SLUSAX1H December   2012  – April 2020 BQ7718

UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
    1.     Device Images
      1.      Simplified Schematic
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
    1.     Pin Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 DC Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Sense Positive Input for Vx
      2. 8.3.2 Output Drive, OUT
      3. 8.3.3 Supply Input, VDD
    4. 8.4 Device Functional Modes
      1. 8.4.1 NORMAL Mode
      2. 8.4.2 OVERVOLTAGE Mode
      3. 8.4.3 Customer Test Mode
  9. Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Design Requirements
      2. 9.1.2 Detailed Design Procedure
        1. 9.1.2.1 Application Curves
    2. 9.2 Systems Examples
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Related Links
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

DC Characteristics

Typical values stated where TA = 25°C and VDD = 18 V, MIN/MAX values stated where TA = –40°C to 110°C and VDD = 3V to 25 V (unless otherwise noted).
SYMBOL PARAMETER CONDITION MIN TYP MAX UNIT
Voltage Protection Threshold VCx
VOV V(PROTECT) Overvoltage Detection BQ771800 4.300 V
BQ771801 4.275 V
BQ771803 4.275 V
BQ771802 4.225 V
BQ771806 4.350 V
BQ771807 4.450 V
BQ771808 4.200 V
BQ771809 4.200 V
BQ771811 4.225 V
BQ771815 4.225 V
BQ771817 4.275 V
BQ771818 4.300 V
VHYS OV Detection Hysteresis BQ771800 250 300 400 mV
BQ771801 0 50 100 mV
BQ771802 250 300 400 mV
BQ771803 0 50 100 mV
BQ771806 250 300 400 mV
BQ771807 250 300 400 mV
BQ771808 0 50 100 mV
BQ771809 0 50 100 mV
BQ771811 0 50 100 mV
BQ771815 0 50 100 mV
BQ771817 0 50 100 mV
BQ771818 250 300 400 mV
VOA OV Detection Accuracy TA = 25°C –10 10 mV
VOADRIFT OV Detection Accuracy Across Temperature TA = –40°C –40 44 mV
TA = 0°C –20 20 mV
TA = 60°C –24 24 mV
TA = 110°C –54 54 mV
Supply and Leakage Current
ICC Supply Current (V5–V4) = (V4–V3) = (V3–V2) = (V2–V1) = (V1–VSS) = 4 V (See Figure 8.) 1 2 µA
IIN Input Current at Vx Pins (V5–V4) = (V4–V3) = (V3–V2) = (V2–V1) = (V1–VSS) = 4 V (See Figure 8.) –0.1 0.1 µA
Output Drive OUT, CMOS Active HIGH Versions Only
VOUT1 Output Drive Voltage, Active High (V5–V4), (V4–V3), (V3–V2), (V2–V1), or (V1–VSS) > VOV, VDD = 18 V, IOH = 100µA 6 V
If three of four cells are short circuited and only one cell remains powered and > VOV, VDD = Vx (cell voltage), IOH = 100µA VDD – 0.3 V
(V5–V4), (V4–V3), (V3–V2), (V2–V1), and (V1–VSS) < VOV, VDD = 18 V, IOL = 100 µA measured into pin 250 400 mV
IOUTH1 OUT Source Current (during OV) (V5–V4), (V4–V3), (V3–V2), (V2–V1), or (V1–VSS) > VOV, VDD = 18 V. OUT = 0 V. Measured out of OUT pin 4.5 mA
IOUTL1 OUT Sink Current (no OV) (V5–V4), (V4–V3), (V3–V2), (V2–V1), and (V1–VSS) < VOV, VDD = 18 V, OUT = VDD. Measured into OUT pin 0.5 14 mA
Output Drive OUT, NCH Open Drain Active LOW Versions Only
VOUT2 Output Drive Voltage, Active Low (V5–V4), (V4–V3), (V3–V2), (V2–V1), or (V1–VSS) > VOV, VDD = 18 V, IOL = 100 µA measured into OUT pin 250 400 mV
IOUTH2 OUT Sink Current (during OV) (V5–V4), (V4–V3), (V3–V2), (V2–V1), or (V1–VSS) > VOV, VDD = 18 V. OUT = VDD. Measured into OUT pin 0.5 14 mA
IOUTL2 OUT Source Current (no OV) (V5–V4), (V4–V3), (V3–V2), (V2–V1), and (V1–VSS) < VOV, VDD = 18 V. OUT = VDD. Measured out of OUT pin 100 nA