SGM41519.pdf? High Efficiency, 1.5MHz, Synchronous Buck Charger
93.8% Charge Efficiency at 1.02A from 5V Input
89.8% Charge Efficiency at 2A from 9V Input
Optimized for 9V/12V Input
Selectable PFM Mode for Light Load Efficiency
? Boost Mode Support
Output Voltage Range from 4.85V to 5.3V
Boost Efficiency of 93.5% at 0.5A and 92.2% at 1A
Output Short Circuit Protection
Selectable PFM Mode for Light Load Operations
PMID_GD Pin Control External P-MOSFET for
Protection against Fault Conditions
? Automatic Switch between Charge and Boost Mode
? 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 3.2A with
100mA Resolution) to Support USB 2.0 and USB 3.0
Standards and High Voltage Adaptors
Maximum Power Tracking by Programmable Input Voltage
Limit (VINDPM) with Selectable Offset
VINDPM Tracking of Battery Voltage
? High Battery Discharge Efficiency with 26mΩ 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 Capability
by Battery FET Control
? Flexible Autonomous and I2C Operation Modes for
Optimal System Performance
? Fully Integrated Switches, Current Sense and Compensation
? 2.5μA Ship Mode Low Battery Leakage Current
? High Accuracy
±0.5% Charge Voltage Regulation (8mV/Step)
±5% Charge Current Regulation at 1.5A
±5% Charge Current Regulation at 0.4A
±20% Charge Current Regulation at 10mA
±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
? High-efficiency, 1.5-MHz, synchronous SwitchMode buck charger
95.5% charge efficiency at 0.5 A and 94.5%efficiency at 1 A
±0.5% charge voltage regulation (10-mV step)
I2C programmable JEITA profile of charge
voltage, current and temperature thresholds
Low termination current with high accuracy 20mA±10 mA
Small inductor form factor of 2.5 x 2.0 x 1.0mm3
? Single input supporting USB input,
high-voltageadapter, or wireless power
Support 4-V to 13.5-V input voltage range
with22-V absolute max input rating
Programmable input current limit (IINDPM)
withI2C (100 mA to 3.2 A, 100-mA/step)
Maximum power tracking by input
voltage limit(VINDPM) up to 5.4 V
VINDPM threshold automatically
tracks batteryvoltage
? Narrow voltage DC (NVDC)
power pathmanagement
System instant-on with no battery
or deeplydischarged battery
? Flexible I2C configuration and autonomous
charging for optimal system performance
? High integration includes all MOSFETs,
currentsensing and loop compensation
? Low RDSON 19.5-mΩ BATFET to minimize
charging loss and extend battery run time
BATFET control for Ship Mode, and full
systemreset with and without adapter
? 7-μA low battery leakage current in Ship Mode
? 9.5-μA low battery leakage current with systemstandby
? High accuracy battery charging profile
±6% charge current regulation
±7.5% input current regulation
Remote battery sensing to charge faster
Programmable top-off timer for full batterycharging
