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SY20753QYC (SY6991QYC)

Not recommended for new designs
Wide Input, High Current, Bi-directional Regulator for Single Cell Li-Ion Battery Power Bank Application
Datasheet
SY20753QYC Wide Input, High Current, Bi-directional Regulator for Single Cell Li-Ion Battery Power Bank Application Datasheet
Part number SY20753QYC
Vin (max) (V) 13.5
Vin (min) (V) 4
Absolute max Vin (max) (V)
Number of series cells Single Cell
Charge voltage (max) (V)
Charge voltage (min) (V)
Charge current (max) (A) 4.5
Charge current (min) (A)
Integrated FETs(Yes/No)
Topology
Control interface
Features I2C controlled, USB and Protocol IC Compliance, 20W Boost
Operating temperature range(°C)
Package QFN4x4-20
  • Integrated N-Channel MOSFETs with 16V Voltage Rating and Extremely Low RDSON
  • High Switching Frequency to Minimize Peripheral Circuit Design
  • Trickle Current / Constant Current / Constant Voltage Charging Mode
  • Maximum 5A Battery Charging Current
  • Maximum 4.5A/5V or 2.25A/12V System Current in Battery Power Supply Mode
  • USB Port Identifier for Various Input Current Limit
  • Automatic Input Power Source Detection
  • I2C controls

      - Programmable Battery Charge Voltage

      - Programmable Constant Current Charging

      - Programmable Over Current Limit for SYS load

      - Programmable Input Current DPM

      - Programmable Input Voltage DPM

      - Programmable Battery Charging Timeout

  • Charging Shutdown Control
  • Charging Mode CV Tolerance +/-0.5%
  • DO+/DO- Divider Mode Compliant
  • DO+/DO- QC3.0 Compliant
  • OUTPUT MTK PE Compliant
  • Host Enable Control for Standby Mode in Supply Mode
  • Over Temperature Protection
  • Battery UTP/OTP in Charging Mode  and Supply Mode
  • Charge Status Indication
  • Light load Status Indication

Evaluation Board

  • 20753-

    Photo of evaluation board

  • 20753

    Photo of evaluation board

  • 20753--

    Photo of evaluation board

EVB_SY20753QYC

The EVB_SY20753QYC is used to evaluate 4.0-13.5VIN bi-directional regulator SY20753QYC.

Technical Documentation

Title Date
Silergy_Catalog_Q2_2026 2026-06-12

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