BQ24266_15 Datasheet, PDF (2/41 Pages) Texas Instruments – bq24266 3A, 30V Standalone Single-Input, Single-Cell Switchmode Li-Ion Battery Charger

bq24266
SLUSBY5F – JUNE 2014 – REVISED AUGUST 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 4
6 Specifications......................................................... 6
6.1 Absolute Maximum Ratings ..................................... 6
6.2 ESD Ratings ............................................................ 6
6.3 Recommended Operating Conditions....................... 6
6.4 Thermal Information ................................................. 7
6.5 Electrical Characteristics........................................... 7
6.6 Switching Characteristics ........................................ 11
6.7 Typical Characteristics ............................................ 12
7 Detailed Description ............................................ 13
7.1 Overview ................................................................. 13
7.2 Functional Block Diagram ....................................... 14
7.3 Feature Description................................................. 16
7.4 Device Functional Modes........................................ 16
8 Applications and Implementation ...................... 26
8.1 Application Information............................................ 26
8.2 Typical Applications ................................................ 26
9 Power Supply Recommendations...................... 31
9.1 Requirements for SYS Output ................................ 31
9.2 Requirements for Charging ..................................... 31
10 Layout................................................................... 32
10.1 Layout Guidelines ................................................. 32
10.2 Layout Example .................................................... 32
11 Device and Documentation Support ................. 33
11.1 Documentation Support ....................................... 33
11.2 Related Links ........................................................ 33
11.3 Community Resources.......................................... 33
11.4 Trademarks ........................................................... 33
11.5 Electrostatic Discharge Caution ............................ 33
11.6 Glossary ................................................................ 33
12 Mechanical, Packaging, and Orderable
Information ........................................................... 33
4 Revision History
Changes from Revision E (December 2014) to Revision F
Page
• Deleted devices bq24265 and bq24267 ................................................................................................................................ 1
• Changed bq2426x To: bq24266 throughout the datasheet ................................................................................................... 1
• Deleted Features: Host-controlled JEITA Compatible NTC Monitoring Input (bq24265)....................................................... 1
• Deleted Features: Voltage-based, JEITA Compatible NTC Monitoring Input (bq24266)....................................................... 1
• Changed text in the Description From: "The bq24265, bq24266, and bq24267 are.." To: "The bq24266 is.."...................... 1
• Changed 1µF to 2.2µF on the DRV pin of the Application Schematic ................................................................................... 1
• Deleted the Device Comparison Table................................................................................................................................... 4
• Deleted the bq24265 pinout image......................................................................................................................................... 4
• Changed the DRV pin description From: "1μF of ceramic capacitance" To: "a 2.2uF, 10V, X5R or better capacitor"
in the Pin Functions table ....................................................................................................................................................... 5
• Set Pin Voltage for DRV on an individual line and change the MAX value to 5.5 V in the Absolute Maximum
Ratings⁽¹⁾ ............................................................................................................................................................................... 6
• Moved the Stroage temperature to Absolute Maximum Ratings⁽¹⁾ ....................................................................................... 6
• Changed the Handling Ratings table To: ESD Ratings table................................................................................................. 6
• Deleted references to BQ24265 and BQ24266 in V_BATREG of the Electrical Characteristics ................................................. 8
• Deleted references to BQ24265 and BQ24266 in K_ISET of the Electrical Characteristics ..................................................... 8
• Deleted text from the Overview section: "The bq24265 allows a host to monitor a NTC thermistor and adjust the
charge current and voltage using the CE1 and CE2 pins." and "The bq24267 features a TS input with HOT/COLD
support only." ........................................................................................................................................................................ 13
• Deleted text from the Charge Profile section: "using CE1 and CE2 (bq24265) or CE (bq24266/7)." ................................. 17
• Deleted text from the Safety Timer in Charge Mode section: " (bq24266/7) and when CE1 and CE2 (bq24265) are
configured according to Table 2. .......................................................................................................................................... 21
• Changed the External NTC Monitoring (CE1, CE2, and TS) section To: External NTC Monitoring (TS) ........................... 21
• Deleted Table "CE1, CE2 Configurations" ........................................................................................................................... 21
• Deleted text from the Application Information section: "but can be used to evaluate the bq24265 or bq24267 as well.
To configure the board to use the bq24265, the /CE1 and /CE2 pins are used to comply with JEITA per Table 2. .......... 26
• Deleted the bq24265 Typical Application No External Discharge FET image .................................................................... 26
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