SLUS892D
December 2009 – December 2019
BQ24610
,
BQ24617
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Simplified Schematic
4
Revision History
5
Description (continued)
6
Device Comparison Table
7
Pin Configuration and Functions
Pin Functions
8
Specifications
8.1
Absolute Maximum Ratings
8.2
ESD Ratings
8.3
Recommended Operating Conditions
8.4
Thermal Information
8.5
Electrical Characteristics
8.6
Typical Characteristics
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Battery Voltage Regulation
9.3.2
Battery Current Regulation
9.3.3
Input Adapter Current Regulation
9.3.4
Precharge
9.3.5
Charge Termination, Recharge, and Safety Timer
9.3.6
Power Up
9.3.7
Enable and Disable Charging
9.3.8
System Power Selector
9.3.9
Automatic Internal Soft-Start Charger Current
9.3.10
Converter Operation
9.3.11
Synchronous and Nonsynchronous Operation
9.3.12
Cycle-by-Cycle Charge Undercurrent Protection
9.3.13
Input Overvoltage Protection (ACOV)
9.3.14
Input Undervoltage Lockout (UVLO)
9.3.15
Battery Overvoltage Protection
9.3.16
Cycle-by-Cycle Charge Overcurrent Protection
9.3.17
Thermal Shutdown Protection
9.3.18
Temperature Qualification
9.3.19
Timer Fault Recovery
9.3.20
PG Output
9.3.21
CE (Charge Enable)
9.3.22
Charge Status Outputs
9.3.23
Battery Detection
9.4
Device Functional Modes
10
Application and Implementation
10.1
Application Information
10.2
Typical Applications
10.2.1
System with Power Path
10.2.1.1
Design Requirements
10.2.1.2
Detailed Design Procedure
10.2.1.2.1
Inductor Selection
10.2.1.2.2
Input Capacitor
10.2.1.2.3
Output Capacitor
10.2.1.2.4
Power MOSFETs Selection
10.2.1.2.5
Input Filter Design
10.2.1.2.6
Inductor, Capacitor, and Sense Resistor Selection Guidelines
10.2.1.3
Application Curves
10.2.2
Simplified System without Power Path or DPM
10.2.2.1
Design Requirements
10.2.2.2
Detailed Design Procedure
10.2.2.3
Application Curves
10.2.3
Lead-Acid Charging System
10.2.3.1
Design Requirements
10.2.3.2
Detailed Design Procedure
10.2.3.3
Application Curves
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
Device and Documentation Support
13.1
Device Support
13.1.1
Third-Party Products Disclaimer
13.2
Related Links
13.3
Receiving Notification of Documentation Updates
13.4
Support Resources
13.5
Trademarks
13.6
Electrostatic Discharge Caution
13.7
Glossary
14
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
RGE|24
MPQF124G
Thermal pad, mechanical data (Package|Pins)
RGE|24
QFND008AA
Orderable Information
slus892d_oa
slus892d_pm
1
Features
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 I
q
< 15-µA Off-state battery discharge current
< 1.5-mA Off-state input quiescent current