Texas Instruments BQ769142 Manuals

Manuals and User Guides for Texas Instruments BQ769142. We have 1 Texas Instruments BQ769142 manual available for free PDF download: Manual

Texas Instruments BQ769142 Manual (80 pages)

High Accuracy Battery Monitor and Protector for LiIon, Li-Polymer, and LiFePO4 Battery Packs

Brand: Texas Instruments | Category: Microcontrollers | Size: 3.43 MB

1 Features

1
2 Applications

1
3 Description

1
- Table of Contents
  2
4 Revision History

3
5 Device Comparison Table

4
6 Pin Configuration and Functions

4
7 Specifications

7
- Absolute Maximum Ratings
  7
- ESD Ratings
  8
- Recommended Operating Conditions
  9
- Thermal Information Bq769142
  10
- Supply Current
  10
- Digital I/O
  11
- LD Pin
  12
- Precharge (PCHG) and Predischarge (PDSG) FET Drive
  12
- FUSE Pin Functionality
  12
- Reg18 Ldo
  12
- REG0 Pre-Regulator
  13
- Reg1 Ldo
  13
- Reg2 Ldo
  14
- Voltage References
  14
- Coulomb Counter
  15
- Coulomb Counter Digital Filter (CC1)
  15
- Current Measurement Digital Filter (CC2)
  15
- Current Wake Detector
  16
- Analog-To-Digital Converter
  16
- Cell Balancing
  18
- Cell Open Wire Detector
  18
- Internal Temperature Sensor
  18
- Thermistor Measurement
  18
- Internal Oscillators
  19
- High-Side NFET Drivers
  19
- Comparator-Based Protection Subsystem
  20
- Interface, 100Khz
  22
  - Mode
    22
  - Timing Requirements - I
    22
- Interface, 400Khz
  22
8 Device Description

31
- Overview
  31
- BQ769142 Device Versions
  31
- Functional Block Diagram
  32
- Diagnostics
  32
9 Device Configuration

33
- Commands and Subcommands
  33
- Configuration Using OTP or Registers
  33
- Device Security
  33
- Scratchpad Memory
  33
10 Measurement Subsystem

34
11 Primary and Secondary Protection Subsystems

40
- Protections Overview
  40
- Primary Protections
  40
- Secondary Protections
  41
- High-Side NFET Drivers
  42
- Protection Fets Configuration and Control
  43
- Load Detect Functionality
  43
12 Device Hardware Features

44
- Voltage References
  44
- ADC Multiplexer
  44
- Ldos
  44
- Standalone Versus Host Interface
  45
- Multifunction Pin Controls
  45
- RST_SHUT Pin Operation
  46
- CFETOFF, DFETOFF, and BOTHOFF Pin Functionality
  46
- ALERT Pin Operation
  46
- DDSG and DCHG Pin Operation
  47
- Fuse Drive
  47
- Cell Open Wire
  48
- Low Frequency Oscillator
  48
- High Frequency Oscillator
  48
13 Device Functional Modes

48
- Overview
  48
- NORMAL Mode
  49
- SLEEP Mode
  49
- DEEPSLEEP Mode
  50
- SHUTDOWN Mode
  50
- CONFIG_UPDATE Mode
  51
14 Serial Communications

51
- Serial Communications Overview
  51
- Interface
  51
- I 2 C Communications
  52
- SPI Communications
  53
- HDQ Communications
  59
15 Cell Balancing

60
- Cell Balancing Overview
  60
16 Application and Implementation

61
- Application Information
  61
- Typical Applications
  61
- Random Cell Connection Support
  67
- Startup Timing
  68
- FET Driver Turn-Off
  69
- Unused Pins
  71
17 Power Supply Requirements

72
18 Layout

72
- Layout Guidelines
  72
- Layout Example
  73
19 Device and Documentation

76
- Third-Party Products Disclaimer
  76
- Documentation Support
  76
- Support Resources
  76
- Trademarks
  76
- Support
  76

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Texas Instruments BQ769142 Manuals

Texas Instruments BQ769142 Manual (80 pages)

Table of Contents

1 Features

2 Applications

3 Description

4 Revision History

5 Device Comparison Table

6 Pin Configuration and Functions

7 Specifications

8 Device Description

9 Device Configuration

10 Measurement Subsystem

11 Primary and Secondary Protection Subsystems

12 Device Hardware Features

13 Device Functional Modes

14 Serial Communications

15 Cell Balancing

16 Application and Implementation

17 Power Supply Requirements

18 Layout

19 Device and Documentation

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