MAX77301EVKIT Datasheet, PDF (1/15 Pages) Maxim Integrated Products – Enables Charging from a Micro-B USB Connector

MAX77301 Evaluation Kit
Evaluates: MAX77301
General Description
The MAX77301 evaluation kit (EV kit) is a fully assembled
and tested PCB for evaluating the MAX77301 dual-path
lithium-ion (Li+) battery charger with USB enumeration
and automatic adapter-type detection features. The EV
kit is powered from a USB port or dedicated charger with
automatic detection of adapter type and USB enumera-
tion capability.
The IC features a Smart Power Selector™ feature that
makes the best use of limited USB or adapter power.
Battery charge current is set independent of the input-
current limit. Power not used by the system charges the
battery. This allows the appli­cation to operate without a
battery, discharged battery, or dead battery. Automatic
input selection switches the system between battery,
battery assist, and external power modes.
The EV kit provides LED indicators for adapter-type
detection (UOK), external power-on (EXT_PWRON),
charging status (CHG_STAT), external power-source
current capability (CHG_TYPE), and interrupts (IRQ).
The EV kit also features an NTC thermistor for thermal
protection and JEITA-compliant* charging.
The EV kit is configured for full-speed USB by default,
but can be configured for low-speed USB by removing
the crystal oscillator and adjusting jumper default settings
(see Table 1).
Benefits and Features
●● Enables Charging from a Micro-B USB Connector
●● USB Enumeration without Host-Processor
Intervention
●● Automatic Detection of Adapter Type or USB Port
●● Dual-Speed USB Operation (Full Speed or
Low Speed)
●● Input Overvoltage Protection to 16V
●● Smart Power Selector
• Automatic Current Sharing Between Battery
Charging and System
• Operates with Discharged or No Battery
●● LED Indicators
●● NTC Monitoring of Battery Temperature
●● JEITA-Compliant Charging Profile
●● Thermal-Charge Regulation Prevents the IC from
Overheating
Ordering Information appears at end of data sheet.
Smart Power Selector is a trademark of Maxim Integrated
Products, Inc.
*U.S. Patent # 6,507,172.
19-8646; Rev 0; 2/17