AUR9801D中文资料LI-ION/LI POLYMER BATTERY CHARGER数据手册Diodes规格书

描述 Description

The AUR9801D is a highly-integrated battery charger for single-cell Li-ion or Li-polymer batteries capable of operating with an input voltage reached 2.5V. It is a complete charger device designed to work with an USB port or 5V output AC adapter.
The AUR9801D operates with CC (constant current) mode and CV (constant voltage) mode profiles. A low-current preconditioning charge mode is also provided as a trickle charging operation. The charge current is programmable up to 1A with an external resistor or a logic input. The charge voltage is 0.6% accurate over the full application range.
When operating with a current-limited adapter, the charger minimizes the thermal dissipation with pulsed operations to prevent overheat conditions that is commonly occurred with conventional linear chargers. The AUR9801D reduces charge current for thermal fold-back to ensure product safe operation. The charger automatically re-charges the battery when the battery voltage drops below a recharge threshold. The chip includes a safety timer for setting the fast charge time limit in case of charging a dead battery.
Additional features include preconditioning of an over-discharged battery and charging the battery in a safe temperature range with an NTC thermistor interface. The thermally enhanced DFN package is offered for space limited handheld applications.
The AUR9801D is available in WDFN-3X3-10 package.

特性 Features

Complete Charger for Single-Cell Li-ion Batteries
Charges from either AC Adapter or USB Port
Integrated Power Pass Device with Current Sensing
No External Blocking Diode Required
Pre-charge Condition with Safety Timing
Charger Voltage Accuracy: 0.6%
Programmable Current Limit up to 1A
Sleep Mode for Power Saving
Charge Current Thermal Fold-back
NTC Thermistor Interface for Battery Temperature Monitor
Stand-Alone or Integrated Charger
Ambient Temperature Range: -40°C to +85°C

应用 Application

PDAs, Cell Phones and Smart Phones
Digital Camera, MP3 and Handheld Gamming
Portable Instruments including Medical Handhelds
Self-Charging Battery Packs
Stand-Alone Chargers or USB Port Chargers