SLUSD08A May   2017  – January 2018

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Simplified Schematic
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
    1.     Pin Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Timing Requirements
    7. 8.7 Typical Characteristics
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1  Ship Mode
        1. 9.3.1.1 Ship Mode Entry and Exit
      2. 9.3.2  High Impedance Mode
      3. 9.3.3  Active Battery Only Connected
      4. 9.3.4  Voltage Based Battery Monitor
      5. 9.3.5  Sleep Mode
      6. 9.3.6  Input Voltage Based Dynamic Power Management (VIN(DPM))
      7. 9.3.7  Input Overvoltage Protection and Undervoltage Status Indication
      8. 9.3.8  Battery Charging Process and Charge Profile
      9. 9.3.9  Dynamic Power Path Management Mode
      10. 9.3.10 Battery Supplement Mode
      11. 9.3.11 Default Mode
      12. 9.3.12 Termination and Pre-Charge Current Programming by External Components (IPRETERM)
      13. 9.3.13 Input Current Limit Programming by External Components (ILIM)
      14. 9.3.14 Charge Current Programming by External Components (ISET)
      15. 9.3.15 Safety Timer and Watchdog Timer
      16. 9.3.16 External NTC Monitoring (TS)
      17. 9.3.17 Thermal Protection
      18. 9.3.18 Typical Application Power Dissipation
      19. 9.3.19 Status Indicators (PG and INT)
      20. 9.3.20 Chip Disable (CD)
      21. 9.3.21 Buck (PWM) Output
      22. 9.3.22 Load Switch / LDO Output and Control
      23. 9.3.23 Manual Reset Timer and Reset Output (MR and RESET)
    4. 9.4 Device Functional Modes
    5. 9.5 Programming
      1. 9.5.1 Serial Interface Description
      2. 9.5.2 F/S Mode Protocol
    6. 9.6 Register Maps
      1. 9.6.1  Status and Ship Mode Control Register
        1. Table 12. Status and Ship Mode Control Register
      2. 9.6.2  Faults and Faults Mask Register
        1. Table 13. Faults and Faults Mask Register
      3. 9.6.3  TS Control and Faults Masks Register
        1. Table 14. TS Control and Faults Masks Register, Memory Location 0010
      4. 9.6.4  Fast Charge Control Register
        1. Table 15. Fast Charge Control Register
      5. 9.6.5  Termination/Pre-Charge and I2C Address Register
        1. Table 16. Termination/Pre-Charge and I2C Address Register
      6. 9.6.6  Battery Voltage Control Register
        1. Table 17. Battery Voltage Control Register
      7. 9.6.7  SYS VOUT Control Register
        1. Table 18. SYS VOUT Control Register
      8. 9.6.8  Load Switch and LDO Control Register
        1. Table 20. Load Switch and LDO Control Register
      9. 9.6.9  Push-button Control Register
        1. Table 21. Push-button Control Register
      10. 9.6.10 ILIM and Battery UVLO Control Register
        1. Table 22. ILIM and Battery UVLO Control Register, Memory Location 1001
      11. 9.6.11 Voltage Based Battery Monitor Register
        1. Table 23. Voltage Based Battery Monitor Register, Memory Location 1010
      12. 9.6.12 VIN_DPM and Timers Register
        1. Table 24. VIN_DPM and Timers Register
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Default Settings
        2. 10.2.2.2 Choose the Correct Inductance and Capacitance
        3. 10.2.2.3 Calculations
          1. 10.2.2.3.1 Program the Fast Charge Current (ISET)
          2. 10.2.2.3.2 Program the Input Current Limit (ILIM)
          3. 10.2.2.3.3 Program the Pre-charge/termination Threshold (IPRETERM)
          4. 10.2.2.3.4 TS Resistors (TS)
      3. 10.2.3 Application Performance Curves
        1. 10.2.3.1 Charger Curves
        2. 10.2.3.2 SYS Output Curves
        3. 10.2.3.3 Load Switch and LDO Curves
        4. 10.2.3.4 LS/LDO Output Curves
        5. 10.2.3.5 Timing Waveforms Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Third-Party Products Disclaimer
    2. 13.2 Trademarks
    3. 13.3 Electrostatic Discharge Caution
    4. 13.4 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

