ZHCSM58B January 2020 – November 2021 BQ76952
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 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 BQ76952
- 7.5 Supply Current
- 7.6 Digital I/O
- 7.7 LD Pin
- 7.8 Precharge (PCHG) and Predischarge (PDSG) FET Drive
- 7.9 FUSE Pin Functionality
- 7.10 REG18 LDO
- 7.11 REG0 Pre-regulator
- 7.12 REG1 LDO
- 7.13 REG2 LDO
- 7.14 Voltage References
- 7.15 Coulomb Counter
- 7.16 Coulomb Counter Digital Filter (CC1)
- 7.17 Current Measurement Digital Filter (CC2)
- 7.18 Current Wake Detector
- 7.19 Analog-to-Digital Converter
- 7.20 Cell Balancing
- 7.21 Cell Open Wire Detector
- 7.22 Internal Temperature Sensor
- 7.23 Thermistor Measurement
- 7.24 Internal Oscillators
- 7.25 High-side NFET Drivers
- 7.26 Comparator-Based Protection Subsystem
- 7.27 Timing Requirements - I2C Interface, 100kHz Mode
- 7.28 Timing Requirements - I2C Interface, 400kHz Mode
- 7.29 Timing Requirements - HDQ Interface
- 7.30 Timing Requirements - SPI Interface
- 7.31 Interface Timing Diagrams
- 7.32 Typical Characteristics
- 8 Device Description
- 9 Device Configuration
-
10Measurement Subsystem
- 10.1 Voltage Measurement
- 10.2 General Purpose ADCIN Functionality
- 10.3 Coulomb Counter and Digital Filters
- 10.4 Synchronized Voltage and Current Measurement
- 10.5 Internal Temperature Measurement
- 10.6 Thermistor Temperature Measurement
- 10.7 Factory Trim of Voltage ADC
- 10.8 Voltage Calibration (ADC Measurements)
- 10.9 Voltage Calibration (COV and CUV Protections)
- 10.10 Current Calibration
- 10.11 Temperature Calibration
- 11Primary and Secondary Protection Subsystems
-
12Device
Hardware Features
- 12.1 Voltage References
- 12.2 ADC Multiplexer
- 12.3 LDOs
- 12.4 Standalone Versus Host Interface
- 12.5 Multifunction Pin Controls
- 12.6 RST_SHUT Pin Operation
- 12.7 CFETOFF, DFETOFF, and BOTHOFF Pin Functionality
- 12.8 ALERT Pin Operation
- 12.9 DDSG and DCHG Pin Operation
- 12.10 Fuse Drive
- 12.11 Cell Open Wire
- 12.12 Low Frequency Oscillator
- 12.13 High Frequency Oscillator
- 13Device Functional Modes
- 14Serial Communications Interface
- 15Cell Balancing
- 16Application and Implementation
- 17Power Supply Requirements
- 18Layout
- 19Device and Documentation Support
- 20Mechanical, Packaging, Orderable Information
7.32 Typical Characteristics
Figure 7-4 Cell
Voltage Measurement Error at 25°C Across Input Range
Figure 7-6 Cell
Voltage Measurement Error vs. Temperature with Cell Voltage = 2.5 V
Figure 7-8 Cell
Voltage Measurement Error vs. Temperature with Cell Voltage = 4.5 VError in
measurement of differential voltage between SRP and SRN pins
Figure 7-10 Current Measurement Error vs. TemperatureFigure 7-12 Internal Temperature Sensor (Delta VBE) Voltage vs.
Temperature
Figure 7-14 High Frequency Oscillator (HFO) Accuracy vs. Temperature
Figure 7-16 Overcurrent in Charge Protection (OCC) Threshold vs. Temperature
Figure 7-18 Cell
Balancing Resistance vs. Cell Common-Mode Voltage at 25°C
Figure 7-20 REG2
Voltage vs. Load at 25°CFigure 7-22 Thermistor Pullup Resistance vs. Temperature (180-kΩ Setting)
Figure 7-24 LD
Wake Voltage vs. Temperature
Figure 7-26 REG18
Voltage vs. Temperature, Across BAT Levels
Figure 7-28 BAT
Current in NORMAL Mode vs. Temperature
Figure 7-30 BAT
Current in SLEEP2 (SRC Follower) Mode vs. Temperature
Figure 7-5 Cell
Voltage Measurement Error vs. Temperature with Cell Voltage = 1.5 VFigure 7-7 Cell
Voltage Measurement Error vs. Temperature with Cell Voltage = 3.5 V
Figure 7-9 Cell
Voltage Measurement Error vs. Temperature with Cell Voltage = 5.5 V
Error in measurement of
differential voltage between SRP and SRN pins
Figure 7-11 Internal Voltage References vs. Temperature (VREF1 and VREF2)LFO
measured in FULL SPEED mode (262 kHz)
Figure 7-13 Low
Frequency Oscillator (LFO) Accuracy vs. Temperature
Figure 7-15 Overcurrent in Discharge Protection 1 (OCD1) Threshold vs.
Temperature
Figure 7-17 Cell
Balancing Resistance vs. TemperatureFigure 7-19 REG1
Voltage vs. Load at 25°C
Figure 7-21 Thermistor Pullup Resistance vs. Temperature (18-kΩ Setting)
Error calculated as percentage
of nominal gain across ±200-mV input range
Figure 7-23 Coulomb Counter Gain Error vs. Temperature
Figure 7-25 REG18
Voltage vs. Temperature, with No LoadMeasurements taken using
external BJT
Figure 7-27 REGIN
Voltage vs. BAT Voltage
Figure 7-29 BAT
Current in SHUTDOWN Mode vs. TemperatureFigure 7-31 BAT
Current in DEEPSLEEP2 (No LFO) Mode vs. Temperature