SLUSA78C
July 2010 – July 2015
PRODUCTION DATA.
1
Features
2
Applications
3
Description
4
Revision History
5
Device Comparison Table
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Timing Requirements
7.7
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Automatic Internal Soft-Start Charger Current
8.3.2
High-Accuracy Current-Sense Amplifier
8.3.3
Charge Timeout
8.3.4
Input Overcurrent Protection (ACOC)
8.3.5
Charge Overcurrent Protection (CHGOCP)
8.3.6
Battery Overvoltage Protection (BATOVP)
8.3.7
Battery Shorted to Ground (BATLOWV)
8.3.8
Thermal Shutdown Protection (TSHUT)
8.4
Device Functional Modes
8.4.1
Enable and Disable Charging
8.4.2
Continuous Conduction Mode (CCM)
8.4.3
Discontinuous Conduction Mode (DCM)
8.5
Programming
8.5.1
SMBus Interface
8.5.2
Battery-Charger Commands
8.5.3
Setting Charger Options
8.5.4
Setting the Charge Current
8.5.5
Setting the Charge Voltage
8.5.6
Setting Input Current
8.5.7
Adapter Detect and ACOK Output
8.5.8
Converter Operation
8.5.9
EMI Switching Frequency Adjust
8.5.10
Inductor Short, MOSFET Short Protection
8.5.11
Independent Comparator
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Negative Output Voltage Protection
9.2.2.2
Inductor Selection
9.2.2.3
Input Capacitor
9.2.2.4
Output Capacitor
9.2.2.5
Power MOSFETs Selection
9.2.2.6
Input Filter Design
9.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.1.1
IC Design Guideline
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.1.1
Third-Party Products Disclaimer
12.2
Documentation Support
12.2.1
Related Documentation
12.3
Related Links
12.4
Community Resources
12.5
Trademarks
12.6
Electrostatic Discharge Caution
12.7
Glossary
13
Mechanical, Packaging, and Orderable Information
パッケージ・オプション
メカニカル・データ(パッケージ|ピン)
RGR|20
MPQF239A
サーマルパッド・メカニカル・データ
RGR|20
QFND242E
発注情報
slusa78c_oa
slusa78c_pm
5 Device Comparison Table
CONDITION
bq24707
bq24707A
ACOK
default delay
1.3 s
1.2 ms
Suggest fully charged battery ChargeVoltage() setting
after termination
Full scale charge voltage(12.592 V for 3-S battery)
0 V
Suggest fully charged battery ChargeCurrent() setting
after termination
0 A
0 A