SLUSCI1B August   2016  – November 2016

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics: Supply Current
    6. 6.6  Electrical Characteristics: Digital Input and Output DC Characteristics
    7. 6.7  Electrical Characteristics: Power-On Reset
    8. 6.8  Electrical Characteristics: LDO Regulator
    9. 6.9  Electrical Characteristics: Internal Temperature Sensor
    10. 6.10 Electrical Characteristics: Low-Frequency Clock Oscillator
    11. 6.11 Electrical Characteristics: High-Frequency Clock Oscillator
    12. 6.12 Electrical Characteristics: Integrating ADC (Coulomb Counter)
    13. 6.13 Electrical Characteristics: ADC (Temperature and Voltage Measurements)
    14. 6.14 Electrical Characteristics: Data Flash Memory
    15. 6.15 Timing Requirements: I2C-Compatible Interface Timing Characteristics
    16. 6.16 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Communications
        1. 7.3.1.1 I2C Interface
        2. 7.3.1.2 I2C Time Out
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 BAT Voltage Sense Input
        2. 8.2.2.2 SRP and SRN Current Sense Inputs
        3. 8.2.2.3 Sense Resistor Selection
        4. 8.2.2.4 TS Temperature Sense Input
        5. 8.2.2.5 Thermistor Selection
        6. 8.2.2.6 REGIN Power Supply Input Filtering
        7. 8.2.2.7 REG25 LDO Output Filtering
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Power Supply Decoupling Capacitor
      2. 10.1.2 Capacitors
      3. 10.1.3 Communication Line Protection Components
    2. 10.2 Layout Example
      1. 10.2.1 Ground System
      2. 10.2.2 Kelvin Connections
      3. 10.2.3 Board Offset Considerations
      4. 10.2.4 ESD Spark Gap
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5 Pin Configuration and Functions

14-Pin TSSOP (PW)
Top View

Pin Functions

PIN TYPE DESCRIPTION
NAME NUMBER
VEN/GPIO 1 O(1) Active High Voltage Translation Enable. This signal is used optionally to switch the input voltage divider on/off to reduce the power consumption (typ 45 μA) of the divider network. It can also be used as a general purpose output.
ALERT1 2 O Open drain output for use as system alert or charger control. Pull-up voltage limited
LEN 3 O Push-pull external voltage divider control output
BAT 4 P Voltage measurement input
CE 5 I Chip enable. Internal LDO is powered down when driven low.
REGIN 6 P Internal integrated LDO input. Decouple with 0.1-µF ceramic capacitor to VSS.
REG25 7 P 2.5-V output voltage of the internal integrated LDO. Decouple with 1-µF ceramic capacitor to VSS.
VSS 8 P Device ground
SRP 9 I Analog input pin connected to the internal coulomb-counter peripheral for integrating a small voltage between SRP and SRN, where SRP is nearest the BAT– connection.
SRN 10 I Analog input pin connected to the internal coulomb-counter peripheral for integrating a small voltage between SRP and SRN, where SRN is nearest the PACK– connection.
TS 11 I Pack thermistor voltage sense (use 103AT-type thermistor)
ALERT2 12 O Open drain output for use as system alert or charger control
SCL 13 I Open drain slave I2C serial communication clock input. Use with an external 10-kΩ pull-up resistor (typical).
SDA 14 I/O Open drain slave I2C serial communication data line. Use with an external 10-kΩ pull-up resistor (typical).
(1) AI = Analog Input, O = Output, I = Input, P = Power, I/O = Input/Output