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SY20743CQCQ (SY6974CQCQ)

Not recommended for new designs
3A, Single Cell Li-Ion DC/DC Switching Charger with I2C Control, USB Detection and OTG JEITA Compliant, Power Path Management
Datasheet
SY20743CQCQ 3A, Single Cell Li-Ion DC/DC Switching Charger with I2C Control, USB Detection and OTG JEITA Compliant, Power Path Management Datasheet
Part number SY20743CQCQ
Vin (max) (V) 13.5
Vin (min) (V) 3.9
Absolute max Vin (max) (V)
Number of series cells Single Cell
Charge voltage (max) (V)
Charge voltage (min) (V)
Charge current (max) (A) 3
Charge current (min) (A)
Integrated FETs(Yes/No)
Topology
Control interface
Features NVDC power path management, OTG, Default Input OVP 14V
Operating temperature range(°C)
Package QFN4x4-24

 

  • High Efficiency 3A 1.5MHz Buck Mode Charger

 

- Support 3.9V-13.5V Input Voltage Range

- Programmable IDPM/VDPM to Support the USB and Adapter

- 3.856V-4.624V Adjustable Charge Voltage

- Support Narrow VDC Power Path Management

- JEITA Compliance

- ±0.5% Charge Voltage Regulation

- Charge Status Outputs for LED or Host Processor

 

  • Maximum 1.2A 1.5MHz Boost OTG Current

 

- 4.85V-5.3V Adjustable OTG Output Voltage

- Selectable OTG Output Current Limit

- ± 1.5% Output Regulation in Boost Mode

- Soft-Start up to 500µF Capacitive Load

- Constant Current (CC) Limit

 

  • Full BATFET Control to Support Shipping Mode, Wake up, and  System Reset
  • Safety

 

- Battery Temperature Sensing for Charge and Boost Mode

- Battery Charging Safety Timer

- Thermal Regulation and Thermal Shutdown

- Input/System over-Voltage Protection

- MOSFET over-Current Protection

  • Low Battery Leakage Current and Support Shipping Mode
  • 4mm x 4mm QFN-24 Package

 

Evaluation Board

  • 20743C-

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  • 20743C

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  • 20743C--

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  • 20743C---

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  • 20743C----

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EVB_SY20743CQCQ

The EVB_SY20743CQCQ  is used to evaluate 3A, single cell Li-Ion DC/DC switching charger SY20743CQCQ.

Technical Documentation

Title Date
Silergy_Catalog_Q2_2026 2026-06-12
QFN4x4-24 2022-05-20

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