SLUSAJ3K September   2011  – August 2022 BQ294502 , BQ294504 , BQ294506 , BQ294512 , BQ294522 , BQ294524 , BQ294532 , BQ294533 , BQ294534 , BQ294582 , BQ294592

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 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 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 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. 8.3.4 Thermal Pad, PWRPAD
    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. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
    3. 9.3 System 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 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Related Documentation
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Support Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

7.5 Electrical Characteristics

Typical values stated where TA = 25°C and VDD = 10.8 V, MIN/MAX values stated where TA = –40°C to +110°C and VDD = 3 V to 15 V (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VOLTAGE PROTECTION THRESHOLD VCx
VOV V(PROTECT) – Overvoltage Detection BQ294502, fixed delay 4 s 4.35 V
BQ294504, fixed delay 6.5 s 4.35
BQ294506, fixed delay 4 s 4.38
BQ294512, fixed delay 4 s 4.4
BQ294522, fixed delay 4 s 4.45
BQ294524, fixed delay 6.5 s 4.45
BQ294532, fixed delay 4 s 4.5
BQ294533, fixed delay 6.5 s 4.5
BQ294534, fixed delay 4 s 4.55
BQ294582, fixed delay 4 s 4.225
BQ294592, fixed delay 4 s 4.3
VHYS Overvoltage Detection Hysteresis VHYS 250 300 400 mV
VOA OV Detection Accuracy TA = 25°C, BQ2945xy –10 10 mV
TA = 25°C, BQ294506 only –7 7 mV
VOA –DRIFT OV Detection Accuracy due to Temperature TA = –40°C
TA = 0°C
TA = 60°C
TA = 110°C		 –40
–20
–24
–54		 44
20
24
54		 mV
TA = 10°C to 45°C, BQ294506 only –15 15 mV
SUPPLY AND LEAKAGE CURRENT
ICC Supply Current (V3–V2) = (V2–V1) = (V1–VSS) = 4 V (See Figure 8-3 for reference.) 1 2 µA
(V3–V2) = (V2–V1) = (V1–VSS) = 2.8 V with TA = –40°C to 60°C 1.25
IIN Input Current at Vx Pins Measured at V3, V2, and V1 = 4 V
(V2–V1) = (V1–VSS) = 4 V
TA = 0°C to 60°C (See Figure 8-3 for reference.)		 –0.1 0.1 µA
OUTPUT DRIVE OUT
VOUT Output Drive Voltage (V3–V2) or (V2–V1) or (V1–VSS) > VOV
VDD = 7.2 V, IOH = 100 µA, TA = –40°C to +110°C
 6 V
Two of the three cells are short circuit and only one cell is powered
(V3–V2) or (V2–V1) or (V1–VSS) > VOV
VDD = Vx (Cell voltage), IOH = 100 µA, TA = –40°C to +110°C		 VDD – 0.2 V
(V3–V2), (V2–V1), and (V1–VSS) < VOV, IOL = 100 µA, TA = 25°C
TA = –40°C to +110°C
250

400		 mV
IOUT(Short) OUT Short Circuit Current OUT = 0 V (V3–V2) or (V2–V1) or (V1–VSS) > VOV 4.5 mA
tR Output Rise Time CL = 1 nF, VOH(OUT) = 0 V to 5 V(1) 5 µs
ZO Output Impedance 2 5 kΩ
FIXED DELAY TIMER
tDELAY Fault Detection Delay Time Fixed Delay, BQ2945xy with delay set to 4s typ 3.2 4 4.8 s
Fixed Delay, BQ2945xy with delay set to 6.5 s 5.2 6.5 7.8
tDELAY_CTM Fault Detection Delay Time in Test Mode Fixed Delay (Internal settings) 15 ms
(1) Specified by design. It is not 100% tested in production.