LP3910 Datasheet, PDF (2/72 Pages) Texas Instruments – Power Management IC for Hard-Drive-Based Portable Media Players

LP3910
SNVS481M – NOVEMBER 2006 – REVISED DECEMBER 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Tables................................... 3
6 Pin Configuration and Functions ......................... 5
7 Specifications......................................................... 7
7.1 Absolute Maximum Ratings ...................................... 7
7.2 ESD Ratings.............................................................. 7
7.3 Recommended Operating Conditions....................... 7
7.4 Thermal Information .................................................. 7
7.5 Electrical Characteristics........................................... 8
7.6 Electrical Characteristics: I²C Interface ................... 8
7.7 Electrical Characteristics: Li-Ion Battery Charger .... 9
7.8 Detection and Timing .............................................. 10
7.9 Output Electrical Characteristics: CHG, STAT........ 10
7.10 Output Electrical Characteristics: NRST, IRQB,
ONSTAT................................................................... 10
7.11 Input Electrical Characteristics: USBSUSP,
USBISEL .................................................................. 11
7.12 Input Electrical Characteristics: POWERACK,
ONOFF, LDO2EN, BUCK1EN ................................. 11
7.13 Electrical Characteristics: LDO1 Low Dropout Linear
Regulators................................................................ 11
7.14 Electrical Characteristics: LDO2 Low Dropout Linear
Regulator.................................................................. 12
7.15 Electrical Characteristics: Buck1 Converter ......... 12
7.16 Electrical Characteristics: Buck2 Converter.......... 13
7.17 Electrical Characteristics: Buck-Boost .................. 13
7.18 Electrical Characteristics: ADC ............................. 14
7.19 I²C Timing Requirements...................................... 14
7.20 USB Timing Requirements ................................... 15
7.21 Typical Characteristics ......................................... 16
8 Detailed Description ............................................ 24
8.1 Overview ................................................................. 24
8.2 Functional Block Diagram ....................................... 26
8.3 Feature Description................................................. 27
8.4 Device Functional Modes........................................ 43
8.5 Programming........................................................... 50
8.6 Register Maps ......................................................... 53
9 Application and Implementation ........................ 61
9.1 Application Information............................................ 61
9.2 Typical Application .................................................. 61
10 Power Supply Recommendations ..................... 68
11 Layout................................................................... 68
11.1 Layout Guidelines ................................................ 68
11.2 Layout Example ................................................... 69
11.3 Thermal Performance of the WQFN Package ...... 70
12 Device and Documentation Support ................. 71
12.1 Device Support...................................................... 71
12.2 Documentation Support ........................................ 71
12.3 Community Resources.......................................... 71
12.4 Trademarks ........................................................... 71
12.5 Electrostatic Discharge Caution ............................ 71
12.6 Glossary ................................................................ 71
13 Mechanical, Packaging, and Orderable
Information ........................................................... 71
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision L (March 2013) to Revision M
Page
• Added Device Information and Pin Configuration and Functions sections, ESD Ratings and Thermal Information
tables, Feature Description, Device Functional Modes, Application and Implementation, Power Supply
Recommendations, Layout, Device and Documentation Support, and Mechanical, Packaging, and Orderable
Information sections................................................................................................................................................................ 1
Changes from Revision K (February 2012) to Revision L
Page
• Changed layout of National Data Sheet to TI format ........................................................................................................... 68
2
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