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ルネサス エレクトロニクス株式会社 (Renesas Electronics Corporation) - 6月はプライド月間として、LGBTQ+の権利や文化、コミュニティについて啓発する世界的な活動月間です

特長

  • Complete charger for single-cell Li-ion/polymer batteries
  • Integrated pass element and current sensor
  • No external blocking diode required
  • Low component count and cost
  • 25mV voltage accuracy over-temperature and input voltage range
  • 15mV voltage accuracy at room temperature
  • Programmable charge current
  • Programmable end-of-charge current (ISL9205)
  • Charge current thermal foldback for thermal protection (Thermaguard)
  • Trickle charge for fully discharged batteries
  • Power presence and charge indications
  • NTC interface (not available in some package options)
  • Less than 3μA leakage current off the battery when no input power attached or charger disabled
  • Ambient temperature range: -40°C to +85°C
  • DFN, QFN packages
  • Pb-free (RoHS compliant)

説明

The ISL9205, ISL9205A, ISL9205B, ISL9205C, and ISL9205D are integrated single-cell Li-ion or Li-polymer chargers capable of operating at an input voltage as low as 2. 5V. The low operating voltage allows the charger to work with a variety of AC adapters.

The ISL9205 family operates as a linear charger when the AC adapter is a voltage source. The battery is charged in a standard Li-ion charge profile, that is, a Constant Current phase followed by a Constant Voltage phase (CC/CV). The charge current during the Constant Current phase is determined by the external resistor connected to the IREF pin. When the adapter output is a current-limited voltage source and the current limit is smaller than the programmed constant current of the IC, the ISL9205 operates as a pulse charger where the charge current is determined by the current limit of the AC adapter during the Constant Current phase. The ISL9205 operates in a linear mode during the constant voltage phase in both adapter cases.

The ISL9205 family incorporates Thermaguard, which protects the IC against over-temperature. If the die temperature rises above a typical value of +100°C, the thermal foldback function reduces the charge current to prevent further temperature rise. The ISL9205 includes an external temperature monitoring function (not available in some package options). A Negative Temperature Coefficient (NTC) thermistor is connected between the TEMP pin and GND to monitor the battery or ambient temperature. The ISL9205 also includes a timer to set the time reference for various charge time limits. The timer is programmable with an external capacitor. Two logic inputs and two open-drain logic outputs are available for controlling the charger and indicating the charger status. The EN pin enables the charger. The TOEN pin (available in the ISL9205) enables the timeout function so that the charge is terminated when the preset time limits have been reached. The FAULT pin is an open-drain output that turns on when a fault condition is encountered. The STATUS pin is also an open-drain output that turns on when the charger is delivering current.

パラメータ

属性
Topology [Rail 1]Linear
Input Voltage (Min) (V)4.25
Input Voltage (Max) (V)6.5
Input Current Limit Accuracy (% (±))5
Battery Charge Voltage4.2
Charging Voltage Accuracy (Max) (±%)0.6
Charge Current Limit Accuracy5
Trickle Charge Current Range5mA to 90mA

パッケージオプション

Pkg. TypePkg. Dimensions (mm)Lead Count (#)Pitch (mm)
DFN3.0 x 3.0 x 0.90100.5

アプリケーション・ブロック図

Automatic Wine Cork Opener Block Diagram
自動ワインボトルオープナー
この自動ワインボトルオープナーは、外部部品なしでギアモーターを制御できるGreenPAKデバイスを備えています。

その他アプリケーション

  • Mobile Phones
  • Blue-Tooth Devices
  • PDAs
  • MP3 Players
  • Stand-Alone Cradle or Travel Chargers
  • Other Handheld Devices

このデバイスに組み合わせたい製品

更に設計開発を進めるための製品を探してみましょう

Part NumberStatusSamplesStockRoHSPackageBudgetary Price (USD)Lead Count (#)Carrier TypeMoisture Sensitivity Level (MSL)Pb (Lead) FreePb Free CategoryTemp. Range (°C)Country of AssemblyCountry of Wafer Fabrication
ISL9205AIRZActiveN/AIn StockRoHS:EN
DFN1ku | $0.8410#Tube2YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +85°CMALAYSIAUSA
ISL9205AIRZ-TObsoleteN/AOut of StockRoHS:EN
DFN10#Reel2YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +85°C

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Renesas Boards & Kits

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