LC3030CCB5TR□□ Marking CE 260°C,10S Value 0.8V-Vout 10-100uH ≥10uF 47-220uF -40°C -85°C Suggestion: Use tantalum type capacitor to reduce the ripple of the output voltage. Use 1nF filter ceramic type capacitor to connect OUT pin and GND pin. The filter capacitor is recommended as close as possible to OUT pin and GND pin. 3C:Product Code 3CXX 250mW 250mW -40°C -150°C RECOMMENDED WORK CONDITIONS 3C:Product Code Product Classification -40°C -85°C LC3030CCB3TR□□ Marking 3CXX Value -0.3V-12V -0.3V-(VOUT+0.3) -0.3V-(VOUT+0.3) 0.7A 125°C Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability. MARKING INFORMATION Product Classification Parameter Input Voltage Range Input Voltage: V(EXT) CE Pin Voltage Lx Pin Output Current Operating Junction Temperature (Tj) Ambient Temperature (Ta) Power SOT-23-3 Dissipation SOT-23-5 Storage Temperature (Ts) Lead Temperature & Time XX: Output Voltage Chip Enable (Active high) GND Ground Pin OUT Output Pin, Power supply for internal EXT Switching Pin NC No Connection www.leadchip.com.cn Copyright@2007, Leadchip semi 2 Your final power solution LC3030C ELECTRICAL CHARACTERISTICS Default condition (unless otherwise provided): Vin=0.6×Vout, Iout=10mA, Temperature=25℃, Use external circuit in test circuit list SYMBOL ITEM Vout Output Voltage Vin Input Voltage Iin Input Current * (No load) IDD Quiescent current * Istandby VCEH VCEL Fosc ICEH ICEL Chip leakage current CE “H” threshold voltage CE “L” threshold voltage Oscillator frequency CE “H” CE “L” IEXTH EXT”H” output current IEXTL EXT”H” output current Duty Oscillator duty cycle TEST CONDITIONS REFERENCE DATA MIN TYP. MAX 2.45 2.5 2.55 2.646 2.7 2.754 2.94 3.0 3.06 3.234 3.3 3.366 3.528 3.6 3.672 3.92 4.0 4.08 4.9 5.0 5.1 5.88 6.0 6.12 12 Iout=0mA， Vin=Vout*0.6 No external component, Vout =Vout×1.05 uA 6 15 uA 1 uA V VCE： 2→0V 0.3 On（Vlx“L”）side V 25 0.8 Vout=Vout*0.96 Test EXT pin frequency Vout=VCE=6V Vout=VCE=6V 3.0V