Charger Controller. BQ24610 Datasheet

BQ24610 Controller. Datasheet pdf. Equivalent

Part BQ24610
Description 1- to 6-Cell Synchronous Buck Battery Charger Controller
Feature Product Folder Order Now Technical Documents Tools & Software Support & Community BQ24610, BQ24.
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BQ24610
Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
BQ24610, BQ24617
SLUS892D – DECEMBER 2009 – REVISED DECEMBER 2019
BQ2461x Stand-Alone 1- to 6-Cell Synchronous Buck Battery Charger Controller
1 Features
1 600-kHz NMOS-NMOS Synchronous buck
converter
• Stand-alone charger support for li-ion or li-polymer
• 5-V to 28-V VCC Input operating range and
supports 1- to 6-battery cells (BQ24610)
• 5-V to 24-V VCC Input operating range and
supports 1- to 5-battery cells (BQ24617)
• Up to 10-A charge current and adapter current
• High-accuracy voltage and current regulation
– ±0.5% Charge voltage accuracy
– ±3% Charge current accuracy
– ±3% Adapter current accuracy
• Integration
– Automatic system power selection from
adapter or battery
– Non Power Path option for low total BOM cost
– Internal loop compensation and soft start
– Dynamic power management
• Safety protection
– Input overvoltage protection
– Battery thermistor sense hot and cold charge
suspend
– Battery detection
– Reverse protection input FET
– Programmable safety timer
– Charge overcurrent protection
– Battery short protection
– Battery overvoltage protection
– Thermal shutdown
• Status Outputs
– Adapter present
– Charger operation status
• Charge enable pin
• 6-V Gate drive for synchronous buck converter
• Energy star low quiescent current Iq
– < 15-µA Off-state battery discharge current
– < 1.5-mA Off-state input quiescent current
2 Applications
• Netbooks, mobile internet devices, and ultra-
mobile PCs
• Personal digital assistants (PDAs)
• Handheld terminals
• Industrial and medical equipment
• Portable equipment
3 Description
The BQ2461x is a highly integrated Li-ion, Li-polymer
or Lead-acid switched-mode battery charge
controller. The device offers a constant-frequency
synchronous switching PWM controller with high-
accuracy charge current and voltage regulation,
charge preconditioning, termination, adapter current
regulation, and charge status monitoring.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
BQ24610
BQ24617
VQFN (24)
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
ADAPTER
Simplified Schematic
SYSTEM
ACP
ACDRV
CE
VREF
ISET1
ISET2
ACSET
ACN
BATDRV
HIDRV
PH
LODRV
Battery
pack
VREF
ADAPTER
STAT1
STAT2
PG
TS
SRP
SRN
VFB
TTC
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.



BQ24610
BQ24610, BQ24617
SLUS892D – DECEMBER 2009 – REVISED DECEMBER 2019
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (continued)......................................... 3
6 Device Comparison Table..................................... 3
7 Pin Configuration and Functions ......................... 4
8 Specifications......................................................... 5
8.1 Absolute Maximum Ratings ...................................... 5
8.2 ESD Ratings.............................................................. 6
8.3 Recommended Operating Conditions....................... 6
8.4 Thermal Information .................................................. 6
8.5 Electrical Characteristics........................................... 7
8.6 Typical Characteristics ............................................ 11
9 Detailed Description ............................................ 15
9.1 Overview ................................................................. 15
9.2 Functional Block Diagram ....................................... 16
9.3 Feature Description................................................. 17
9.4 Device Functional Modes........................................ 26
10 Application and Implementation........................ 27
10.1 Application Information.......................................... 27
10.2 Typical Applications .............................................. 27
11 Power Supply Recommendations ..................... 34
12 Layout................................................................... 34
12.1 Layout Guidelines ................................................. 34
12.2 Layout Example .................................................... 35
13 Device and Documentation Support ................. 36
13.1 Device Support...................................................... 36
13.2 Related Links ........................................................ 36
13.3 Receiving Notification of Documentation Updates 36
13.4 Support Resources ............................................... 36
13.5 Trademarks ........................................................... 36
13.6 Electrostatic Discharge Caution ............................ 36
13.7 Glossary ................................................................ 36
14 Mechanical, Packaging, and Orderable
Information ........................................................... 36
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (April 2015) to Revision D
Page
• Changed title ......................................................................................................................................................................... 1
• Added Non Power Path option for low total BOM cost to Features ....................................................................................... 1
• Deleted 30 ns Driver Dead-Time and 99.5% Maximum Effective Duty Cycle from Features ................................................ 1
• Added Lead-acid to Description paragragh ........................................................................................................................... 1
• Added Figure 13 .................................................................................................................................................................. 13
• Added paragraph for Figure 20 ........................................................................................................................................... 27
• Added Simplified System without Power Path or DPM section ........................................................................................... 32
• Added Lead-Acid Charging System section ........................................................................................................................ 33
Changes from Revision B (September 2013) to Revision C
Page
• Added ESD Ratings 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 Revision A (October 2011) to Revision B
Page
• Changed Figure 15, pin VLTFH to: VLTF_HYS .......................................................................................................................... 21
Changes from Original (December 2009) to Revision A
Page
• Corrected equation for calculating RT2 ................................................................................................................................ 22
• Corrected equation for calculating ICOUT .............................................................................................................................. 29
2
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