LP4061B6F

Preliminary Datasheet LP4061 800mA Standalone Linear Li-Ion Battery Charger with Dual LED Display General Description Features The LP4061 is a complete constant-current constant- voltage  Programmable Charge Current Up to 800mA linear charger for single cell lithium-ion batteries. Its SOT 23-6 &  No MOSFET, Sense Resistor or Blocking Diode Required TDFN-8 package and low external component count make the  Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize  Charge Rate Without Risk of Overheating  Charges Single Cell Li-Ion Batteries Directly from USB Port  Charge Voltage with ±1% Accuracy ambient temperature. The charge voltage is fixed at 4.2V, and  Available in SOT23-6 & TDFN-8 2mmx2mm Package the charge current can be programmed externally with a single  Charge Current Monitor Output for Gas Gauging resistor. The LP4061 automatically terminates the charge cycle  Automatic Recharge  2.9V Trickle Charge Threshold  C/10 Charge Termination LP4061 ideally suited for portable applications. Furthermore, the LP4061 is specifically designed to work within USB power specifications. No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. Thermal feedback regulates the charge current to limit the die temperature during high power operation or high when the charge current drops to 1/10th the programmed value after the final float voltage is reached. 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. Typical Application Circuit VIN 4 Order Information LP4061 □ □ VCC BAT 3 10uF 10uF □ RED 1 F: Pb-Free GREEN Package Type 5 PROG 6 STAT1 STAT2 GND 2 2.7K BATTERY LP4061 B6: SOT23-6 QV:TDFN-8 Marking Information Device Applications  Portable Media Players/MP3 players  Cellular and Smart mobile phone  PDA/DSC  Bluetooth Applications LP4061-04 Dec.-2018 LP4061B6F LP4061QVF Marking LP4061 BCYWX LP4061 BCYWX Package Shipping SOT23-6 3K/REEL TDFN-8 4K/REEL Marking indication: Y:Production year W:Production week X:Production batch. Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 1 of 8 Preliminary Datasheet LP4061 Functional Pin Description Package Type Pin Configurations TOP VIEW SOT23-6 &TDFN-8 STAT1 1 6 PROG GND 2 5 STAT2 3 4 BAT 7 PROG STAT2 2 STAT1 3 BAT 8 VCC 1 GND 6 NC VCC SOT23-6 NC 4 5 GND Pin Description Pin SOT23-6 Name Description STAT1 Open-Drain Charge Status Output. When the battery is charging, the STAT pin is pulled low by an internal N-channel MOSFET. When the charge cycle is completed, the pin is pulled High. TDFN-8 3 1 2 5 GND Ground. BAT Charge Current Output. Provides charge current to the battery and regulates the final float voltage to 4.2V. An internal precision resistor divider from this pin sets the float voltage which is disconnected in shutdown mode. VCC Positive Input Supply Voltage. It provides power to the charger. VCC can range from 4.35V to 6.5V and should be bypassed with at least a 1µF capacitor. 8 3 4 1 2 5 6 7 4/6 LP4061-04 STAT2 Open-Drain Charge Status Output. When the battery is charging, the STAT pin is pulled High by an internal N-channel MOSFET. When the charge cycle is completed, the pin is pulled Low. PROG Charge Current Program, Charge Current Monitor and Shutdown Pin. The charge current is programmed by connecting a 1% resistor to ground(RPROG). NC Dec.-2018 No Connector. Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 2 of 8 Preliminary Datasheet LP4061 Function Block Diagram VCC TA 1200X 1X TDIE - TTEMP 5μA + BAT MA R1 TTEMP VA CA - + SCHMITT STAT1 SHDN C1 + - + R3 1V REF 1.22V R4 C2 STAT2 C3 + 0.1V - R5 + - TO BAT R2 3μA VCC 2.9V PROG GND Absolute Maximum Ratings Note 1  Input to GND(VCC) ------------------------------------------------------------------------------------------------------------------ -0.3V to 8V  BAT to GND ---------------------------------------------------------------------------------------------------------------------------- -0.3V to 8V  Other Pin to GND --------------------------------------------------------------------------------------------------------------------- -0.3V to 6V  BAT Short-circuit Duration --------------------------------------------------------------------------------------------------------- Continuous  Operation Temperature Range ---------------------------------------------------------------------------------------------- --40℃ to 85℃  Junction Temperature ---------------------------------------------------------------------------------------------------------------------- 150℃  Storage Temperature ----------------------------------------------------------------------------------------------------------- -65℃ to 165℃  Lead Temp (Soldering,10sec) ------------------------------------------------------------------------------------------------------------ 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  Thermal Resistance (SOT23-5, θ JA ) ----------------------------------------------------------------------------------------------- 250℃/W  Thermal Resistance (TDFN, θ JA ) ----------------------------------------------------------------------------------------------------- 76℃/W ESD Susceptibility  HBM(Human Body Mode) ------------------------------------------------------------------------------------------------------------------- 2KV  MM(Machine Mode) -------------------------------------------------------------------------------------------------------------------------- 200V LP4061-04 Dec.-2018 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 3 of 8 Preliminary Datasheet LP4061 Electrical Characteristics (VCC=5V, TA =25°C , unless otherwise noted) Symbol Parameter VCC Input Supply Voltage ICC Condition Input Supply Current Min 4.35 IBAT Regulated Output (Float) Voltage BAT Pin Current Units 6.5 V 350 2000 μA Standby Mode (Charge Terminated) 200 500 μA 25 50 μA 4.2 4.242 V RPROG=10k, Current Mode 100 120 mA RPROG=2k, Current Mode 500 600 mA Standby Mode, VBAT=4.2V -2.5 -6 μA Shutdown Mode (RPROG NC) ± 1 ± 2 μA Sleep Mode, VCC=0V ± 1 ± 2 μA 50 Shutdown Mode 0℃≤TA≤85℃, IBAT=40mA ITRIKL Trickle Charge Current VBAT