USB Detection with Smart Power Selector Li+ Chargers

Single-Chip Solution for USB Charging and Charger Detection



The MAX14746/MAX14747 are a series of USB charger detectors with an integrated Smart Power Selector™ linear charger solutions that provide a single-chip solution for charging and charger detection.

The MAX14746/MAX14747 charger detectors are compliant to USB Battery Charger Detection Rev 1.2* and capable of detecting multiple USB battery-charging methods, including Standard Downstream Ports (SDP), Charging Downstream Ports (CDP), and Dedicated Charger Ports (DCP). The devices also detect common proprietary charge adapters, including those from Apple.

The MAX14746/MAX14747 battery chargers feature Smart Power Selector operation, allowing operation with dead or no battery present. The devices limits USB VBUS current based on the detect charger source type. If the charger power source is unable to supply the entire system load, the smart-power control circuit supplements the system load with current from the battery.

The devices protect against overvoltage faults up to 28V.

This series of USB charger detectors are available with several options, with slight variations in, for example, power-up states. These variations are noted throughout this data sheet.

There are five options available with slight variations in, for example, power-up states. The devices are available in a 25-ball, 0.4mm pitch wafer-level package (WLP), and are specified over the -40°C to +85°C extended temperature range.

MAX14746, MAX14747: Functional Diagram MAX14746, MAX14747: Functional Diagram 放大+


  • Flexible System Design to Operate with Any USB Charger Source
    • Compliant to USB Battery Charger Rev 1.2 Specification
    • Supports Proprietary USB Charging Sources, Including Apple
    • D+/D- Bias Voltage Supported
  • Easy to Implement Li+ Battery Charging
    • Smart Power Selector
    • Fully Compliant with Dead Battery/Weak Battery Charging According to USB 2.0 Specification
    • JEITA Charge Protection
    • Thermal Protection
    • Internal USB D+/D- Switch to Manage Connection
  • Integrates High Level of Protection
    • 28V Tolerant Input on VB
    • ±15kV Human Body Model ESD Protection on CDP and CDN


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请查看具体的参数规格 USB Charger Detectors (13)

Part Number

Pricing Notes:

MAX14746EVKIT: Evaluation Kit for the MAX14746/MAX14747
申请可靠性报告: MAX14747 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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