SY20766RAC (SY6986RAC)

Ÿ  Integrated Synchronous Boost with 18V Rating Low R_DSON FETs for High Charge Efficiency

Ÿ  Trickle Current / Constant Current / Constant Voltage Charge Mode

Ÿ  Programmable Threshold for Input Voltage DPM Function

Ÿ  Programmable Threshold for Input Current DPM Function

Ÿ  Maximum 1.6A Constant Charge Current

Ÿ  Programmable Constant Charge Current

Ÿ  Selectable Constant Voltage

Ÿ  Programmable Charge Timeout

Ÿ  System Power Path Management Function

Ÿ  External Separated Control Function for Boost and BATFET

Ÿ  Up to 200mA Cell Balance Current

Ÿ  Cell Voltage Limit Protection during Balance

Ÿ  Battery Pack Temperature Monitor Complying with JEITA Standard

Ÿ  Input and Charge Status Indication

Ÿ  Input Voltage UVLO and OVP

Ÿ  BAT OVP and Short Protection

Ÿ  Over Temperature Protection

Ÿ  Low Profile QFN3×3 Package

The SY20766 is a 1.6A two-cell synchronous Boost Li-ion battery charger for 3.6-5.5V input voltage, which integrates 500kHz switching frequency and full protection functions. The charge current up to 1.6A can be programmed by external resistor for different portable applications. It also has programmable charge timeout, input current and input voltage DPM functions for safety battery charge operation.

The SY20766 can support supplement mode. When input power cannot support system load, IC will allow the reverse current from battery to support system load together with input power.

The SY20766 supports battery cell balance function to remove voltage difference between two cells and has each cell voltage limit protection during balance.

It consists of 18V rating FETs with extremely low ON resistance to achieve high charge efficiency and simple peripheral circuit design.

The SY20766 is available with small QFN3×3 package to provide a small PCB area application.