LP28300AQVF

Preliminary Datasheet LP28300 2A Synchronous Buck Li-ion Charger General Description Features The LP28300 is a 2A Li-Ion battery charger. It utilizes  Input voltage range 4V~18V a 500KHz synchronous buck converter topology to  Dynamic input current allocation for maximum charging rate dissipation, an internal MOSFET allow a physically  2.0A Maximum Charge Current small charger that can be embedded in a wide range  No External MOSFETs and Blocking Diode Required  Efficiency up to 90%  Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheating  Optional Battery Temperature Monitoring Before and During Charge Automatic Sleep Mode for Low-Power in a low profile ESOP8/TDFN-10 3*3mm and package.  Over Current Protection Order Information  Consumption Available in ESOP8/TDFN-10  RoHS Compliant and 100% Lead (Pb)-Free reduce power dissipation during charging. Low power of handheld applications. The LP28300 includes complete charge termination circuitry, automatic recharge. Battery charge current, charge timeout and end-of-charge indication parameters are set with external components. Additional features include shorted cell detection; temperature qualified charging and overvoltage protection. The LP28300 is available LP28300 □ □□ □ □ Battery Voltage Default:4.2V Applications  Portable Media Players  Cellular and Smart mobile phone  PDA/DSC Package Type  Handheld Battery-Powered Devices SP: ESOP8  Handheld Computers QV: TDFN-10  Charging Docks and Cradles H : 4.35V F: Pb-Free Battery cell A: 1 cell B: 2 cell C: 3 cell LP28300-03 Apr.-2018 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 1 of 10 Preliminary Datasheet Marking Information Device LP28300ASPF LP28300AQVF LP28300ASPFH LP28300AQVFH Marking LPS LP28300A YWX LPS LP28300AH YWX Package ESOP8 TDFN-10 Shipping 4K/REEL 5K/REEL Device LP28300BSPF LP28300BQVF ESOP8 TDFN-10 4K/REEL 5K/REEL LP28300CSPF LP28300CQVF Marking LPS LP28300B YWX LPS LP28300C YWX LP28300 Package ESOP8 TDFN-10 Shipping 4K/REEL 5K/REEL ESOP8 TDFN-10 4K/REEL 5K/REEL Marking indication: Y: Year code. W: Week code. X: Batch numbers. Typical Application Circuit VIN VBAT 4.7uH VIN SW RSNS 10uF R3 3.9K R1 100K 25mΩ 47nF PMID 22uF BST 22uF RS REG R4 1.1K R2 100K 2K NTC STAT GND BAT VIN LP28300AQVF LP28300AQVF Application Circuit VIN VBAT 4.7uH VIN SW RSNS 10uF R3 3.9K 47nF R1 100K 25mΩ 22uF BST RS REG R4 1.1K R2 100K 2K NTC STAT GND BAT VIN LP28300ASPF LP28300ASPF Application Circuit LP28300-03 Apr.-2018 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 2 of 10 Preliminary Datasheet LP28300 Functional Pin Description Package Type Pin Configurations SW 1 BST 2 ESOP8 / TDFN-10 STAT 3 NTC 4 GND 9 8 VIN 7 REG 6 RS 5 BAT REG 1 10 RS VIN 2 PMID 3 9 BAT 11 GND 7 STAT SW 4 6 NTC GND 5 ESOP8 8 BST TDFN-10 Pin Description Pin Name Description ESOP8 TDFN-10 SW 1 4 Switch pin. Connect to external inductor. BST 2 8 Internal charge pump boost pin. Open-Drain Charge Status Output. When the battery is charging, this pin is STAT 3 7 pulled low by an internal N-channel MOSFET. When the LP28300 detects an under voltage lockout condition, STAT is forced high impedance. NTC (Negative Temperature Coefficient) Thermistor Input. This pin senses the NTC 4 6 temperature of the battery pack and stops the charger when the temperature is out of range. Connect to GND for disabling this function. BAT 5 9 Battery pin. RS 6 10 Detecting pin of charge current. Input voltage feedback for the input voltage regulation loop. Connect to tap of an REG 7 1 external resistor divider from VIN to GND to program the input voltage regulation. Once the voltage at REG pin drops to the inner threshold, the charge current is reduced to maintain the input voltage at the regulation value. VIN 8 2 GND Pad 5,11 PMID LP28300-03 3 Apr.-2018 Positive Supply Voltage Input. Decouple with a 10µF or larger surface mounted ceramic capacitor. Ground. Power MOS input pin. Connect a 22uF Capacitor to ground. Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 3 of 10 Preliminary Datasheet LP28300 Absolute Maximum Ratings Note 1  VIN /PMID /BST/NTC to GND ----------------------------------------------------------------------------------------- 24V  REG Voltage to GND --------------------------------------------------------------------------------------------------- 6.5V  BAT Pin to GND ---------------------------------------------------------------------------------------------------------- 20V  Maximum Junction Temperature ---------------------------------------------------------------------------------- 150℃  Operating Ambient Temperature Range (TA) -------------------------------------------------------- -40℃ to 85℃  Maximum Soldering Temperature (at leads, 10 sec) --------------------------------------------------------- 260℃ Note 1. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Thermal Information  Maximum Power Dissipation (ESOP8, PD, TA=25℃) ----------------------------------------------------------- 2W  Thermal Resistance (ESOP8, θJA) ----------------------------------------------------------------------------- 50℃/W  Maximum Power Dissipation (TDFN-10, PD, TA=25℃) ------------------------------------------------------- 1.5W  Thermal Resistance (TDFN-10, θJA) --------------------------------------------------------------------------- 65℃/W ESD Susceptibility  HBM(Human Body Mode) --------------------------------------------------------------------------------------------- 2KV  MM(Machine Mode) --------------------------------------------------------------------------------------------------- 200V Recommended Operating Conditions  Operating Junction Temperature Range (TJ) ----------------------------------------------------- -40℃ to 150℃  Ambient Temperature Range --------------------------------------------------------------------------- -40℃ to 85℃ LP28300-03 Apr.-2018 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 4 of 10 Preliminary Datasheet LP28300 Electrical Characteristics (The specifications which apply over the full operating temperature range, otherwise specifications are at TA=25℃, VIN = 5V, unless otherwise noted.) Symbol Parameter VIN Adapter/USB Voltage Range ICC Input Supply Current VFLOAT VRS IBAT Condition Regulated Output (Float) Voltage Program Charging Current (For RS to BAT) BAT Pin Current Min Typ 4 Standby Mode Max Units 18 V 1 (Charge Terminated) mA LP28300AQVF/SPF 4.158 4.2 4.242 LP28300AQVF/SPFH 4.306 4.35 4.395 V LP28300BQVF/SPF 8.4 V LP28300CQVF/SPF 12.6 V VTRIKL