SG-Micro SGM41541 | Demoboard SGM41541EVM

Beschreibung

The SGM41541/SGM41542 are battery chargers and system power path management devices with integrated converter and power switches for using with single-cell Li-Ion or Li-polymer batteries. This highly integrated 3.78A device is capable of fast charging and supports a wide input voltage range suitable for smart phones, tablets and portable systems. I2C programming makes it a very flexible powering and charger design solution.The devices include 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.

Eigenschaften

• High Efficiency, 1.5MHz, Synchronous Buck Charger
• 95% Charge Efficiency at 1A from 5V Input
• 91.4% Charge Efficiency at 2A from 9V Input
• Optimized for USB Voltage Input (5V)
• Selectable PFM Mode for Light Load Efficiency
• USB On-The-Go (OTG) Support (Boost Mode)
• Boost Converter with up to 2A Output
• Boost Efficiency of 93.5% at 0.5A and 94.3% at 1A
• Accurate Hiccup Mode Over-Current Protection
• Soft-Start Capable with up to 500μF Capacitive Load
• Output Short Circuit Protection
• Selectable PFM Mode for Light Load Operations
• Single Input for USB or High Voltage Adaptors
• 3.9V to 13.5V Operating Input Voltage Range
• 22V Absolute Maximum Input Voltage Rating
• Programmable Input Current Limit and Dynamic Power Management (IINDPM, 100mA to 3.1A with 100mA Resolution & 3.8A) to Support USB 2.0 andUSB 3.0 Standards and High Voltage Adaptors
• Maximum Power Tracking by Programmable Input Voltage Limit (VINDPM) with Selectable Offset
• VINDPM Tracking of Battery Voltage
• Auto Detect USB BC1.2, SDP, CDP, DCP and Non-Standard Adaptors
• High Battery Discharge Efficiency with 19mΩ Switch
• Narrow Voltage DC (NVDC) Power Path Management
• Instant-On with No or Highly Depleted Battery
• Ideal Diode Operation in Battery Supplement Mode
• Ship Mode, Wake-Up and Full System Reset Capabilityby Battery FET Control
• Flexible Autonomous and I2C Operation Modes for Optimal System Performance
• Fully Integrated Switches, Current Sense and Compensation
• External Direct Charging Path Enable Output
• 9μA Ship Mode Low Battery Leakage Current
• High Accuracy
• ±0.6% Charge Voltage Regulation (8mV/Step)
• ±5% Charge Current Regulation at 2A
• ±10% Input Current Regulation at 0.9A
• Safety
• Battery Temperature Sensing (Charge/Boost Modes)
• Thermal Regulation and Thermal Shutdown
• Input Under-Voltage Lockout (UVLO)
• Input Over-Voltage (ACOV) Protection

Typische Anwendungen

• EPOS Portable Internet Devices and Accessory
• Smart Phones

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers