Produktbeskrivning
SOT23 Dual-Input USB/AC Adapter 1-Cell Li+ Battery Charger
The MAX1555 charges a single-cell lithium-ion (Li+) battery from both USB and AC adapter sources. It operates with no external FETs or diodes, and accepts operating input voltages up to 7V.
With USB connected, but without DC power, charge current is set to 100mA (max). This allows charging from both powered and unpowered USB hubs with no port communication required. When DC power is connected, charging current is set at 280mA (typ). No input-blocking diodes are required to prevent battery drain.
Features
* Charge from USB or AC Adapter
* Automatic Switchover when AC Adapter is Plugged In
* On-Chip Thermal Limiting Simplifies Board Design
* Charge Status Indicator
* 5-Pin Thin SOT23 Package
* Protected by U.S. Patent #6,507,172
Applications
* PDAs
* Wireless Appliances
* Cell Phones
* Digital Cameras
The MAX1555 charges a single-cell lithium-ion (Li+) battery from both USB and AC adapter sources. It operates with no external FETs or diodes, and accepts operating input voltages up to 7V.
With USB connected, but without DC power, charge current is set to 100mA (max). This allows charging from both powered and unpowered USB hubs with no port communication required. When DC power is connected, charging current is set at 280mA (typ). No input-blocking diodes are required to prevent battery drain.
Features
* Charge from USB or AC Adapter
* Automatic Switchover when AC Adapter is Plugged In
* On-Chip Thermal Limiting Simplifies Board Design
* Charge Status Indicator
* 5-Pin Thin SOT23 Package
* Protected by U.S. Patent #6,507,172
Applications
* PDAs
* Wireless Appliances
* Cell Phones
* Digital Cameras