Texas Instruments BQ76952 Manuals

Manuals and User Guides for Texas Instruments BQ76952. We have 1 Texas Instruments BQ76952 manual available for free PDF download: Manual

Texas Instruments BQ76952 Manual (87 pages)

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

Brand: Texas Instruments | Category: Battery Pack | Size: 4.09 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 Bq76952
  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)
  16
- 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
  20
- Comparator-Based Protection Subsystem
  21
- Timing Requirements - I
  22
- Interface, 100Khz
  22
- Mode
  22
- Timing Requirements - I C Interface, 400Khz Mode
  23
- Timing Requirements - HDQ Interface
  23
- Timing Requirements - SPI Interface
  24
- Interface Timing Diagrams
  25
- Typical Characteristics
  27
8 Device Description

33
- Overview
  33
- Functional Block Diagram
  34
- BQ76952 Device Versions
  34
- Diagnostics
  34
9 Device Configuration

35
- Commands and Subcommands
  35
- Configuration Using OTP or Registers
  35
- Device Security
  35
- Scratchpad Memory
  35
10 Measurement Subsystem

36
11 Primary and Secondary Protection Subsystems

42
- Protections Overview
  42
- Primary Protections
  42
- Secondary Protections
  43
- High-Side NFET Drivers
  44
- Protection Fets Configuration and Control
  45
- Load Detect Functionality
  45
12 Device Hardware Features

46
- Voltage References
  46
- ADC Multiplexer
  46
- Ldos
  46
- Standalone Versus Host Interface
  47
- Multifunction Pin Controls
  47
- RST_SHUT Pin Operation
  48
- CFETOFF, DFETOFF, and BOTHOFF Pin Functionality
  48
- ALERT Pin Operation
  48
- DDSG and DCHG Pin Operation
  49
- Fuse Drive
  49
- Cell Open Wire
  50
- Low Frequency Oscillator
  50
- High Frequency Oscillator
  50
13 Device Functional Modes

51
- Overview
  51
- NORMAL Mode
  51
- SLEEP Mode
  52
- DEEPSLEEP Mode
  52
- SHUTDOWN Mode
  53
- CONFIG_UPDATE Mode
  54
14 Serial Communications

54
- Serial Communications Overview
  54
- I 2 C Communications
  54
- Interface
  54
- SPI Communications
  56
- HDQ Communications
  62
15 Cell Balancing

63
- Cell Balancing Overview
  63
16 Application and Implementation

64
- Application Information
  64
- Typical Applications
  64
- Random Cell Connection Support
  70
- Startup Timing
  71
- FET Driver Turn-Off
  72
- Unused Pins
  74
17 Power Supply Requirements

75
18 Layout

75
- Layout Guidelines
  75
- Layout Example
  76
- Documentation Support
  79
- Support Resources
  79
- Trademarks
  79
- Electrostatic Discharge Caution
  79
19 Support

79

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Texas Instruments BQ76952 Manuals

Texas Instruments BQ76952 Manual (87 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 Support

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