BQ24157S Datasheet, PDF (2/45 Pages) Texas Instruments – Full USB Compliance and USB-OTG Support

Not Recommended for New Designs
bq24157S
SLUSB76B – FEBRUARY 2013 – REVISED MAY 2015
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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 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ..................................... 4
7.2 ESD Ratings.............................................................. 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 4
7.5 Electrical Characteristics........................................... 5
7.6 Typical Performance Characteristics ........................ 8
8 Detailed Description ............................................ 11
8.1 Overview ................................................................. 11
8.2 Functional Block Diagrams ..................................... 12
8.3 Feature Description................................................. 15
8.4 Device Functional Modes........................................ 24
8.5 Register Maps ......................................................... 26
9 Application and Implementation ........................ 29
9.1 Application Information............................................ 29
9.2 Typical Application .................................................. 29
10 Power Supply Recommendations ..................... 34
10.1 System Load After Sensing Resistor .................... 34
11 Layout................................................................... 36
11.1 Layout Guidelines ................................................. 36
11.2 Layout Example .................................................... 36
12 Device and Documentation Support ................. 38
12.1 Device Support...................................................... 38
12.2 Documentation Support ........................................ 38
12.3 Trademarks ........................................................... 38
12.4 Electrostatic Discharge Caution ............................ 38
12.5 Glossary ................................................................ 38
13 Mechanical, Packaging, and Orderable
Information ........................................................... 39
13.1 Package Summary................................................ 39
4 Revision History
Changes from Revision A (June 2014) to Revision B
Page
• Deleted "Safety Timer with Reset Control" from the Features .............................................................................................. 1
• Changed the package Features From: 2.25 x 2.65 mm To: 2.1 x 2.0 mm ............................................................................ 1
• Changed the BODY SIZE values in the Device Information table ......................................................................................... 1
• Moved T_stg Storage Temperature From: ESD Ratings To: Absolute Maximum Ratings^{(1) (2)} ............................................... 4
• Changed the title of Figure 3 From Battery Detection at Power Up To: Power Up in DEFAULT Mode ................................ 8
• Changed "32S Mode" To: "HOST Mode" and 15 Minute Mode To: DEFAULT Mode in Figure 5 ......................................... 8
• Changed 32-second mode To: HOST mode in the Overview section ................................................................................. 11
• Changed 15-minute operation To: default mode in the Overview section ........................................................................... 11
• Changed 100-ms power-up delay From: No To: Yes in Table 1.......................................................................................... 11
• Changed Figure 19 .............................................................................................................................................................. 14
• Changed text From: "During the normal charging process with HOST control..." To: "During the normal charging
process with HOST control and termination enabled.." ....................................................................................................... 17
• Changed Title From: 15-Minute Safety Timer To: DEFAULT Mode ................................................................................... 17
• Changed 32-second mode To: HOST mode in USB Friendly Power Up ............................................................................ 17
• Changed 15-minute mode To: DEFAULT mode and 32-s mode To: HOST mode in Input Current Limiting at Power
Up ........................................................................................................................................................................................ 17
• Added a NOTE to the Application and Implementation section ........................................................................................... 29
• Changed Figure 30 .............................................................................................................................................................. 33
• Changed Figure 31 .............................................................................................................................................................. 33
• Added Figure 30 .................................................................................................................................................................. 33
Changes from Original (February 2013) to Revision A
Page
• Added the Handling Ratings table, Detailed Description section, Feature Description section, Device Functional
Modes section, Register Maps section, Application and Implementation section. Power Supply Recommendations
section, Layout section, Device and Documentation Support section, Mechanical, Packaging, and Orderable
Information section ................................................................................................................................................................. 1
2
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