PJ4054C

PJ4054C Linear Lithium-ion Battery Charger Description The PJ4054C is a complete constant-current/constant-voltage linear charger for single cell lithium-ion batteries. Its SOT package and low external component count make the PJ4054C ideally suited for portable applications. Furthermore, the PJ4054C 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 ambient temperature. The charge voltage is fixed at 4.25V, and the charge current can be programmed externally with a single resistor. The PJ4054C automatically terminates the charge cycle when the charge current drops to 1/10th the programmed value after the final float voltage is reached.When the input supply (wall adapter or USB supply) is removed, the PJ4054C automatically enters a low current state, dropping the battery drain current to less than 1µA. The PJ4054C can be put into shutdown mode, reducing the supply current to 25µA. Other features include charge current monitor, undervoltage lockout, automatic recharge and a status pin to indicate charge termination and the presence of an input voltage. Features ⚫ Programmable Charge Current Up to 500mA ⚫ No External MOSFET, Sense Resistor or Blocking Diode Required ⚫ Charges Single Cell Li- Ion Batteries Directly from USB Port ⚫ Preset 4.25V Charge Voltage with ±1% Accuracy ⚫ Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheating ⚫ Charge Status Output Pin ⚫ 25μA Shutdown Current ⚫ 2.9V Trickle Charge Threshold ⚫ C/10 ChargeTermination ⚫ Soft-Start Limits Inrush Current ⚫ Automatic Recharge ⚫ Battery Reverse Polarity Voltage Protection ⚫ Charge Current Monitor Output for Gas Gauging ⚫ Small Package SOT-23-5 Package for Single Cell Lithium- Ion Batteries Application ⚫ Cellular Telephones ⚫ Charging Docks and Cradles ⚫ Bluetooth Application ⚫ Wearable Application www.pingjingsemi.com Revision：2.0 Apr-2022 1/9 PJ4054C Linear Lithium-ion Battery Charger Pin Distribution SOT-23-5 4.VCC 5.PROG 1.CHRG 2.GND 3.BAT Pin Function Pin No. Symbol 1 CHRG 2 GND Ground Pin. 3 BAT Charging Current Output. 4 VCC Positive Input Vower Voltage. 5 PROG www.pingjingsemi.com Revision：2.0 Apr-2022 Pin Function Open-Drain Charge Status Output. Charge Current Program, Charge Current Monitor and Shutdown Pin. 2/9 PJ4054C Linear Lithium-ion Battery Charger Block Diagram www.pingjingsemi.com Revision：2.0 Apr-2022 3/9 PJ4054C Linear Lithium-ion Battery Charger Absolute Maximum Ratings Note1,2 Ratings at 25℃ ambient temperature unless otherwise specified. Parameter Symbol Ratings Unit VCC -0.3~9 V VPROG -0.3~VCC+0.3 V CHG,BAT Pin Voltage VBAT -0.3~7 V BAT Pin Current IBAT 500 mA Power Dissipation PD Internally Limited Operating Junction Temperature Range Tj -40~+150 °C Storage Temperature Tstg -65~+125 °C Lead Temperature (Soldering, 10sec.) TL 260 °C Symbol Ratings Unit VESD(HBM) ±2000 V VESD(CDM) ±200 V ILATCH(UP) ±400 mA Symbol Ratings Unit Topr -40~+85 °C Tj -40~+125 °C VCC Input Voltage Prog Pin Voltage Note: 1. Exceeding these ratings may damage the device. 2. The device is not guaranteed to function outside of its operating conditions. ESD Ratings Parameter Human Body Model (HBM) ANSI/ESDA/JEDEC JS-001-2014 Classification, Class: 2 Charged Device Model (CDM) ANSI/ESDA/JEDEC JS-002-2014 Classification, Class: C0b JEDEC STANDARD NO.78E APRIL 2016 Temperature Classification, Class: I Recommended Operating Conditions Parameter Operating Temperature Range Note1 Operating Junction Temperature Range Note: 1. All limits specified at room temperature (TA = 25°C) unless otherwise specified. All room temperature limits are 100% production tested. All limits at temperature extremes are ensured through correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). Thermal Information Parameter Junction-to-Ambient Thermal Resistance Note1,2 Junction-to-Case (top) Thermal Resistance Symbol Ratings Unit RθJA 180 °C/W RθJC 130 °C/W Note: 1. The package thermal impedance is calculated in accordance to JESD 51-7. 2. Thermal Resistances were simulated on a 4-layer, JEDEC board. www.pingjingsemi.com Revision：2.0 Apr-2022 4/9 PJ4054C Linear Lithium-ion Battery Charger Electrical Characteristics Note1,2,3 (VCC=5V, TA=25℃ , unless otherwise noted.) Parameter Input Supply Voltage Symbol Test Conditions VCC Charge Mode Note4,RPROG=12k Standby Mode(Charge Input Supply Current ICC Terminated) Min. Typ. Max. Unit 4.0 5.00 6.50 V -- 240 500 -- 50 100 µA Shutdown Mode: RPROG Not Connected, VCC