SGM41510.pdf
No.11023
● High Efficiency, 1.5MHz, Synchronous Buck Charger
● USB On-The-Go (OTG) Support (Boost Mode)
● Single Input for USB or High Voltage Adapters
● Resistance Compensation (IRCOMP) Function
● High Battery Discharge Efficiency with 15mΩ Switch
● Narrow Voltage DC (NVDC) Power Path Management
● Ship Mode, Wake-Up and Full System Reset Capability
by Battery FET Control
● Flexible Autonomous and I2C Operation Modes for Optimal
System Performance
● Fully Integrated Switches, Current Sense and Compensation
● 10μA Ship Mode Low Battery Leakage Current
● High Accuracy
±0.5% Charge Voltage Regulation
● Safety
Thermal Regulation and Thermal Shutdown
Input Under-Voltage Lockout (UVLO)
Input Over-Voltage (ACOV) Protection
The SGM41510 is a battery charger and system power path management device with integrated converter and power switches for use with single-cell Li-Ion or Li-polymer batteries. This highly integrated 5A device is capable of fast charging and supports up to 14V input voltage suitable for smart phones, tablets and portable systems. During discharging phase, the low impedance power path optimizes the efficiency and reduces the battery charging time. It integrates resistance compensation (IRCOMP) to deliver maximum charging power to battery. I2C programming makes it a very flexible powering and charger design solution.
The device includes four main power switches: input reverse blocking FET (RBFET, Q1), high-side switching FET for buck or boost mode (HSFET, Q2), low-side switching FET for buck or boost mode switching (LSFET, Q3) and battery FET that controls the interconnection of the system and battery (BATFET, Q4). The bootstrap diode for the high-side gate driving is also integrated. The internal power path has a very low impedance that reduces the charging time and maximizes the battery discharge efficiency. Moreover, the input voltage and current regulations provide maximum charging power delivery to the battery with various types of input sources.
The device also meets USB On-The-Go (OTG) operation power rating specification by supplying 5V (adjustable 4.5V to 5.5V) on VBUS pin with a default current limit of 2.4A (adjustable 1.2A to 4A).