9.6.7 SYS VOUT Control Register

Memory location 0x06h, Reset State: 1010 1010 (BQ25120A)

Figure 31. SYS VOUT Control Register
7 (MSB) 6 5 4 3 2 1 0 (LSB)
1 0 1 0 1 0 1 0
R/W R/W R/W R/W R/W R/W R/W R/W
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset

Table 18. SYS VOUT Control Register

BitFieldTypeResetDescription
B7 (MSB) EN_SYS_OUT R/W 1 0 – Disable SW
1 – Enable SW
(When disabled, output is pulled low)
B6 SYS_SEL1 R/W 0 00 – 1.1 V and 1.2 V selection
01 – 1.3 V through 2.8 V selection
10 – 1.5V through 2.75 V selection
11 – 1.8 V through 3.3 V selection
B5 SYS_SEL0 R/W 1
B4 SYS_VOUT_3 R/W 0 OUT Voltage: 800 mV step if SYS_SEL is 01 or 11
B3 SYS_VOUT_2 R/W 1 OUT Voltage: 400 mV step if SYS_SEL is 01 or 11
B2 SYS_VOUT_1 R/W 0 OUT Voltage: 200 mV step if SYS_SEL is 01 or 11
B1 SYS_VOUT_0 R/W 1 OUT Voltage: 100 mV step if SYS_SEL is 01 or 11
B0 (LSB) 0
SW_VOUT Bits: Use SYS_SEL and SYS_VOUT bits to set the output on SYS. The SYS voltage is calculated using the following equation:
See table below for all VOUT values that can be programmed through SYS_SEL and SYS_VOUT.
If SYS_SEL = 01, then SYS = 1.30 V + SYS_VOUTCODE x 100 mV.
If SYS_SEL = 11, then SYS = 1.80 V + SYS_VOUTCODE x 100 mV.

Table 19. SYS_SEL Codes

SYS_SEL SYS_VOUT TYPUNIT
00 0000 1.1 V
00 0001 1.2 V
00 0010 1.25 V
00 0011 1.333 V
00 0100 1.417 V
00 0101 1.5 V
00 0110 1.583 V
00 0111 1.667 V
00 1000 1.75 V
00 1001 1.833 V
00 1010 1.917 V
00 1011 2 V
00 1100 2.083 V
00 1101 2.167 V
00 1110 2.25 V
00 1111 2.333 V
01 0000 1.3 V
01 0001 1.4 V
01 0010 1.5 V
01 0011 1.6 V
01 0100 1.7 V
01 0101 1.8 V
01 0110 1.9 V
01 0111 2 V
01 1000 2.1 V
01 1001 2.2 V
01 1010 2.3 V
01 1011 2.4 V
01 1100 2.5 V
01 1101 2.6 V
01 1110 2.7 V
01 1111 2.8 V
10 0000 1.5 V
10 0001 1.583 V
10 0010 1.667 V
10 0011 1.75 V
10 0100 1.833 V
10 0101 1.917 V
10 0110 2 V
10 0111 2.083 V
10 1000 2.167 V
10 1001 2.25 V
10 1010 2.333 V
10 1011 2.417 V
10 1100 2.5 V
10 1101 2.583 V
10 1110 2.667 V
10 1111 2.75 V
11 0000 1.8 V
11 0001 1.9 V
11 0010 2 V
11 0011 2.1 V
11 0100 2.2 V
11 0101 2.3 V
11 0110 2.4 V
11 0111 2.5 V
11 1000 2.6 V
11 1001 2.7 V
11 1010 2.8 V
11 1011 2.9 V
11 1100 3 V
11 1101 3.1 V
11 1110 3.2 V
11 1111 3.3 V