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bq24298 I2C Controlled 3A Single Cell USB Charger With Narrow VDC Power Path Management and Adjustable Voltage USB OTG
SLUSC59A
April 2015 – December 2016
PRODUCTION DATA.
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bq24298 I2C Controlled 3A Single Cell USB Charger With Narrow VDC Power Path Management and Adjustable Voltage USB OTG
1
Features
2
Applications
3
Description
4
Revision History
5
Description (Continued)
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Timing Requirements
7.7
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Device Power Up
8.3.1.1
Power-On-Reset (POR)
8.3.1.2
Power Up from Battery without DC Source
8.3.1.2.1
BATFET Turn Off
8.3.1.2.2
Shipping Mode
8.3.1.2.3
BATFET System Reset
8.3.1.3
Power Up from DC Source
8.3.1.3.1
REGN LDO
8.3.1.3.2
Input Source Qualification
8.3.1.3.3
Input Current Limit Detection
8.3.1.3.4
PSEL/OTG Pins Set Input Current Limit
8.3.1.3.5
HIZ State with 100mA USB Host
8.3.1.3.6
Force Input Current Limit Detection
8.3.1.4
Converter Power-Up
8.3.1.5
Boost Mode Operation from Battery
8.3.2
Power Path Management
8.3.2.1
Narrow VDC Architecture
8.3.2.2
Dynamic Power Management
8.3.2.3
Supplement Mode
8.3.3
Battery Charging Management
8.3.3.1
Autonomous Charging Cycle
8.3.3.2
Battery Charging Profile
8.3.3.3
Thermistor Qualification
8.3.3.3.1
Cold/Hot Temperature Window
8.3.3.4
Charging Termination
8.3.3.4.1
Termination When REG02[0] = 1
8.3.3.5
Charging Safety Timer
8.3.3.5.1
Safety Timer Configuration Change
8.3.3.6
USB Timer When Charging from USB100mA Source
8.3.4
Status Outputs (PG, STAT, and INT)
8.3.4.1
Power Good Indicator (PG) (bq24298)
8.3.4.2
Charging Status Indicator (STAT)
8.3.4.3
Interrupt to Host (INT)
8.3.5
Protections
8.3.5.1
Input Current Limit on ILIM
8.3.5.2
Thermal Regulation and Thermal Shutdown
8.3.5.3
Voltage and Current Monitoring in Buck Mode
8.3.5.3.1
Input Over-Voltage (ACOV)
8.3.5.3.2
System Over-Voltage Protection (SYSOVP)
8.3.5.4
Voltage and Current Monitoring in Boost Mode
8.3.5.4.1
Over-Current Protection
8.3.5.4.2
VBUS Over-Voltage Protection
8.3.5.4.3
Output Short Protection
8.3.5.5
Battery Protection
8.3.5.5.1
Battery Over-Voltage Protection (BATOVP)
8.3.5.5.2
Battery Short Protection
8.4
Device Functional Modes
8.4.1
Host Mode and Default Mode
8.4.1.1
Plug in USB100mA Source with Good Battery
8.4.1.2
USB Timer When Charging from USB100mA Source
8.5
Programming
8.5.1
Serial Interface
8.5.1.1
Data Validity
8.5.1.2
START and STOP Conditions
8.5.1.3
Byte Format
8.5.1.4
Acknowledge (ACK) and Not Acknowledge (NACK)
8.5.1.5
Slave Address and Data Direction Bit
8.5.1.5.1
Single Read and Write
8.5.1.5.2
Multi-Read and Multi-Write
8.6
Register Map
8.6.1
I2C Registers
8.6.1.1
Input Source Control Register REG00 [reset = 00110xxx, or 3x]
8.6.1.2
Power-On Configuration Register REG01 [reset = 00011011, or 0x1B]
8.6.1.3
Charge Current Control Register REG02 [reset = 01100000, or 60]
8.6.1.4
Pre-Charge/Termination Current Control Register REG03 [reset = 00010001, or 0x11]
8.6.1.5
Charge Voltage Control Register REG04 [reset = 10110010, or 0xB2]
8.6.1.6
Charge Termination/Timer Control Register REG05 [reset = 11011100, or 0xDC]
8.6.1.7
Boost Voltage/Thermal Regulation Control Register REG06 [reset = 01110011, or 0x73]
8.6.1.8
Misc Operation Control Register REG07 [reset = 01001011, or 4B]
8.6.1.9
System Status Register REG08
8.6.1.10
New Fault Register REG09
8.6.1.11
Vender / Part / Revision Status Register REG0A
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Inductor Selection
9.2.2.2
Input Capacitor
9.2.2.3
Output Capacitor
9.2.3
Application Performance Plots
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Documentation Support
12.1.1
Related Documentation
12.2
Receiving Notification of Documentation Updates
12.3
Community Resources
12.4
Trademarks
12.5
Electrostatic Discharge Caution
12.6
Glossary
13
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
RTW|24
MPQF167C
Thermal pad, mechanical data (Package|Pins)
RTW|24
QFND125K
Orderable Information
slusc59a_oa
slusc59a_pm
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