SLUSFF9 November 2023 BQ27Z558
PRODUCTION DATA
- 1
- 1 Features
- 2 Applications
- 3 Description
- 4 Description (continued)
- 5 Pin Configuration and Functions
-
6 Specifications
- 6.1 Absolute Maximum Ratings
- 6.2 ESD Ratings
- 6.3 Recommended Operating Conditions
- 6.4 Thermal Information
- 6.5 Supply Current
- 6.6 Internal 1.8-V LDO (REG18)
- 6.7 I/O (PULS, INT)
- 6.8 Chip Enable (CE)
- 6.9 Internal Temperature Sensor
- 6.10 NTC Thermistor Measurement Support
- 6.11 Coulomb Counter (CC)
- 6.12 Analog Digital Converter (ADC)
- 6.13 Internal Oscillator Specifications
- 6.14 Voltage Reference1 (REF1)
- 6.15 Voltage Reference2 (REF2)
- 6.16 Flash Memory
- 6.17 I2C I/O
- 6.18 I2C Timing — 100 kHz
- 6.19 I2C Timing — 400 kHz
- 6.20 HDQ Timing
- 6.21 Typical Characteristics
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3
Feature Description
- 7.3.1 BQ27Z558 Processor
- 7.3.2 Battery Parameter Measurements
- 7.3.3 Power Supply Control
- 7.3.4 Bus Communication Interface
- 7.3.5 Low Frequency Oscillator
- 7.3.6 High Frequency Oscillator
- 7.3.7 1.8-V Low Dropout Regulator
- 7.3.8 Internal Voltage References
- 7.3.9 Gas Gauging
- 7.3.10 Charge Control Features
- 7.3.11 Authentication
- 7.4 Device Functional Modes
- 8 Applications and Implementation
- 9 Device and Documentation Support
- 10Revision History
- 11Mechanical, Packaging, and Orderable Information
5 Pin Configuration and Functions
Figure 5-1 Pin DiagramTable 5-1 Pin Functions
| PIN | TYPE(1) | DESCRIPTION | |
|---|---|---|---|
| NAME | NO. | ||
| BAT | D2 | P | Battery voltage measurement input. Kelvin battery sense connection to BAT_SNS. Connect a capacitor (1 μF) between BAT and VSS. Place the capacitor close to the gauge. |
| CE | D3 | I | Active-high chip enable |
| BAT_SNS | C2 | AI | Battery sense |
| INT | A1 | O | Interrupt for voltage, temperature, and state of charge (programmable active high or low) |
| PULS | A2 | O | Programmable pulse width with active-high or -low option |
| TS | B1 | AI | Temperature input for ADC |
| NU | C3 | NC | Makes no external connection |
| SCL | B3 | I/O | Serial clock for I2C interface that requires an external pullup when used. It can be left floating if unused. |
| SDA/HDQ | A3 | I/O | Serial data for I2C interface and one-wire interface for HDQ (selectable) that requires an external pullup when used. It can be left floating if unused. |
| SRP | D1 | I | Analog input pin connected to the internal coulomb counter peripheral for integrating a small voltage between SRP (positive side) and SRN |
| SRN | C1 | I | Analog input pin connected to the internal coulomb counter peripheral for integrating a small voltage between SRP (positive side) and SRN |
| VSS | B2 | P | Device ground |
(1) P = Power Connection, O = Digital Output, AI = Analog Input, I
= Digital Input, I/O = Digital Input/Output, NU = Not Used