BQ25601 Datasheet, PDF (1/60 Pages) Texas Instruments – I2C Controlled 3-A, Single-Cell Battery Charger for High Input Voltage and Narrow Voltage DC (NVDC) Power Path Management

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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 Switch-
Mode 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 20-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
• High Battery Discharge Efficiency With 18-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
• 17-µA Low Battery Leakage Current to Support
Ship Mode
• High Accuracy
1
– ±0.5% Charge Voltage Regulation
– ±5% at 1.5-A Charge Current Regulation
– ±10% at 0.9-A Input Current Regulation
• Safety
– Battery Temperature Sensing for Charge and
Boost Mode
– Thermal Regulation and Thermal Shutdown
– Input UVLO and Overvoltage Protection
2 Applications
• Smart Phone, ePOS
• Portable Internet Devices and Accessory
3 Description
The bq25601 device is a highly-integrated 3-A switch-
mode battery charge management and system power
path management device for single cell Li-Ion and Li-
polymer battery. The low impedance power path
optimizes switch-mode operation efficiency, reduces
battery charging time and extends battery life during
discharging phase. The I²C serial interface with
charging and system settings makes the device a
truly flexible solution.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
bq25601
WQFN (24)
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
USB
I²C Bus
Host _{Host Control}
Optional
VBUS
SW
BTST
QON
SYS
BAT
TS
I_{CHG REGN}
+
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.