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電池管理 IC
電池充電器 IC

LP3947

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USB/AC 轉接器，單芯鋰離子電池充電器 IC

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產品規格表

LP3947

最後一次購買
產品規格表 立即訂購

產品詳細資料

Number of series cells 1 Charge current (max) (A) 0.75 Vin (max) (V) 6 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 6.5 Control topology Linear Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 4.3 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 0.75 Vin (max) (V) 6 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 6.5 Control topology Linear Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 4.3 Rating Catalog Operating temperature range (°C) -40 to 85
WSON (NHL) 14 16 mm² 4 x 4
  • Supports USB Charging Scheme
  • Integrated Pass Transistor
  • Near-Depleted Battery Preconditioning
  • Monitors Battery Temperature
  • Built-In 5.6 Hour Timer
  • Under Voltage and Over Voltage Lockout
  • Charge Status Indicators
  • Charge Current Monitor Analog Output
  • LDO Mode Operation can source 1 Amp
  • Continuous Over Current/Temperature Protection

Key Specifications

  • 1% Charger Voltage Accuracy Over
    0°C ≤ TJ ≤ 85°C
  • 4.3V to 6V Input Voltage Range
  • 100 mA to 750 mA Charge Current Range, in Charger Mode
  • 100 mA to 500 mA Charge Current Range, in USB Mode
  • WSON Package Power Dissipation:
    2.7W at TA = 25°C

All trademarks are the property of their respective owners.

  • Supports USB Charging Scheme
  • Integrated Pass Transistor
  • Near-Depleted Battery Preconditioning
  • Monitors Battery Temperature
  • Built-In 5.6 Hour Timer
  • Under Voltage and Over Voltage Lockout
  • Charge Status Indicators
  • Charge Current Monitor Analog Output
  • LDO Mode Operation can source 1 Amp
  • Continuous Over Current/Temperature Protection

Key Specifications

  • 1% Charger Voltage Accuracy Over
    0°C ≤ TJ ≤ 85°C
  • 4.3V to 6V Input Voltage Range
  • 100 mA to 750 mA Charge Current Range, in Charger Mode
  • 100 mA to 500 mA Charge Current Range, in USB Mode
  • WSON Package Power Dissipation:
    2.7W at TA = 25°C

All trademarks are the property of their respective owners.

The LP3947 is a complete charge management system that safely charges and maintains a Li-Ion battery from either USB power source or AC adaptor. In USB mode, the LP3947 supports charging in low power or high power mode. Alternatively, the LP3947 can take charge from AC adaptor. In both USB and AC adaptor modes, charge current, battery regulation voltage, and End of Charge (EOC) point can be selected via I2C interface. The LP3947 can also operate on default values that are pre-programmed in the factory. The battery temperature is monitored continuously at the Ts pin to safeguard against hazardous charging conditions. The charger also has under-voltage and over-voltage protection as well as an internal 5.6 hr timer to protect the battery. The pass transistor and charge current sensing resistor are all integrated inside the LP3947.

The LP3947 operates in four modes: pre-qualification, constant current, constant voltage and maintenance modes. There are two open drain outputs for status indication. An internal amplifier readily converts the charge current into a voltage. Also, the charger can operate in an LDO mode providing a maximum of 1.2 Amp to the load.

The LP3947 is a complete charge management system that safely charges and maintains a Li-Ion battery from either USB power source or AC adaptor. In USB mode, the LP3947 supports charging in low power or high power mode. Alternatively, the LP3947 can take charge from AC adaptor. In both USB and AC adaptor modes, charge current, battery regulation voltage, and End of Charge (EOC) point can be selected via I2C interface. The LP3947 can also operate on default values that are pre-programmed in the factory. The battery temperature is monitored continuously at the Ts pin to safeguard against hazardous charging conditions. The charger also has under-voltage and over-voltage protection as well as an internal 5.6 hr timer to protect the battery. The pass transistor and charge current sensing resistor are all integrated inside the LP3947.

The LP3947 operates in four modes: pre-qualification, constant current, constant voltage and maintenance modes. There are two open drain outputs for status indication. An internal amplifier readily converts the charge current into a voltage. Also, the charger can operate in an LDO mode providing a maximum of 1.2 Amp to the load.
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類型 標題 日期
* Data sheet LP3947 USB/AC Adaptor, Single Cell Li-Ion Battery Charger IC datasheet (Rev. B) 2013年 4月 2日

訂購與品質

內含資訊：
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點