LC3030C High Efficiency, Multi-Function Step-up DC/DC Controller DESCRIPTION FEATURES Deliver 500mA at 4.0V Output voltage LC3030C series are CMOS-based PFM step- with 2V input Voltage up DC-DC Controller with low supply current The controller output voltage can be and high output voltage accuracy. Quiescent adjusted from 2.5V6.0V(In 0.1V step) current drawn from power source is as low as Output voltage accuracy -----------2 6uA. It is capable of delivering 500mA output current at 4.0V output with 2V input Voltage. Low temperature-drift coefficient of the Only four external components are necessary: output voltage------------------100ppm/ An inductor, a Schottky diode, an output filter Only four external components are capacitor and a NMOSFET or a NPN necessary: An inductor, a Schottky diode, transistor All of these features make an output filter capacitor and a NMOSFET LC3030C series be suitable for the portable or a NPN transistor devices, which are supplied by a single High power conversion efficiency---90 battery to four-cell batteries. Low quiescent current drawn from power LC3030C has a drive pin (EXT) for external source---------------------------------------- 6uA transistor. So it is possible to load a large Small package----- SOT-23-3, SOT-23-5 output current with a power transistor which has a low voltage dropout. LC3030C integrates stable reference circuits APPLICATIONS and trimming technology, so it can afford high precision and low temperature-drift coefficient Power source for PDA, DSC, MP3 Player, of the output voltage. electronic toy and wireless mouse LC3030C is available in SOT-23-3 and SOT- Power source for a single or dual-cell 23-5 packages which are PB free. And in battery-powered equipments SOT-23-5 the device can be switch on or off Power source for LED easily by CE pin, to minimize the standby supply current. ELECTRICAL CHARACTERISTICS TYPICAL APPLICATION www.leadchip.com.cn 1 Your final power solution Copyright 2007, Leadchip semi LC3030C ORDERING INFORMATION ABSOLUTE MAXIMUM RATING Parameter Value LC3030C 1 2 3 4 Input Voltage Range -0.3V-12V Code Description Input Voltage: V(EXT) -0.3V-(VOUT+0.3) Temperature&Rohs: CE Pin Voltage -0.3V-(VOUT+0.3) 1 C: -40~85C , Pb Free Rohs Lx Pin Output Current 0.7A Std. Operating Junction 125C Package type: Temperature (Tj) 2 B3: SOT-23-3 Ambient Temperature -40C -85C (Ta) B5: SOT-23-5 Power SOT-23-3 250mW Packing type: 3 Dissipation SOT-23-5 250mW TR: Tape&Reel (Standard) Storage Temperature -40C -150C Output voltage: (Ts) e.g. 25=2.5V 4 Lead Temperature & 260C,10S 56=5.6V Time 60=6.0V Note: Exceed these limits to damage to the device. MARKING INFORMATION Exposure to absolute maximum rating conditions may affect device reliability. Product LC3030CCB3TR Classification RECOMMENDED WORK Marking CONDITIONS 3C:Product Parameter Value Code Input Voltage Range 0.8V-Vout 3CXX Inductor 10-100uH XX: Output Input Capacitor 10uF Voltage Output Capacitor 47-220uF Ambient Temperature -40C -85C Product LC3030CCB5TR (Ta) Classification Marking Suggestion: Use tantalum type capacitor to reduce the ripple of the output voltage. Use 1nF 3C:Product filter ceramic type capacitor to connect OUT pin Code and GND pin. The filter capacitor is recommended as close as possible to OUT pin and GND pin. 3CXX XX: Output Voltage CE Chip Enable (Active high) GND Ground Pin OUT Output Pin, Power supply for internal EXT Switching Pin NC No Connection www.leadchip.com.cn 2 Your final power solution Copyright 2007, Leadchip semi