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

6.5 Electrical Characteristics

V(SUPPLY) = 5 V–40 V, TJ = –40°C to 150°C unless otherwise noted
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
BIAS
V(POR_rising) Supply voltage, POR rising threshold 3.2 4 V
V(POR_falling) Supply voltage, POR falling threshold 2.2 3 V
I(Shutdown) Device shutdown current EN = LOW 5 10 µA
I(Quiescent) Device standby current PWM = HIGH, EN = HIGH 0.1 0.2 0.25 mA
I(FAULT) Device current in fault mode EN = HIGH, PWM = HIGH, FAULT externally pulled LOW 0.1 0.2 0.25 mA
LOGIC INPUTS (DIAGEN, PWM, EN)
VIL(DIAGEN) Input logic-low voltage, DIAGEN 1.045 1.1 1.155 V
VIH(DIAGEN) Input logic-high voltage, DIAGEN 1.14 1.2 1.26 V
VIL(PWM) Input logic-low voltage, PWM 1.045 1.1 1.155 V
VIH(PWM) Input logic-high voltage, PWM 1.14 1.2 1.26 V
VIL(EN) Input logic-low voltage, EN 0.7 V
VIH(EN) Input logic-high voltage, EN 2 V
IPD(EN) EN pin pulldown current V(EN) = 12 V 1.5 3.3 4.5 µA
CONSTANT-CURRENT DRIVER
I(OUT) Device output-current range 100% duty-cycle 4 300 mA
V(CS_REG) Sense-resistor regulation voltage TA = 25°C, V(SUPPLY) = 4.5 V to 18 V 94 98 102 mV
TA = –40°C to 125°C, V(SUPPLY) = 4.5 V to 18 V 93.5 98 102.5
R(CS_REG) Sense-resistor value 24.5 Ω
V(DROPOUT) Voltage dropout from SUPPLY to OUT V(CS_REG) voltage included, current setting = 10 mA 120 150 mV
V(CS_REG) voltage included, current setting = 70 mA 250 400
V(CS_REG) voltage included, current setting = 150 mA 430 700
V(CS_REG) voltage included, current setting = 300 mA 800 1300
DIAGNOSTICS
V(OPEN_th_rising) LED open rising threshold, V(IN) – V(OUT) 70 100 135 mV
V(OPEN_th_falling) LED open falling threshold, V(IN) – V(OUT) 235 290 335 mV
V(SG_th_falling) Channel output V(OUT) short to ground falling threshold 1.14 1.2 1.26 V
V(SG_th_rising) Channel output V(OUT) short to ground rising threshold 0.82 0.865 0.91 V
I(Retry) Channel output retry current V(OUT) = 0 V 0.64 1.08 1.528 mA
FAULT
VIL(FAULT) Logic-input low threshold 0.7 V
VIH(FAULT) Logic-input high threshold 2 V
VOL(FAULT) Logic-output low threshold With 500-µA external pullup 0.4 V
VOH(FAULT) Logic-output high threshold With 1-µA external pulldown, V(SUPPLY) = 12 V 5 7 V
I(FAULT_pulldown) FAULT internal pulldown current 500 750 1000 µA
I(FAULT_pullup) FAULT internal pullup current 5 8 12 µA
THERMAL PROTECTION
T(TSD) Thermal shutdown junction temperature threshold 172 °C
T(TSD_HYS) Thermal shutdown junction temperature hysteresis 15 °C