SY20751BTYC (SY6928BTYC)

High Integrated Bi-Direction Power Regulator For Single-Cell Battery Power Bank Application

SY20751BTYC High Integrated Bi-Direction Power Regulator For Single-Cell Battery Power Bank Application Datasheet

Parameters
Features
Description

Part number	SY20751BTYC
Vin (max) (V)	5.7
Vin (min) (V)	4.5
Absolute max Vin (max) (V)
Number of series cells	1
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	dual output data port, adjustable battery level indication, 5% low power alarm
Operating temperature range(°C)
Package	QFN4x4-26

Maximum 18V Input Voltage Rating
Build in Low R_dson Power Path NFETs and Power Switches
Programmable Boost Switching Frequency
Maximum 3A Charge Current
Maximum 3A Boost Output Current
4.2V/4.35V/4.4V Selectable Cell Voltage
+/-0.5% Battery Cell Voltage Tolerance
4 LEDs Battery Level Indicator
Trickle Current / Constant Current / Constant Voltage Charge Mode
Adaptive Input Current Limit
Input Voltage UVLO and OVP
Output Divider Mode, DCP Mode Handshaking
Boost Auto Start When Portable Device Inserts
Boost Auto Shutdown with Light Load
Boost Cycle-by-cycle Peak Current Limit
Boost Programmable Output Current Limit Boost Output Short Circuit Protection
Thermal Shutdown Protection
Compact Package: QFN4×4-26

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Evaluation Board

Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board

EVB_SY20751BTYC

The EVB_SY20751BTYC is used to evaluate 4.5-5.7V input bi-directional regulator SY20751BTYC.

Technical Documentation

Title	Date
Silergy_Catalog_Q2_2026	2026-06-12

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