6 A, 3.3-V Input Non-Isolated Wide Adjust Module w/ Auto-Track


Product details


Iout (Max) (A) 6 Vin (Min) (V) 2.95 Vin (Max) (V) 3.65 Vout (Min) (V) 0.8 Vout (Max) (V) 2.5 Soft start Fixed Features Enable, Output Discharge, Tracking Operating temperature range (C) -40 to 85 Regulated outputs (#) 1 Duty cycle (Max) (%) 100 Topology Buck open-in-new Find other Buck modules (integrated inductor)

Package | Pins | Size

Surface Mount Module (EUV) 6 314 mm² 23.12 x 13.59 Through-Hole Module (EUU) 6 314 mm² 23.12 x 13.59 open-in-new Find other Buck modules (integrated inductor)


  • Up to 6-A Output Current
  • 3.3-V Input Voltage
  • Wide-Output Voltage Adjust (0.8 V to 2.5 V)
  • Efficiencies up to 94 %
  • 103 W/in3 Power Density
  • On/Off Inhibit
  • Pre-Bias Startup
  • Under-Voltage Lockout
  • Operating Temp: –40 to +85 °C
  • Auto-Track™ Sequencing
  • Output Over-Current Protection (Non-Latching, Auto-Reset)
  • IPC Lead Free 2
  • Safety Agency Approvals: UL 1950, CSA 22.2 950, EN60950 VDE (Pending)
  • Point-of-Load Alliance (POLA) Compatible

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The PTH03050 is one of the smallest non-isolated power modules from Texas Instruments that features Auto-Track™. Auto-Track simplifies supply voltage sequencing in power systems by enabling modules to track each other, or any other external voltage, during power up and power down.

Although small in size (0.87 in × 0.5 in), these modules are rated for up to 6 A of output current, and are an ideal choice in applications where space, performance, and a power-up sequencing capability are important attributes.

The product provides high-performance step-down conversion from a 3.3-V input bus voltage. The output voltage of the PTH03050W can be set to any voltage over the range, 0.8 V to 2.5 V, using a single resistor.

Other operating features include an on/off inhibit, output voltage adjust (trim), and output over-current protection. For high efficiency these parts employ a synchronous rectifier output stage, but a pre-bias hold-off capability ensures that the output will not sink current during startup.

Target applications include telecom, industrial, and general purpose circuits, including low-power dual-voltage systems that use a DSP, microprocessor, ASIC, or FPGA.

Package options include both throughhole and surface mount configurations.

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Technical documentation

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Type Title Date
* Datasheet PTH03050: 6 A, 3.3-V Input Non-Isolated Power Module with Auto-Track datasheet (Rev. C) May 21, 2004
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application notes High-Temperatures Soldering Requirements for Plug-in Power, Surface-Mount Pdts (Rev. A) Aug. 13, 2009
Application notes New power modules improve surface-mount manufacturability Jul. 14, 2005

Design & development

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Surface Mount Module (EUV) 6 View options
Through-Hole Module (EUU) 6 View options

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