Single-Cell Battery Charger
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bq25601
SLUSCK5 – MARCH 2017
bq25601 I2C Controlled 3-A Single-Cell Battery Charger
for High Input Voltage and Narrow Voltage DC (NVDC) Power Path Management
1 Features
•1 High-Efficiency, 1.
5-MHz, Synchronous SwitchMode Buck Charger
– 92% Charge Efficiency at 2 A from 5-V Input
– Optimized for USB Voltage Input (5 V)
– Selectable Low Power Pulse Frequency Modulation (PFM) Mode for Light Load Operations
• Supports USB On-The-Go (OTG)
– Boost Converter With Up to 1.
2-A Output
– 92% Boost Efficiency at 1-A Output
– Accurate Constant Current (CC) Limit
– Soft-Start Up To 500-µF Capacitive Load
– Output Short Circuit Protection
– Selectable Low Power PFM Mode for Light Load Operations
• Single Input to Support USB Input and High Voltage Adapters
– Support 3.
9-V to 13.
5-V Input Voltage Range With 22-V Absolute Maximum Input Voltage Rating
– Programmable Input Current Limit (100 mA to 3.
2 A With 100-mA Resolution) to Support USB 2.
0, USB 3.
0 Standards and High Voltage Adaptors (IINDPM)
– Maximum Power Tracking by Input Voltage Limit Up to 5.
4 V (VINDPM)
– VINDPM Threshold Automatically Tracks Battery Voltage
– Auto Detect USB SDP, DCP and NonStandard Adaptors
• High Battery Discharge Efficiency With 19.
5-mΩ Battery Discharge MOSFET
• Narrow VDC (NVDC) Power Path Management
– Instant-On Works with No Battery or Deeply Discharged Battery
– Ideal Diode Operation in Battery Supplement Mode
• BATFET Control to Support Ship Mode, Wake Up and Full System Reset
• Flexible Autonomous and I2C Mode for Optimal
System Performance
• High Integration Includes All MOSFETs, Current Sensing and Loop Compensation
• High Accuracy
– ±0.
5% Charge Voltage Regulation
– ±5% at 1.
5-A Charge Current Regulation
• Create a Custom Design Using the bq25601 With the WEBENCH® Power Designer
2 Applications
• Smart Phones • Portable Internet Devices and Accessory
3 Description
The bq25601 device is a highly-integra...
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