Preliminary Datasheet LP3110 High Performance Regulated Charge Pump General Description Features The LP3110 is a high performance charge pump DC/DC converter that produces a regulated 5V output. No external inductor is required for operation. The operating voltage range is 2.6V to Vout. Internal soft-start circuitry effectively reduces the in-rush current both while start-up and mode change. The LP3110 features very low quiescent current, over current protection and short circuit protection. The LP3110 is available in SOT-23-6 package. Order Information LP3110 - □ □ 2X Mode for Ultra-High Efficiency 2.8V to Vout Range Input Voltage Soft Start Function Built-In Short-Circuit Protection 1.2MHz Fixed frequency Built-in Thermal Protection Over Current Protection Function IQ<1uA in Shutdown SOT23-6 Package RoHS Compliant and 100% Lead (Pb)-Free Typical Application Circuit □ 5 4 1uF Vout_5V C- Vin C+ Package Type B6: SOT23-6 6 F: Pb-Free OUT Vin 1 2.2uF 2.2uF 3 Chip Enable EN LP3110 GND 2 Applications LCD Panel Cellular and Smart mobile phone PDA/DSC Marking Information Please see website. Flash LED Driver LP3110 – Ver. 1.1 Datasheet Feb.-2008 Page 1 of 9 Preliminary Datasheet LP3110 Functional Pin Description P a c k a g e Ty p e Pin Configurations SOT23-6 PIN 1 NAME VOUT DESCRIPTION Output Voltage 2 GND Ground 3 EN Chip Enable (Active High) 4 CN Flying Capacitor Negative Terminal 5 VIN Power Input Voltage 6 CP Flying Capacitor Positive Terminal Function Block Diagram Absolute Maximum Ratings Input Voltage to GND (VIN) ------------------------------------------------------------------------------------ 6V EN to GND Voltage (Ven) --------------------------------------------------------------------- 0.3V to Vin+0.3V Maximum DC Output Current(Iout) ----------------------------------------------------------------------- 150mA Operating Junction Temperature Range (TJ) ---------------------------------------------------- 40℃ to 150℃ Maximum Soldering Temperature (at leads, 1 0sec) ----------------------------------------------------- 260℃ LP3110 – Ver. 1.1 Datasheet Feb.-2008 Page 2 of 9 Preliminary Datasheet LP3110 Electrical Characteristics (Over recommended operating conditions unless specified otherwise) VIN =3.6V,EN=High, TA=25℃ ) Parameter Symbol Conditions Min. 2.8 LP3110 Typ. Max. Vout Unit VOUT Input Voltage Output Voltage Range IQ Quiescent Current No Load 150 450 µA ISHDN Shutdown Current EN = GND 1 5 µA FOSC Oscillator Frequency 1.2 1.4 MHz ISC Output short Circuit Current Limit Vout<0.5V 350 400 mA VEN(L) Enable Threshold Low 0.4 V VEN(H) Enable Threshold High IEN Input Low Current VIN LP3110 – Ver. 1.1 Datasheet Feb.-2008 V V 5 0.8 250 1.4 VIN = VEN = 5.5V -1 V 1 Page 3 of 9 µA Preliminary Datasheet LP3110 Typical Operating Characteristics LP3110 – Ver. 1.1 Datasheet Feb.-2008 Page 4 of 9 Preliminary Datasheet LP3110 – Ver. 1.1 Datasheet Feb.-2008 LP3110 Page 5 of 9 Preliminary Datasheet LP3110 – Ver. 1.1 Datasheet Feb.-2008 LP3110 Page 6 of 9 Preliminary Datasheet LP3110 Up to 6pcs White/Blue LED C- 5 1uF C+ Vin 4 6 Application Information 1 OUT Vin 2.2uF 2.2uF 3 Chip Enable EN LP3110 2 GND 82R 82R 82R 82R 82R 82R 6 1uF C- 5 C+ Vin 4 Figure2: Up to 6pcs White/Blue LED Driver from Li-Ion Battery Source OUT Vin Up to 120mA 1 2.2uF 10uF 3 Chip Enable EN LP3110 GND LOAD 2 Vin C- 5 1uF C+ Vin 4 6 Figure3: Step-up to 5V with loading application from Li-Ion Battery Source OUT Vout_5V 1 2.2uF 10uF 3 Chip Enable EN LP3110 GND 2 Figure4: Step-up to 5V with LCD Vbais application from Li-Ion Battery Source LP3110 – Ver. 1.1 Datasheet Feb.-2008 Page 7 of 9 6 1uF Vin OUT 1 2.2uF 10uF 3 Chip Enable LP3110 Flash WLED Driver Up to 150mA C- 5 C+ Vin 4 Preliminary Datasheet LP3110 EN GND 2 C- 5 1uF C+ Vin 4 6 100R Vin OUT Flash WLED Driver Up to 350mA 1 2.2uF 10uF 3 EN LP3110(A) GND 2 10R 10R ON/OFF 4 1uF C- 5 C+ 6 Chip Enable Vin OUT 1 100K 10uF 3 EN LP3110(B) GND 2 Figure6: Large Current Flash LED Driver from Li-Ion Battery Source LP3110 – Ver. 1.1 Datasheet Feb.-2008 Page 8 of 9 Preliminary Datasheet LP3110 Packaging Information SOT23-6 Package LP3110 – Ver. 1.1 Datasheet Feb.-2008 Page 9 of 9