BQ24296_15 Datasheet, PDF (2/55 Pages) Texas Instruments – bq2429x I2C Controlled 3-A Single Cell USB Charger With Narrow VDC Power Path Management and Adjustable Voltage USB OTG

bq24296, bq24297
SLUSBP6B – SEPTEMBER 2013 – REVISED NOVEMBER 2014
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Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (Continued) ........................................ 3
6 Device Comparison Table..................................... 3
7 Pin Configuration and Functions ......................... 4
8 Specifications......................................................... 6
8.1 Absolute Maximum Ratings ...................................... 6
8.2 ESD Ratings ............................................................ 6
8.3 Recommended Operating Conditions....................... 6
8.4 Thermal Information .................................................. 7
8.5 Electrical Characteristics........................................... 7
8.6 Timing Requirements .............................................. 11
8.7 Typical Characteristics ............................................ 11
9 Detailed Description ............................................ 14
9.1 Overview ................................................................. 14
9.2 Functional Block Diagram ....................................... 15
9.3 Feature Description................................................. 16
9.4 Device Functional Modes........................................ 28
9.5 Programming........................................................... 29
9.6 Register Map........................................................... 33
10 Application and Implementation........................ 40
10.1 Application Information.......................................... 40
10.2 Typical Application ................................................ 40
11 Power Supply Recommendations ..................... 45
12 Layout................................................................... 45
12.1 Layout Guidelines ................................................. 45
12.2 Layout Example .................................................... 46
13 Device and Documentation Support ................. 47
13.1 Documentation Support ....................................... 47
13.2 Related Links ........................................................ 47
13.3 Trademarks ........................................................... 47
13.4 Electrostatic Discharge Caution ............................ 47
13.5 Glossary ................................................................ 47
14 Mechanical, Packaging, and Orderable
Information ........................................................... 47
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (October 2013) to Revision B
Page
• Added Handling Rating table, Feature Description section, Device Functional Modes, Application and
Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation
Support section, and Mechanical, Packaging, and Orderable Information section................................................................ 1
• Changed front page schematic............................................................................................................................................... 1
• Changed REG01[4] = 1 to REG01[5] = 1 in OTG description................................................................................................ 4
• Added (10kΩ NTC thermister only) to QON description ........................................................................................................ 5
• Added ESD information to Handling Ratings ........................................................................................................................ 6
• Changed I_CHG = 1792 mA in I_{ICHG_REG_ACC} test conditions ...................................................................................................... 8
• Changed falling to rising in V_HTF ............................................................................................................................................. 9
• Changed V_HTF TYP to 47.2% ................................................................................................................................................. 9
• Changed Input high threshold (OTG) MIN to 1.1 V.............................................................................................................. 10
• Changed Table 3 ................................................................................................................................................................. 19
• Changed Figure 15 .............................................................................................................................................................. 22
• Changed RT1 = 5.25 kΩ ..................................................................................................................................................... 25
• Deleted and LSFET from Voltage and Current Monitoring in Buck Mode description ......................................................... 27
• Deleted HSFET and from Voltage and Current Monitoring in Boost Mode description ....................................................... 28
• Changed text in Over-Current Protection ............................................................................................................................ 28
• Changed REG09[5] to REG09[3] in Battery Over-Voltage Protection (BATOVP) section ................................................... 28
• Changed REG09 Bit 3 description 1 – Battery OVP ........................................................................................................... 39
Changes from Original (September 2013) to Revision A
Page
• Deleted H from bq24297 PART NUMBER ............................................................................................................................. 1
2
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