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LM3420

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锂离子电池充电控制器

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数据表

LM3420

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数据表 立即订购

产品详情

Number of series cells 1, 2, 3, 4 Charge current (max) (A) 0.015 Vin (max) (V) 20 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) 20 Control topology Linear Control interface Standalone (RC-Settable) Features IC thermal regulation Vin (min) (V) 13 Rating Catalog Operating temperature range (°C) -40 to 125
Number of series cells 1, 2, 3, 4 Charge current (max) (A) 0.015 Vin (max) (V) 20 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) 20 Control topology Linear Control interface Standalone (RC-Settable) Features IC thermal regulation Vin (min) (V) 13 Rating Catalog Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • Input Voltage Range: up to 20 V
  • Voltage Options for Charging 1, 2, 3, or 4 Cells
  • Output Current up to 15 mA
  • Precision (0.5%) End-of-Charge Control
    • LM3420 ±1%
    • LM3420A ±0.5%
  • Drive Capability for External Power Stage
  • Temperature Drift Curvature Correction for
    Voltage Stability
  • Low Quiescent Current, 85 µA (Typ.)
  • Tiny SOT-23-5 package
  • Input Voltage Range: up to 20 V
  • Voltage Options for Charging 1, 2, 3, or 4 Cells
  • Output Current up to 15 mA
  • Precision (0.5%) End-of-Charge Control
    • LM3420 ±1%
    • LM3420A ±0.5%
  • Drive Capability for External Power Stage
  • Temperature Drift Curvature Correction for
    Voltage Stability
  • Low Quiescent Current, 85 µA (Typ.)
  • Tiny SOT-23-5 package

The LM3420 series of controllers are monolithic integrated circuits designed for charging and end-of-charge control for lithium-ion rechargeable batteries. The LM3420 is available in an 8.4-V version for one through four cell charger applications.

Included in a very small package is an (internally compensated) op amp, a bandgap reference, an NPN output transistor, and voltage setting resistors. The amplifier’s inverting input is externally accessible for loop frequency compensation. The output is an open-emitter NPN transistor capable of driving up to 15 mA of output current into external circuitry.

A trimmed precision bandgap reference utilizes temperature drift curvature correction for excellent voltage stability over the operating temperature range. The LM3420 series allows for precision end-of-charge voltage threshold for lithium-ion rechargeable batteries. The premium grade LM3420A is available with an initial voltage threshold tolerance of ±0.5%, while the standard grade LM3420 has an initial voltage threshold tolerance of ±1%.

The LM3420 is available in a sub-miniature 5-lead surface mount package thus allowing very compact designs.

The LM3420 series of controllers are monolithic integrated circuits designed for charging and end-of-charge control for lithium-ion rechargeable batteries. The LM3420 is available in an 8.4-V version for one through four cell charger applications.

Included in a very small package is an (internally compensated) op amp, a bandgap reference, an NPN output transistor, and voltage setting resistors. The amplifier’s inverting input is externally accessible for loop frequency compensation. The output is an open-emitter NPN transistor capable of driving up to 15 mA of output current into external circuitry.

A trimmed precision bandgap reference utilizes temperature drift curvature correction for excellent voltage stability over the operating temperature range. The LM3420 series allows for precision end-of-charge voltage threshold for lithium-ion rechargeable batteries. The premium grade LM3420A is available with an initial voltage threshold tolerance of ±0.5%, while the standard grade LM3420 has an initial voltage threshold tolerance of ±1%.

The LM3420 is available in a sub-miniature 5-lead surface mount package thus allowing very compact designs.
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类型 标题 下载最新的英语版本 日期
* 数据表 LM3420 8.4-V Li-Ion Battery Charge Controller 数据表 (Rev. E) PDF | HTML 2014年 12月 15日
EVM 用户指南 AN-1967 LM3424 Buck-Boost Evaluation Board (Rev. A) 2013年 5月 3日
EVM 用户指南 AN-1969 LM3424 Boost Evaluation Board (Rev. A) 2013年 5月 3日
EVM 用户指南 AN-1985 LM3429 Buck-Boost Evaluation Board (Rev. C) 2013年 5月 3日
EVM 用户指南 AN-1986 LM3429 Boost Evaluation Board (Rev. B) 2013年 5月 3日
EVM 用户指南 AN-1872 LM3423 Boost Evaluation Board (Rev. B) 2013年 5月 1日
EVM 用户指南 AN-1907 LM3423 Buck-Boost Configuration Evaluation Board (Rev. A) 2013年 5月 1日
应用手册 Battery Charging 2007年 3月 21日

设计和开发

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SOT-23 (DBV) 5 查看选项
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订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

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