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42V, 0.5A Step-Down Switching Regulator


Package | PIN: PW | 16
Temp: Q (-40 to 125)
Carrier: Partial Tube
Qty Price
1-9 $4.01
10-24 $3.61
25-99 $3.36
100-249 $2.94
250-499 $2.76
500-749 $2.35
750-999 $1.98
1000+ $1.89


  • 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, 750-mΩ N-Channel MOSFET
  • Ultra-Wide Input Voltage 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
  • TSSOP-16 Package
  • Create a Custom Design Using the LM25574-Q1 With the WEBENCH® Power Designer

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Texas Instruments  LM25574QMT/NOPB

The LM25574-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 LM25574-Q1 delivers 0.5-A of continuous output current with anintegrated 750-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 LM25574-Q1guarantees robustness with cycle-by-cycle current limit, short-circuit protection, thermalshut-down, and remote shut-down. The device is available in a TSSOP-16 package.