Application• Bluetooth™ Headsets, Headphones, Accessories
• Digital Still Cameras
• Mobile Phones
• MP3 Players
• Personal Data Assistants (PDAs)
• Other Li-Ion/Polymer Battery Powered DevicesPinout
Specifications
- USB or AC Adapter System Power Charger
- Programmable from 100mA to 1A Max
- 4.0V ~ 7.5V Input Voltage Range
- Over-Voltage Input Protection up to 28V
- High Level of Integration with Internal:
- Charging Device
- Reverse Blocking Diode
- Current Sensing
- Digital Thermal Regulation
- Charge Current Programming (ISET)
- Charge Termination Current Programming (TERM)
- Charge Timer (CT)
- Battery Temperature Sensing (TS)
- TS Pin Open Detection
- Automatic Recharge Sequencing
- No Trickle Charge Option Available
- Full Battery Charge Auto Turn Off / Sleep State / Charge Termination
- Automatic Trickle Charge for Battery Pre-conditioning
- Battery Over-Voltage and Over-Current Protection
- Emergency Thermal Protection
- Power On Reset
- 16-pin 3x4mm TDFN Package
| Symbol |
Description |
Value |
Units |
| VIN |
IN continuous |
30 |
V |
| VINCHR |
Charger IN continuous |
-0.3 to 7.5 |
V |
| VFLT |
Fault fl ag continuous |
-0.3 to +30 |
V |
| VN |
BAT, STAT, ADPP, EN, ISET, TS, ENOVP, OVP |
-0.3 to VINCHR + 0.3 |
V |
| TJ |
Operating Junction Temperature Range |
-40 to 150 |
|
| TLEAD |
Maximum Soldering Temperature (at Leads) |
300 |
|
Descriptionspan id="lblDescription">
The AAT3783 BatteryManager™ is a single-cell Lithium-Ion (Li-Ion)/Li-Polymer battery charger IC, designed to operate from USB ports, AC adapter inputs, or from a charger adapter up to an input voltage of 6.5V. For increased safety, the AAT3783 also includes over-voltage input protection (OVP) up to 28V.
The AAT3783 precisely regulates battery charge voltage and current for 4.2V Li-Ion/Polymer battery cells through an extremely low RDS(ON) switch. When charged from an adapter or a USB port, the battery charging current can be set by an external resistor up to 1A. In the case of an over-voltage condition in excess of 6.5V, a series switch opens preventing damage to the battery and charging circuitry. With the addition of an external resistor the OVP trip point can be programmed to a level other than the factory set value of 6.5V. In the case of an OVP condition a fault flag is activated.
Battery charge state of AAT3783 is continuously monitored for fault conditions. In the event of an over-current, battery over-voltage, short-circuit or over-temperature failure, the device will automatically shut down, thus protecting the charging device, control system and the battery under charge. A status monitor output pin is provided to indicate the battery charge status by directly driving an external LED. An open-drain power-source detection output (ADPP) is provided to report the power supply status.
The AAT3783 comes in a thermally enhanced, space-saving, Pb-free 16-pin 3x4 mm TDFN package and is specified for operation over the -40C to +85C temperature range.
AAT3783 Data Sheet
