SLDS237B January   2018  – January  2020 TPS92612-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. 7.3.2 Constant-Current Driver
      3. 7.3.3 PWM Dimming
      4. 7.3.4 Protection
        1. 7.3.4.1 Short-to-GND Protection
        2. 7.3.4.2 Overtemperature Protection
    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
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Single-Channel LED Driver
        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

6.7 Typical Characteristics

TPS92612-Q1 D001-IOUT-SUPPLY-SLDS233.gif
Figure 2. Output Current vs Supply Voltage
TPS92612-Q1 D002-IOUT-VDROP-SLDS233.gif
TA = 25 °C
Figure 4. Output Current vs Dropout Voltage
TPS92612-Q1 D004-IQ-SUPPLY-SLDS237.gif
Figure 6. Quiescent Current vs Input Voltage
TPS92612-Q1 typ-app-pwm-dimming-external-input-slds237.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
TPS92612-Q1 sys-transient-undervoltage-slds237.gif
Ch. 1 = SUPPLY Ch. 2 = V(OUT) Ch. 4 = I(OUT)
Figure 10. Transient Undervoltage
TPS92612-Q1 sys-jump-start-slds237.gif
Ch. 1 = SUPPLY Ch. 2 = V(OUT) Ch. 4 = I(OUT)
Figure 12. Jump Start
TPS92612-Q1 sys-superimposed-alternating-voltage-1k-slds237.gif
Ch. 1 = SUPPLY Ch. 2 = V(OUT) Ch. 4 = I(OUT)
Figure 14. Superimposed Alternating Voltage, 1kHz
TPS92612-Q1 sys-slow-decrease-and-increase-slds237.gif
Ch. 1 = SUPPLY Ch. 2 = V(OUT) Ch. 4 = I(OUT)
Figure 16. Slow Decrease and Slow Increase of Supply Voltage
TPS92612-Q1 typ-app-led-short-slds237.gif
Ch. 1 = SUPPLY Ch. 2 = V(OUT) Ch. 4 = I(OUT)
Figure 18. LED Short-Circuit Protection and Recovery
TPS92612-Q1 D001-IOUT-RES.gif
Figure 3. Output Current vs Current-Sense Resistor
TPS92612-Q1 D003-VDROP-TEMP-SLDS233.gif
I(OUT) setting = 150 mA
Figure 5. Output Current vs Temperature
TPS92612-Q1 D005-PWMIN-OUT-SLDS233.gif
Figure 7. PWM Output Duty Cycle vs Input Duty Cycle
TPS92612-Q1 typ-app-pwm-dimming-bcm-input-slds237.gif
Ch. 1 = V(SUPPLY) Ch. 3 = V(OUT) Ch. 4 = I(OUT)
f(PWM) = 200 Hz Duty-cycle = 10%
SUPPLY dimming between 2.5 V and 12 V
Figure 9. PWM Dimming via Power Supply
TPS92612-Q1 sys-transient-overvoltage-slds237.gif
Ch. 1 = SUPPLY Ch. 2 = V(OUT) Ch. 4 = I(OUT)
Figure 11. Transient Overvoltage
TPS92612-Q1 sys-superimposed-alternating-voltage-slds237.gif
Ch. 1 = SUPPLY Ch. 2 = V(OUT) Ch. 4 = I(OUT)
Figure 13. Superimposed Alternating Voltage, 15 Hz
TPS92612-Q1 sys-slow-decrease-quick-increase-slds237.gif
Ch. 1 = SUPPLY Ch. 2 = V(OUT) Ch. 4 = I(OUT)
Figure 15. Slow Decrease, Quick Increase of Supply Voltage
TPS92612-Q1 typ-app-led-open-circuit-slds237.gif
Ch. 1 = SUPPLY Ch. 2 = V(OUT) Ch. 4 = I(OUT)
Figure 17. LED Open-Circuit and Recovery