SNVSB33 May   2018 LM3102-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Typical Application Schematic
      2.      Efficiency vs Load Current (VOUT = 3.3 V)
  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 Switching Characteristics
    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  COT Control Circuit Overview
      2. 7.3.2  Start-Up Regulator (VCC)
      3. 7.3.3  Regulation Comparator
      4. 7.3.4  Zero Coil Current Detect
      5. 7.3.5  Overvoltage Comparator
      6. 7.3.6  Current Limit
      7. 7.3.7  N-Channel MOSFET and Driver
      8. 7.3.8  Soft Start
      9. 7.3.9  Thermal Protection
      10. 7.3.10 Thermal Derating
    4. 7.4 Device Functional Modes
      1. 7.4.1 ON-Time Timer, Shutdown
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Custom Design With WEBENCH® Tools
        2. 8.2.2.2 Design Steps for the LM3102-Q1 Application
        3. 8.2.2.3 External Components
      3. 8.2.3 Application Curve
    3. 8.3 System Examples
  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 Device Support
      1. 11.1.1 Development Support
        1. 11.1.1.1 Custom Design With WEBENCH® Tools
    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

6.6 Switching Characteristics

over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
RDS-UP-ON Main MOSFET RDS(on) 0.18 Ω
over the full Operating Junction Temperature (TJ) range 0.375
RDS- DN-ON Syn. MOSFET RDS(on) 0.11 Ω
over the full Operating Junction Temperature (TJ) range 0.225
VG-UVLO Gate drive voltage UVLO VBST - VSW increasing 3.3 V
over the full Operating Junction Temperature (TJ) range 4
SOFT START
ISS SS pin source current VSS = 0.5 V 8 µA
over the full Operating Junction Temperature (TJ) range 6 10
CURRENT LIMIT
ICL Syn. MOSFET current limit threshold 2.7 A
ICL Syn. MOSFET current limit threshold 1.5 A
ON/OFF TIMER
ton ON timer pulse width VIN = 10 V, RON = 100 kΩ 1.38 µs
VIN = 30 V, RON = 100 kΩ 0.47
ton-MIN ON timer minimum pulse width 150 ns
toff OFF timer pulse width 260 ns
ENABLE INPUT
VEN EN Pin input threshold VEN rising 1.18 V
over the full Operating Junction Temperature (TJ) range 1.13 1.23
Enable threshold hysteresis VEN falling 90 mV
REGULATION AND OVERVOLTAGE COMPARATOR
VFB In-regulation feedback voltage VSS ≥ 0.8 V TJ = –40°C to +125°C 0.8 V
over the full Operating Junction Temperature (TJ) range 0.784 0.816
VSS ≥ 0.8 V TJ = 0°C to +125°C over the full Operating Junction Temperature (TJ) range 0.788 0.812
VFB-OV Feedback overvoltage threshold 0.92 V
over the full Operating Junction Temperature (TJ) range 0.888 0.945
IFB 5 nA
THERMAL SHUTDOWN
TSD Thermal shutdown temperature TJ rising 165 °C
TSD-HYS Thermal shutdown temperature hysteresis TJ falling 20 °C