LM62440-Q1

PREVIEW

This product is prototype/experimental and has not been released to the market. Testing and final processes may not be complete. This product may be subject to further changes or possible discontinuation.

Automotive 3-V to 36-V, 4-A, low-noise synchronous step-down converter

• AEC-Q100 qualified for automotive applications
  • Device temperature grade 1, T_A range –40°C to +125°C , and T_J range –40°C to +150°C
• Low EMI
  • Adjustable SW node rise time
  • Spread spectrum to reduce peak emissions
  • Fixed 2.2MHz frequency, or synchronize over 200 kHz – 2.2 MHz range
  • Pin selectable FPWM mode for constant frequency at light loads
  • 4 mm × 3.5 mm low-EMI VQFN-HR package (with wettable flanks) and pinout
• High efficiency power conversion at all loads
  • 8-µA standby current with V_IN = 13.5 V, V_OUT = 3.3 V, no load
  • Frequency foldback in light load for improved efficiency with Auto Mode
  • Low MOSFET ON Resistance
    R_{DS_ON_HS} = 41 mΩ (typical)
    R_{DS_ON_LS} = 21 mΩ (typical)
• Wide Conversion Range
  • Input voltage: 3 V to 36 V
  • Output voltage adjustable from 1 V to 95% of V_IN, with factory options for 5-V and 3.3-V fixed output voltage
  • DC load current: 0 A to 4 A
  • t_{ON_MIN} = 50 ns (typical)
  • t_{OFF_MIN} = 70 ns (typical)
• PGood output with filter and delayed release
• Built-in compensation, soft start, current limits, hiccup protection, thermal shutdown, and UVLO

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