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ISL9230
High Power Li-Ion Charger W/I-Path Management

热度 226

The ISL9230 is a fully integrated high input voltage single-cell Li-ion battery charger with power path management function. This charger performs the CC/CV charge function required by Li-ion batteries. The charger can withstand an input voltage up to 26V but is disabled when the input voltage exceeds 6.6V OVP threshold. The input current limit and charge current are programmable with external resistors. When the battery voltage is lower than 3.0V, the charger preconditions the battery with 10% of the programmed charge current. When the charge current reduces to the end-of-charge (EOC) current level during the CV charge phase, the EOC indicator (CHG) will toggle to a logic high to indicate the end-of-charge condition.

The ISL9230 uses separate power paths to supply the system load and the battery. This feature allows the system to immediately operate with a completely discharged battery. This feature also allows the charge to terminate when the battery is full while continuing to supply the system power from the input source, thus minimizing unnecessary charge/discharge cycles and prolonging the battery life.

Two indication pins (PG and CHG) allow simple interface to a microprocessor or LEDs.

  • Complete Charger for Single-Cell Li-ion/Polymer Batteries
  • Current Path Management Optimize for Charge and System Currents
  • Intelligent Timeout Interval Based on Actual Charge Current
  • 1% Charger Output Voltage Accuracy
  • Programmable Input Current Limit
  • Programmable Charge Current
  • NTC Thermistor Input
  • Complies with USB Charger
  • Charge Current Thermal Foldback for Thermal Protection
  • Trickle Charge for Fully Discharged Batteries
  • 26V Maximum Voltage at VIN Pin
  • Power Presence and Charge Indications
  • Ambient Temperature Range: -40°C to +85°C
  • 16 Ld 3x3 TQFN Package
  • Pb-Free (RoHS Compliant)
    • Mobile Phones
    • Blue-Tooth Devices
    • PDAs
    • MP3 Players
    • Stand-Alone Chargers
    • Other Handheld Devices
 
Alternatives
Parameters ISL9230 ISL9220 ISL9220A ISL9301
VOUT (typ) (V)4.2 4.2 4.2 4.5
Voltage Accuracy (%)1 0.5 0.5 1
VIN1 (max)26 V 18 V 18 V 28 V
VIN2 (max)N/A N/A N/A N/A
IOUT1 (max) (A)1.5 2 2 0.8
IOUT2 (max) (A)N/A N/A N/A N/A
Safety TimerYes Yes Yes Yes
Self TerminationYes Yes Yes Yes
Accepts CC AdapterNo No No Yes
VIN1 Trickle Charge (min) (% CC)10 10 10 6
VIN2 Trickle Charge (min) (% CC)N/A N/A N/A N/A
Thermal RegulationYes Yes Yes Yes
Function(s)Power Good & Charge Status Enable, Charge Status, Fault Enable, Charge Status, Fault Power Presence, Charge Indication, Battery Disconnect, IREF, IMIN Set, Time Set
Battery ChemistrySingle Cell Li+/Polymer Single Cell Li+/Polymer Single Cell Li+/Polymer Single Cell Li+/Polymer
Qualification LevelStandard Standard Standard Standard

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