SNVSCV8B October   2024  – February 2026 LM68625-Q1 , LM68635-Q1 , LM68645-Q1

PRODUCTION DATA  

  1.   1
  2. 1Features
  3. 2Applications
  4. 3Description
  5. 4Device Comparison Table
  6. 5Device and Documentation Support
    1. 5.1 Device Support
      1. 5.1.1 Third-Party Products Disclaimer
      2. 5.1.2 Development Support
        1. 5.1.2.1 Custom Design With WEBENCH® Tools
    2. 5.2 Documentation Support
      1. 5.2.1 Related Documentation
    3. 5.3 Receiving Notification of Documentation Updates
    4. 5.4 Support Resources
    5. 5.5 Trademarks
    6. 5.6 Electrostatic Discharge Caution
    7. 5.7 Glossary
  7. 6Revision History
  8. 7Mechanical, Packaging, and Orderable Information

1 Features

  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature
  • Functional Safety-Compliant
    • Documentation available to aid ISO 26262 system designs per IEC TR 62380
    • Systematic capability up to ASIL D
    • Hardware capability up to ASIL C
    • Analog built-in-self-test at start-up
    • Redundant and fast (0.35μs) VOUT monitor
    • Feedback path failure detection
    • Redundant temperature sensor
    • Excellent pin FMEA and pin spacing
  • Wide input voltage range: 3V to 65V (70V transient)
    • Meets LV148 / ISO 21780 requirements
  • Designed for low EMI
    • Facilitates CISPR 25 Class 5 compliance
    • ±5% dual-random spread spectrum
    • Enhanced HotRod™ QFN package
    • Switching frequency from 300kHz to 2.2MHz
    • Pin-configurable AUTO or FPWM operation
    • Internal compensation, current limit, and OTP
  • Low minimum on time: 40ns (maximum)
    • Enables 36VIN to 3.3VOUT at 2.2MHz
  • High-efficiency power conversion at all loads
    • > 94% peak efficiency at 24VIN, 5VOUT, 400kHz
    • 2.5µA switching input current at no load
  • High power density
    • Compact 3.6mm × 2.6mm, 20-pin eQFN package with wettable flanks
    • Pin compatible with 36V LM65440-Q1, LM65460-Q1, LM65480-Q1
    • θJA = 24°C/W (LM68645-Q1EVM)
  • Create a custom design using the LM686x5-Q1 with the WEBENCH® Power Designer
LM68625-Q1 LM68635-Q1 LM68645-Q1 LM6x645-Q1 Efficiency, VOUT = 5V, FSW = 400kHz LM6x645-Q1 Efficiency, VOUT = 5V, FSW = 400kHz