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42V, 3A Step-Down Switching Regulator


Package | PIN: PWP | 20
Temp: Q (-40 to 125)
Carrier: Partial Tube
Qty Price
1-9 $5.32
10-24 $4.79
25-99 $4.47
100-249 $4.01
250-499 $3.74
500-749 $3.26
750-999 $2.82
1000+ $2.76


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C AmbientOperating Temperature
  • Integrated 42-V, 170-mΩ N-channel MOSFET
  • Ultra-Wide Input Voltage Range from 6 V to 42 V
  • Adjustable Output Voltage as Low as 1.225 V
  • 1.5% Feedback Reference Accuracy
  • Operating Frequency Adjustable Between 50 kHz and 1 MHz with Single Resistor
  • Master or Slave Frequency Synchronization
  • Adjustable Soft-Start
  • Emulated Current Mode Control Architecture
  • Wide Bandwidth Error Amplifier
  • Built-in Protection
  • HTSSOP-20 EP (Exposed Pad)
  • Create a Custom Design Using the LM25576-Q1 With the WEBENCH® Power Designer

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Texas Instruments  LM25576QMH/NOPB

The LM25576-Q1 is an easy to use buck regulator which allows design engineers to designand optimize a robust power supply using a minimum set of components. Operating with an inputvoltage range of 6 V to 42 V, the LM25576-Q1 delivers 3 A of continuous output current with anintegrated 170-mΩ N-Channel MOSFET. The regulator utilizes an Emulated Current Mode architecturewhich provides inherent line regulation, tight load transient response, and ease of loopcompensation without the usual limitation of low-duty cycles associated with current moderegulators. The operating frequency is adjustable from 50 kHz to 1 MHz to allow optimization ofsize and efficiency. To reduce EMI, a frequency synchronization pin allows multiple IC’s from theLM(2)557x family to self-synchronize or to synchronize to an external clock. The LM25576-Q1 ensuresrobustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, andremote shut-down. The device is available in a power enhanced HTSSOP-20 package featuring anexposed die attach pad for thermal dissipation. The LM25576-Q1 is supported by the full suite ofWEBENCH® On-Line design tools.