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SY20745RBC (SY6915RBC)

Not recommended for new designs
SMBus Controlled 1-4 Cell Battery Charger Controller Supporting Boost Mode
Datasheet
SY20745RBC SMBus Controlled 1-4 Cell Battery Charger Controller Supporting Boost Mode Datasheet
Part number SY20745RBC
Vin (max) (V) 25
Vin (min) (V) 4.5
Absolute max Vin (max) (V)
Number of series cells 1,2,3,4
Charge voltage (max) (V)
Charge voltage (min) (V)
Charge current (max) (A) 8.128
Charge current (min) (A)
Integrated FETs(Yes/No)
Topology
Control interface
Features SMBUS Controls
Operating temperature range(°C)
Package QFN3.5×3.5-20
  • Input Voltage Range 4.5V to 25V
  • SMBus Controlled Synchronous Buck Controller with 615kHz, 750kHz and 885kHz Programmable Switching Frequency
  • SMBus Controls

      - Battery Charge Voltage (1.024V – 19.2V)
      - Battery Charge Current (128mA – 8.128A)
      - Adapter Input Current Limit (128mA – 8.064A)

  • ±0.5% Battery Charge Voltage Accuracy
  • ±3% Battery Charge Current Accuracy
  • ±3% Adapter Input Current Limit Accuracy
  • ±2% 20x Input Current or Charge Current Amplifier Output Accuracy
  • Internal Charge Pumps for AC Blocking NFETs and BAT NFET
  • Integrated Loop Compensation
  • Internal Soft Start
  • Programmable Adapter Detection and Indicator Support Air-line Adapter
  • Support 1, 2, 3 and 4 Cells Battery Pack
  • Support Boost Mode
  • Battery LEARN Function and  Programmable Battery Depletion Threshold
  • Cycle-by-cycle Peak Current Limit
  • Battery Over Voltage Protection and Short Protection
  • Inductor and MOSFET Short Circuit Protection
  • Thermal Shutdown with Hysteresis
  • 0.65mA(0.8mA Max) Adapter Standby Quiescent Current
  • 5μA Off-state Battery Discharge Current
  • Package QFN 3.5x3.5-20
 

Evaluation Board

  • 20745-

    Photo of evaluation board

  • 20745

    Photo of evaluation board

  • 20745--

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  • 20745---

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EVB_SY20745RBC

The EVB_SY20745RBC is used to evaluate SMBus cntrolled 1-4 cell battery charger controller SY20745RBC.

Technical Documentation

Title Date
Silergy_Catalog_Q2_2026 2026-06-12

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