AAT3698中文资料Single Input, 1.6A Linear Charger with 28V Input Protection and 50mA LDO数据手册Skyworks规格书

描述 Description

The AAT3698-1/-2 BatteryManager™ is a single-cell Li-Ion/Li-Polymer battery charger IC designed to operate from a USB port or AC adapter with an input voltage of up to 7.0V. For increased safety, the AAT3698-1/-2 also includes over-voltage input protection (OVP) up to 28V.The AAT3698-1/-2 precisely regulates battery voltage for 4.2V Li-Ion/Polymer battery cells through a low RDS(ON) switch. The charging current can be set by an external resistor up to 1.6A. If an over-voltage condition occurs from the input, the series switch quickly opens and a fault flag is activated, preventing damage to the battery and the charging circuitry. Other fault conditions are monitored in real time. In case of a battery over-voltage, or over-temperature failure, the device will automatically shut down, thus protecting the charging device and battery under charge. A status monitoring output pin (STAT) is provided to indicate charging activity. This open drain output pin can be used to drive an external LED as a charging indicator. The AAT3698-1/-2 also includes a 5.0V LDO linear regulator with over-voltage protection that can supply loads of up to 50mA. The AAT3698-1/-2 is available in the Pb-free, thermally enhanced, space-saving 3x3mm TDFN33-14 package and is rated over the -40°C to +85°C temperature range.

特性 Features

·3.0V ~ 7.0V Input Voltage Range
·14-pin 3x3mm TDFN Package
·High Level of Integration with Internal:
·Power Device
·Reverse Current Blocking
·Current Sensing
·5V/50mA LDO Output
·Programmable Fast Charge Current from 50mA to 1.6A
·Programmable Charge Termination Current
·0.5% final voltage accuracy
·Fast Over-Voltage Protection Turn Off
·OVP Trip Threshold: 7.25V (typ)
·Digitally Controlled Thermal Loop Regulation
·Emergency Thermal Shutdown Protection
·Charge Status Indicator
·Power OK Indicator
·Battery Absence Detection Input Pin
·Automatic Termination and Recharge Sequencing (AAT3698-1 Only)
·Automatic Trickle Charge for Battery Pre-Conditioning
·Active Low Enable with Internal 200kΩ Pull-Down Resistor
·Output for Auto-Booting