SLUSAS0F December   2011  – July 2025 BQ2946

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Options
  6. 5 Pin Configuration and Functions
  7. 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
    6. 6.6 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Sense Positive Input for V1
      2. 7.3.2 Output Drive, OUT
      3. 7.3.3 Supply Input, VDD
      4. 7.3.4 Thermal Pad, PWRPAD
    4. 7.4 Device Functional Modes
      1. 7.4.1 NORMAL Mode
      2. 7.4.2 OVERVOLTAGE Mode
      3. 7.4.3 Customer Test Mode
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Application Configuration
      2. 8.1.2 29
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 System Example
  10. 9 Power Supply Recommendations
  11. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  12. 11Device and Documentation Support
    1. 11.1 Third-Party Products Disclaimer
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  13. 12Revision History
  14. 13Mechanical, Packaging, and Orderable Information

Package Options

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

6.5 Electrical Characteristics

Typical values stated where TA = 25°C and VDD = 4V, MIN/MAX values stated where TA = –40°C to +110°C and VDD = 4V (unless otherwise noted)
TEST NO.PARAMETERTEST CONDITIONSMINTYPMAXUNIT
VOLTAGE PROTECTION THRESHOLD VCx
VOV V(PROTECT) – Overvoltage Detection BQ294601, fixed delay 4s, V1 > VOV 4.275 V
1.0 BQ294602, fixed delay 4s, V1 > VOV 4.35
1.1BQ294604, fixed delay 6.5s, V1 > VOV4.35
1.2BQ294622, fixed delay 4s, V1 > VOV(2)4.45
1.3BQ294624, fixed delay 6.5s, V1 > VOV4.45
1.4BQ294682, fixed delay 4s, V1 > VOV4.225
1.5BQ294684, fixed delay 6.5s, V1 > VOV (2)4.225
1.6VHYSOvervoltage Detection Hysteresis250300400V
1.7VOAOV Detection AccuracyTA = 25°C–1010mV
1.8VOA –DRIFTOV Detection Accuracy due to TemperatureTA = –40°C
TA = 0°C
TA = 60°C
TA = 110°C		–40
–20
–24
–54		44
20
24
54		mV
SUPPLY AND LEAKAGE CURRENT
1.9ICCSupply Current(V1–VSS) = 4.0 V (see Figure 7-3 for reference)12µA
(V1–VSS) = 2.8V with TA = –40°C to +60°C1.25
1.10IINInput Current at V1 PinsMeasured at V1 = 4.0V
(V1–VSS) = 4.0V
TA = 0°C to 60°C (see Figure 7-3 for reference)		–0.10.1µA
OUTPUT DRIVE OUT
1.11VOUTOutput Drive Voltage(V1–VSS) > VOV
VDD = V1, IOH = 100µA, TA = –40°C to +110°C
3VDD – 0.3V
1.12
1.13(V1–VSS) < VOV, IOL = 100µA, TA = 25°C
TA = –40°C to +110°C
250


400		mV
1.14IOUT(Short)OUT Short Circuit CurrentOUT = 0V, (V1–VSS) > VOV1.53mA
1.15tROutput Rise TimeCL = 1nF, VOH(OUT) = 0V to 5V(1)5µs
1.16ZOOutput Impedance25kΩ
FIXED DELAY TIMER
1.17tDELAYFault Detection Delay TimeFixed Delay, BQ2946x2, BQ2946013.244.8s
Fixed Delay, BQ2946x45.26.57.8
1.18tDELAY_CTMFault Detection Delay Time in Test ModeFixed Delay (Internal settings)15ms
(1) Specified by design. Not 100% tested in production.
(2) Product Preview only.