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LM25149RGYR +BOM

42-V synchronous buck DC/DC controller with ultra-low IQ and integrated active EMI filter

LM25149RGYR General Description

Despite its advanced functionality, the LM25149RGYR is designed with practicality in mind. Its small 20-pin VQFN package makes it suitable for space-constrained designs, allowing engineers to integrate it seamlessly into compact systems without compromising performance or efficiency

Key Features

  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Two integrated EMI mitigation mechanisms
    • Active EMI Filter for enhanced EMI performance at lower frequencies
    • Selectable dual random spread spectrum (DRSS) for enhanced EMI performance across low and high-frequency bands
    • EMI reduced by an average of 25 dBµV
    • Reduces the external differential-mode input filter size by 50% and lowers systems cost
    • Optimized for CISPR 32 Class B requirements
  • Versatile synchronous buck DC/DC controller
    • Wide input voltage range of 3.5 V to 42 V
    • 1% accurate, fixed 3.3-V, 5-V, 12-V, or adjustable output from 0.8 V to 36 V
    • 150°C maximum junction temperature
    • Shutdown mode current: 2.3 µA
    • No-load sleep current: 9.5 µA
    • Stackable up to two phases
    • Advanced dropout with frequency foldback
  • Switching frequency from 100 kHz to 2.2 MHz
    • SYNC in and SYNC out capability
  • Inherent protection features for robust design
    • Internal hiccup-mode overcurrent protection
    • ENABLE and PGOOD functions
    • VCC, VDDA, and gate-drive UVLO protection
    • Internal or external loop compensation
    • Thermal shutdown protection with hysteresis
  • Create a custom design using the LM25149 with WEBENCH Power Designer

Specifications

Source Content uid LM25149RGYR Pbfree Code Yes
Part Life Cycle Code Active Reach Compliance Code compliant
Analog IC - Other Type SWITCHING CONTROLLER Control Mode CURRENT-MODE
Control Technique PULSE WIDTH MODULATION JESD-30 Code S-XQCC-N24
Moisture Sensitivity Level 2 Number of Functions 1
Number of Outputs 1 Number of Terminals 24
Peak Reflow Temperature (Cel) 260 Surface Mount YES
Switcher Configuration BUCK Temperature Grade AUTOMOTIVE
Terminal Finish NICKEL PALLADIUM GOLD Terminal Form NO LEAD
Terminal Position QUAD

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