The MAX8677A is an integrated 1-cell Li+ charger and Smart Power Selector™ with dual (DC and USB) power inputs. It can operate with either separate inputs for USB and AC adapter power*, or from a single input that accepts both. All power switches for charging and switching the load between battery and external power are included on-chip. No external MOSFETs are required.
The MAX8677A features a Smart Power Selector to make the best use of limited USB or adapter power. The battery charge current and input current limit are independently set up to 1.5A and 2A, respectively. Input power not used by the system charges the battery. USB input current can be set to 100mA or 500mA. Automatic input selection switches the system load from battery to external power.
Other features include overvoltage protection (OVP), charge status and fault outputs, power-OK monitors, charge timer, and battery thermistor monitor. Additionally, on-chip thermal limiting reduces the battery charge rate to prevent overheating. The MAX8677A is available in a 4mm x 4mm, 24-pin TQFN-EP package.
Key Features
Applications/Uses
Complete Charger and Smart Power Selector
No External MOSFETs Required
Common or Separate USB and Adapter Inputs
System Operates with Discharged or No Battery
Automatic Adapter/USB/Battery Switchover
Load Peaks Over Adapter Rating Are Supported by Battery
Input Overvoltage Protection to 16V
40mΩ System-to-Battery Switch
Thermal Regulation Prevents Overheating
Active-Low CHG, Active-Low DOK, Active-Low UOK, and Active-Low FLT Indicators
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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