Features
 Input Rating of 32 V
 Input Overvoltage Protection with 6.7 V
 Input Voltage Dynamic Power Management
 10% Charge Current Accuracy
 1% Charge Voltage Accuracy
 Pin ISET2 can select 100 mA or 500 mA
Maximum Input Current Limit
 Programmable Termination and Trickle
Threshold
 Fixed 10 Hours Safety Timer
 Status Indication – Charging/Done
 Integrated Auto Start Function for Production
 125°C Thermal Regulation
 155°C Thermal Shutdown Protection
 BAT Short-Circuit Protection
 Charge Solutions for JEITA
1. No charge at ‘Temp>45°C’ & ‘Temp<0°C’;
2. 0.2*CC (Constant-Current) Temp at 0~10°C;
3. Constant-Current Temp at 10~45°C.
4. DIO5081 has dedicated BAT_V pin for
battery voltage sense.
 Automatic Termination and Timer Disable
Mode (TTDM) for Absent Battery Pack With
Thermistor
 Package: DQFN-10
Applications
 Low-Power Handheld Devices
 Smart Phones
 MP3 Players
 PDAs
Descriptions
DIO5081 is highly integrated lithium ion and
lithium polymer linear chargers, suitable for
portable applications with limited space. The
device is powered by a USB port or AC adapter.
The high input voltage range with input
overvoltage protection supports low-cost,
unregulated adapters.
DIO5081 has a single power output and can
charge batteries. If the average system load fails
to charge the battery during the 10-hour safety
timer, the system load can be connected in
parallel with the battery.
Battery charging has experienced three stages:
conditioning, constant current and constant
voltage. In all charging stages, IC junction
temperature is monitored by the internal control
loop. When the charging current exceeds the
internal temperature threshold, the internal
control loop will reduce the charging current.
The charger power level and charging current
induction function are fully integrated. The
charger has high precision current and voltage
regulation circuit function, charging status
display, charging termination function.
Trickle-charge current and terminal current
threshold can be programmed by external
resistance on DIO5081. The value of constant
current can also be programmed by an external
resistance.