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3-A, 3.3/5-V Input Adjustable Switching Regulator with Auto-Track Sequencing


Package | PIN: EUT | 6
Temp: I (-40 to 85)
Carrier: Partial Tray
Qty Price
1-9 $9.32
10-24 $8.66
25-99 $8.36
100-249 $7.30
250-499 $6.95
500-749 $6.40
750-999 $5.74
1000+ $5.72


  • Up to 3-A OutputCurrent at 85°C
  • 3.3-V / 5-V Input Voltage
  • Wide-Output Voltage Adjust (0.9 V to 3.6 V)
  • Efficiencies Up To 94%
  • On/Off Inhibit
  • Undervoltage Lockout (UVLO)
  • Output Overcurrent Protection (Nonlatching, Auto-Reset)
  • Overtemperature Protection
  • Ambient Temperature Range: -40°C to 85°C
  • Point-of-Load Alliance (POLA)™ Compatible
  • Surface Mount Package
  • Safety Agency Approvals: - UL/IEC/CSA-22.2 60950-1
    • Telecommunications, Instrumentation, and General-Purpose Circuits

POLA, Auto-Track, TMS320 are trademarks of Texas Instruments.

Texas Instruments  PTH04000WAZ

The PTH04000W is a highly integrated, low-cost switching regulator module that delivers up to 3 A of output current. Occupying a small PCB area, the PTH04000W provides output current at a high efficiency and with minimal power dissipation, thereby eliminating the need for a heat sink. Their small size (0.75 inch × 0.5 inch), high efficiency, and low cost makes these modules practical for a variety of applications.

The input voltage range of the PTH04000W is from 3 V to 5.5 V, allowing operation from either a 3.3-V or 5-V input bus. Using state-of-the-art switched-mode power-conversion technology, the PTH04000W can step down to voltages as low as 0.9 V from a 5-V input bus, with typically less than 1 W of power dissipation. The output voltage can be adjusted to any voltage over the range, 0.9 V to 3.6 V, using a single external resistor. This series includes Auto-Track™ sequencing. This feature simplifies the task of supply voltage sequencing in a power system by enabling modules to track each other, or any external voltage, during power up and power down. Other operating features include an undervoltage lockout (UVLO), on/off inhibit, output overcurrent protection, and overtemperature protection. Target applications include telecommunications, test and measurement applications, and high-end consumer products. The modules are available in both through-hole and surface-mount package options, including tape and reel. The PTH04000W is also compatible with TI's roadmap for RoHS and lead-free compliance.