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USB Detection with Smart Power Selector Li+ Chargers

Single-Chip Solution for USB Charging and Charger Detection

产品详情

主要特征

应用/用途

Parametric specs for USB Charger Detectors
Protocol USB
Configuration 2 x SPST
VSUPPLY (Single) (V) (min) 2.2
VSUPPLY (Single) (V) (max) 5.5
VSIGNAL (V) (min) 0
Supported USB Battery Charging Specification 1.2
VBUS Tolerance (V) 28
ESD Protection ±15kV HBM
RON (Ω) (max) 6
RFLAT(ON) (Ω) (typ) 0.3
IL(OFF) (nA) (max) 360
CON (pF) 6
COFF (pF) 3.5
Package/Pins WLP/25
Budgetary
Price (See Notes)
1.64
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参量

Parametric specs for USB Charger Detectors
Protocol USB
Configuration 2 x SPST
VSUPPLY (Single) (V) (min) 2.2
VSUPPLY (Single) (V) (max) 5.5
VSIGNAL (V) (min) 0
Supported USB Battery Charging Specification 1.2
VBUS Tolerance (V) 28
ESD Protection ±15kV HBM
RON (Ω) (max) 6
RFLAT(ON) (Ω) (typ) 0.3
IL(OFF) (nA) (max) 360
CON (pF) 6
COFF (pF) 3.5
Package/Pins WLP/25
Budgetary
Price (See Notes)
1.64

主要特征

  • 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

应用/用途

  • Portable Consumer Devices
  • Portable Digital Cameras
  • Portable Digital Video Cameras
  • Portable Industrial Devices

描述

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.

简化框图

MAX14746, MAX14747: Functional Diagram MAX14746, MAX14747: Functional Diagram Zoom icon

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