BQ24161B_15 Datasheet, PDF (2/52 Pages) Texas Instruments – bq2416xx 2.5A, Dual-Input, Single-Cell Switched-Mode Li-Ion Battery Charger with Power Path Management and I2C Interface

bq24160, bq24160A, bq24161
bq24161B, bq24163, bq24168
SLUSAO0F – NOVEMBER 2011 – REVISED JULY 2014
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Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Application Schematic .......................................... 1
5 Revision History..................................................... 2
6 Device Comparison Table..................................... 4
7 Pin Configuration and Functions ......................... 4
8 Specifications......................................................... 6
8.1 Absolute Maximum Ratings ...................................... 6
8.2 Handling Ratings....................................................... 6
8.3 Recommended Operating Conditions....................... 6
8.4 Thermal Information .................................................. 7
8.5 Electrical Characteristics........................................... 7
8.6 Typical Characteristics ............................................ 10
9 Detailed Description ............................................ 12
9.1 Overview ................................................................. 12
9.2 Functional Block Diagram ....................................... 13
9.3 Feature Description................................................. 14
9.4 Device Functional Modes........................................ 26
9.5 Programming........................................................... 26
9.6 Register Maps ......................................................... 29
10 Application and Implementation........................ 34
10.1 Application Information.......................................... 34
10.2 Typical Application ............................................... 34
11 Power Supply Recommendations ..................... 38
11.1 Requirements for SYS Output .............................. 38
11.2 Requirements for Charging ................................... 38
12 Layout................................................................... 39
12.1 Layout Guidelines ................................................. 39
12.2 Layout Example .................................................... 40
13 Device and Documentation Support ................. 41
13.1 Related Links ........................................................ 41
13.2 Trademarks ........................................................... 41
13.3 Electrostatic Discharge Caution ............................ 41
13.4 Glossary ................................................................ 41
14 Mechanical, Packaging, and Orderable
Information ........................................................... 41
5 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision E (November 2013) to Revision F
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 the Ordering Information table to the Device Comparison Table ........................................................................... 4
• Changed to V_{BAD_SOURCE} include values for "During Bad Source Detection" ......................................................................... 8
• Changed the Functional Block Diagram. Changed the device numbers above D+/D- and PSEL....................................... 13
• Changed the PWM Controller in Charge Mode section to include the soft-start function .................................................... 15
• Changed the Battery Charging Process section. New text added starting with "The bq2416xx monitors the charging
current.." ............................................................................................................................................................................... 15
• Changed the Input Source Connected section..................................................................................................................... 16
• Changed the Input Source Connected section..................................................................................................................... 18
• Added the Reverse Boost (Boost Back) Prevention Circuit section..................................................................................... 24
Changes from Revision D (November 2012) to Revision E
Page
• Added Feature: Compatible with MaxLife Technology for Faster Charging When Used in Conjunction With bq27530 ....... 1
• Changed From: QFN-24 Package To: VQFN-24 Package throughout the data sheet.......................................................... 1
Changes from Revision C (October 2012) to Revision D
Page
• Changed the Ordering Information table to include the WSCP package for bq24161BRGR and bq24161BYFF................. 4
2
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