SLDS238B January   2018  – January  2020 TPS92611-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Typical Application Diagram
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin 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
    6. 6.6 Timing Requirements
    7. 6.7 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 Device Bias
        1. 7.3.1.1 Power-On Reset (POR)
        2. 7.3.1.2 Low-Quiescent-Current Fault Mode
      2. 7.3.2 Constant-Current Driver
      3. 7.3.3 Device Enable
      4. 7.3.4 PWM Dimming
      5. 7.3.5 Diagnostics
        1. 7.3.5.1 DIAGEN
        2. 7.3.5.2 Low-Dropout Mode
        3. 7.3.5.3 Open-Circuit Detection
        4. 7.3.5.4 Short-to-GND Detection
        5. 7.3.5.5 Overtemperature Protection
      6. 7.3.6 Fault-Bus Output With One-Fails–All-Fail
    4. 7.4 Device Functional Modes
      1. 7.4.1 Undervoltage Lockout, V(SUPPLY) < V(POR_rising)
      2. 7.4.2 Normal Operation V(SUPPLY) ≥ 4.5 V
      3. 7.4.3 Low-Voltage Dropout
      4. 7.4.4 Fault Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Single-Channel LED Driver With Diagnostics
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Single-Channel LED Driver With Heat Sharing
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  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

6.7 Typical Characteristics

TPS92611-Q1 D001-IOUT-SUPPLY-SLDS233.gif
Figure 2. Output Current vs Supply Voltage
TPS92611-Q1 D001-IOUT-RES.gif
Figure 3. Output Current vs Current-Sense Resistor
TPS92611-Q1 D002-IOUT-VDROP-SLDS233.gif
TA = 25°C
Figure 4. Output Current vs Dropout Voltage
TPS92611-Q1 D004-IQ-SUPPLY-SLDS233.gif
Figure 6. Shutdown, Quiescent, and Fault Current vs Supply Voltage
TPS92611-Q1 typ-app-pwm-dimming-external-input-slds238.gif
Ch.1 = V(SUPPLY) Ch. 2 = V(PWM) Ch. 3 = I(OUT)
Ch.4 = V(OUT) ƒ(PWM) = 200 Hz Duty-cycle = 50%
Figure 8. PWM Dimming via External Input
TPS92611-Q1 sys-transient-undervoltage-slds238.gif
Ch. 1 = SUPPLY Ch. 2 = V(OUT) Ch. 3 = FAULT
Ch. 4 = I(OUT)
Figure 10. Transient Undervoltage
TPS92611-Q1 sys-jump-start-slds238.gif
Ch. 1 = SUPPLY Ch. 2 = V(OUT) Ch. 3 = FAULT
Ch. 4 = I(OUT)
Figure 12. Jump Start
TPS92611-Q1 sys-superimposed-alternating-voltage-1k-slds238.gif
Ch. 1 = SUPPLY Ch. 2 = V(OUT) Ch. 3 = FAULT
Ch. 4 = I(OUT)
Figure 14. Superimposed Alternating Voltage, 1-kHz
TPS92611-Q1 sys-slow-decrease-and-increase-slds238.gif
Ch. 1 = SUPPLY Ch. 2 = V(OUT) Ch. 3 = FAULT
Ch. 4 = I(OUT)
Figure 16. Slow Decrease and Slow Increase of Supply Voltage
TPS92611-Q1 typ-app-led-short-slds238.gif
Ch. 1 = V(OUT) Ch. 2 = FAULT Ch. 3 = I(OUT)
Figure 18. LED Short-Circuit Protection and Recovery
TPS92611-Q1 D003-VDROP-TEMP-SLDS233.gif
I(OUT) setting = 150 mA
Figure 5. Output Current vs Dropout Voltage
TPS92611-Q1 D005-PWMIN-OUT-SLDS233.gif
Figure 7. PWM Output Duty Cycle vs Input Duty Cycle
TPS92611-Q1 typ-app-pwm-dimming-bcm-input-slds238.gif
Ch. 1 = V(SUPPLY) Ch. 2 = FAULT Ch. 3 = V(OUT)
Ch. 4 = I(OUT) f(PWM) = 1000 Hz Duty cycle = 30%
SUPPLY dimming between 2.5 V and 12 V FAULT floating
Figure 9. PWM Dimming via Power Supply
TPS92611-Q1 sys-transient-overvoltage-slds238.gif
Ch. 1 = SUPPLY Ch. 2 = V(OUT) Ch. 3 = FAULT
Ch. 4 = I(OUT)
Figure 11. Transient Overvoltage
TPS92611-Q1 sys-superimposed-alternating-voltage-slds238.gif
Ch. 1 = SUPPLY Ch. 2 = V(OUT) Ch. 3 = FAULT
Ch. 4 = I(OUT)
Figure 13. Superimposed Alternating Voltage, 15-Hz
TPS92611-Q1 sys-slow-decrease-quick-increase-slds238.gif
Ch. 1 = SUPPLY Ch. 2 = V(OUT) Ch. 3 = FAULT
Ch. 4 = I(OUT)
Figure 15. Slow Decrease, Quick Increase of Supply Voltage
TPS92611-Q1 typ-app-led-open-circuit-slds238.gif
Ch. 1 = V(OUT) Ch. 2 = FAULT Ch. 3 = I(OUT)
Figure 17. LED Open-Circuit Protection and Recovery