LI-ION/LI POLYMER BATTERY CHARGER
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.
Pin 1 Mark
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
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.
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
The AUR9801D is available in WDFN-3X3-10 package.
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
Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Document number: DS39016 Rev. 1 - 2
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© Diodes Incorporated