LP28056SPF

Preliminary Datasheet LP28056 1.2A Single-chip Li-ion Battery Charge General Description Features constant-current/  Programmable Charge Current Up to 1200mA for  No MOSFET, Sense Resistor or Blocking Diode Required  Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheating  1µA Supply Current in Shutdown feedback regulates the charge current to limit the die  4.2V Charge Voltage with ± 1% Accuracy temperature during high power operation or high  Short-circuit protection ambient temperature. The charge voltage is fixed at  Consumption Available in ESOP-8 Package 4.2V, and the charge current can be RISET rammed  RoHS Compliant and 100% Lead (Pb)-Free The LP28056 constant-voltage is a complete linear charger single cell lithium-ion batteries. Its ESOP-8 package and low external component count make the LP28056 ideally suited for portable applications. No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. Thermal externally with a single resistor. The LP28056 automatically terminates the charge cycle when the charge current drops to 1/10th the RISET rammed value Applications after the final float voltage is reached. When the input  Portable Media Players/MP3 players  Cellular and Smart mobile phone  PDA/DSC  Bluetooth Applications supply is removed, the LP28056 automatically enters a low current state, dropping the battery drain current to less than 1µA. The LP28056 can be put into shutdown mode, reducing the supply current to 1µA. Other features include charge current monitor, under voltage lockout, automatic recharge and a status pin to indicate charge termination and the presence of an input voltage. Marking Information Device Marking Package Shipping LP28056SPF LPS SP:ESOP-8 2.5K/REEL LP28056 Order Information LP28056 □ □ □ F: Pb-Free YWX Marking indication: Y:Production year W:Production week X:Production batch. Package Type SP: ESOP-8 LP28056-02 Mar.-2017 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 1 of 8 Preliminary Datasheet LP28056 Typical Application Circuit VIN LP28056SPF 4 6 7 10uF 3 VIN BAT STAT2 ISET 5 2 10uF BATTERY STAT1 Riset 1K VSS PGND 9 Functional Pin Description Package Type Pin Configurations ESOP-8 NC 1 ISET 2 VSS 3 VIN 4 PGND 9 8 NC 7 STAT1 6 STAT2 5 BAT Pin Description Pin Name Description 1 NC No Connector. 2 ISET Charge Current Program, Charge Current Monitor and Shutdown Pin. 3 VSS VSS is the connection to system ground. 4 VIN VIN is the input power source. Connect to a wall adapter. 5 BAT BAT is the connection to the battery. Typically a 10µF Tantalum capacitor is needed for stability when there is no battery attached. When a battery is attached, only a 0.1µF ceramic capacitor is required. Open-Drain Charge Status Output. When the battery is charging, the STAT pin could be pulled High by an 6 STAT2 external pull high resistor. When the charge cycle is completed, the pin is pulled Low by an internal N-channel MOSFET. Open-Drain Charge Status Output. When the battery is charging, the STAT pin is pulled low by an internal 7 STAT1 N-channel MOSFET. When the charge cycle is completed, the pin could be pulled High by an external pull high resistor. 8 NC 9 PGND LP28056-02 No Connector. Ground. Mar.-2017 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 2 of 8 Preliminary Datasheet LP28056 Function Block Diagram 4 145℃ TA TDIE VIN 1X 1200X - NC TTEMP BAT 5μA + MA 5 R1 1 TTEMP VA CA - + 45%VIN + - R2 SCHMITT 6 STAT2 SHDN C1 - REF 1.22V + R3 1V R4 7 STAT1 C2 C3 + 0.1V - R5 + - TO BAT 3μA VCC 2.9V 2 ISET VSS 3 Absolute Maximum Ratings Note 1  Input to GND(VIN) ---------------------------------------------------------------------------------------------- -0.3V to 8V  BAT to GND ----------------------------------------------------------------------------------------------------- -0.3V to 7V  Other Pin to GND ----------------------------------------------------------------------------------------------- -0.3V to 6V  BAT Short-circuit Duration ----------------------------------------------------------------------------------- Continuous  Maximum Junction Temperature ---------------------------------------------------------------------------------- 150℃  Storage Temperature ------------------------------------------------------------------------------------- -45℃ to 165℃  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 ( PD,TA=25℃) ----------------------------------------------------------------------- 2W  Thermal Resistance (θJA) ------------------------------------------------------------------------------------------ 50℃/W ESD Susceptibility  HBM(Human Body Mode) --------------------------------------------------------------------------------------------- 2KV  MM(Machine Mode) --------------------------------------------------------------------------------------------------- 200V LP28056-02 Mar.-2017 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 3 of 8 Preliminary Datasheet LP28056 Electrical Characteristics (TA=25℃. VIN=5V, unless otherwise noted.) Symbol Parameter VIN Adapter/USB Voltage Range ICC Input Supply Current Condition Min Typ Max Units 4.5 5 6.5 V Charge Mode, RISET=10k 300 2000 μA Standby Mode (Charge Terminated) 300 500 μA 50 μA Shutdown Mode (RISET NC) VFLOAT IBAT Regulated Output (Float) Voltage BAT Pin Current IBAT=40mA 4.158 4.2 4.242 V RISET=1k VTRIKL