ISL6297 is a dual -mode lithium ion battery charger optimization for mobile phone travel chargers. It uses Intersil to apply for a patented dual -mode charging to minimize the technical linear charger generated by the normal heat. ISL6297 can be placed in the stroke connector through the maximization of the calories. ISL6297 is an enhancement to the original ISL6292B. New functions include improving accuracy, pre -charging circuit verification, and enhancing LED indicator lights. When using a current -limited AC/DC converter, the dual -mode charger is configured to be configured to be a traditional linear charger with the same current as the lithium ion battery. The constant charge current determines the converter of the current limit of AC/DC. The constant output voltage is fixed at a battery with a low battery voltage of 4.2V battery below 2.8V, and a battery with a low charging current of the charger. The charged state is indicated by the two -color LED. Safety timer prevents the powerless battery for too long. ISL6297 is also equipped with thermaguard # 8482 ;, a hot -automatic reduction of the internal mold temperature of the folding function of the charging function exceeds 100 ° C to prevent further temperature. This function eliminates applications with limited target space. The environmental temperature monitoring circuit allows users to set up two independent charging and non -charging temperature limit levels. The heat enhancement QFN packaging improves the thermal performance of ISL6297 in the application of limited space.

Features

The complete charger of a single battery lithium ion battery

Integrated power electrical components and current sensors

No external blocking diode

] Ultra -low thermal dual -mode operation

0.7%voltage accuracy, remote sensing

Pre -charging circuit verification with LED state indication

Drive dual -color LED

Programmable safety timer

The programmable current limit is as high as 1.5A

The end current of the programmable charging

Thermaguard hotel #8482; the charging current folded

] NTC thermistor interface for battery temperature monitor

Two-level ambient temperature settings

After starting, it is guaranteed to run under 2.65V

Environmental temperature range: -20 ° C to 70 ° C

Thermal enhancement QFN packaging

QFN package: -Stojin JEDEC PUB95 MO-220QFN-four-level plane without lead-packaging shape-closer to chip size packaging, improved printing Circuit board efficiency, thinner shape

Provides lead -free and annealing (in line with ROHS)

Application

Palm computer, mobile phone and smartphone

Portable musical instrument, MP3 player

Medical handheld equipment

Self -charging battery pack

Absolutely absolutely Maximum rated heat information

Power voltage (vehicle identification number). -0.3 to 7 volts

All other pins. -0.3 to 5.5V

Recommended operating conditions

Environmental temperature range. -20 ° C to 70 ° C

Power voltage, vehicle recognition number. 4.3 Volume to 6.5 volts

The maximum pin voltage (except vehicle identification number). 5.25 il

Thermal resistance (Note 1, 2) θJa (degrees Celsius/tile) θjc (degrees Celsius/tile) 4x4 QFN packaging. 41 4

Concluding temperature range. -55 ° C to+150 ° C

The operating temperature range. -40 ° C to+85 ° C

Storage temperature range. -65 ° C to+150 ° C

The highest lead temperature (welding 10s). +

300

Celsius

Note: The stress listed in the absolute maximum rated value " may cause permanent damage to the device. This is a stress level and operation

The above conditions described in the operating chapter of this specification or the device under any other conditions are not hidden.

Note:

1. θja is measured in free air