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BQ25504 View Datasheet(PDF) - Texas Instruments

Part NameDescriptionManufacturer
BQ25504 Ultra Low-Power Boost Converter With Battery Management for Energy Harvester Applications Texas-Instruments
Texas Instruments Texas-Instruments
BQ25504 Datasheet PDF : 36 Pages
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bq25504
SLUSAH0C – OCTOBER 2011 – REVISED JUNE 2015
www.ti.com
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 ......................... 4
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ..................................... 5
7.2 Handling Ratings....................................................... 5
7.3 Recommended Operating Conditions....................... 5
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics........................................... 6
7.6 Typical Characteristics .............................................. 7
8 Detailed Description .............................................. 9
8.1 Overview ................................................................... 9
8.2 Functional Block Diagram ....................................... 10
8.3 Feature Description................................................. 10
8.4 Device Functional Modes........................................ 13
9 Application and Implementation ........................ 16
9.1 Application Information............................................ 16
9.2 Typical Applications ................................................ 18
10 Power Supply Recommendations ..................... 25
11 Layout................................................................... 25
11.1 Layout Guidelines ................................................. 25
11.2 Layout Example .................................................... 26
11.3 Thermal Considerations ........................................ 26
12 Device and Documentation Support ................. 27
12.1 Device Support...................................................... 27
12.2 Documentation Support ........................................ 27
12.3 Trademarks ........................................................... 27
12.4 Electrostatic Discharge Caution ............................ 27
12.5 Glossary ................................................................ 27
13 Mechanical, Packaging, and Orderable
Information ........................................................... 27
4 Revision History
Changes from Revision B (December 2014) to Revision C
Page
• Changed the Test Condition for PIN(CS) in the Electrical Characteristics ............................................................................... 6
• Changed the values for PIN(CS) in the Electrical Characteristics From: TYP = 10, MAX = 50 To: TYP = 15, MAX
deleted ................................................................................................................................................................................... 6
• Changed CFLTR To: CBYP Figure 14 ..................................................................................................................................... 18
• Changed CBYP = 0.1 µF To: CBYP = 0.01 µF in Detailed Design Procedure .................................................................... 18
• Changed CFLTR To: CBYP in Figure 21 .................................................................................................................................. 21
• Changed CBYP = 0.1 µF To: CBYP = 0.01 µF in Detailed Design Procedure .................................................................... 21
• Changed CFLTR To: CBYP in Figure 28 ................................................................................................................................. 23
• Changed CBYP = 0.1 µF To: CBYP = 0.01 µF in Detailed Design Procedure .................................................................... 23
• Changed Figure 34 .............................................................................................................................................................. 26
Changes from Revision A (September 2012) 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
Changes from Original (October 2011) to Revision A
Page
• Added the INTENDED OPERATION section ......................................................................................................................... 9
• Changed the Cold -Start Operation section ......................................................................................................................... 13
• Changed the Boost Converter, Charger Operation section.................................................................................................. 14
• Changed the Storage Element section................................................................................................................................. 14
• Changed the CAPACITOR SELECTION section ................................................................................................................. 17
• Added CFLTR and Notes 1 and 2 to Figure 14 ..................................................................................................................... 18
• Added CFLTR and Notes 1 and 2 to Figure 21 ..................................................................................................................... 21
• Added CFLTR and Notes 1 and 2 to Figure 28 ..................................................................................................................... 23
2
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