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1FEATURES

· Up to 3-A Output Current at 85°C

· 3.3-V / 5-V Input Voltage

· Wide-Output Voltage Adjust

(0.9 V to 3.6 V)

· 160 W/in3 Power Density

· Efficiencies Up To 94%

· On/Off Inhibit

· Undervoltage Lockout (UVLO)

· Output Overcurrent Protection

(Nonlatching, Auto-Reset)

· Overtemperature Protection

· Ambient Temp. Range: –40°C to 85°C

· Surface Mount Package

· Safety Agency Approvals:

UL/IEC/CSA-C22.2 60950-1

APPLICATIONS

· Telecommunications, Instumentation, and General-Purpose Circuits

DESCRIPTION

The PTH04070W is a highly integrated, low-cost switching regulator module that delivers up to 3 A of output

current. Occupying less PCB area than a standard TO-220 linear regulator IC, the PTH04070W provides output

current at a much higher efficiency and with much less power dissipation, thereby eliminating the need for a heat

sink. Their small size (0.5 ′ 0.4 in), high efficiency, and low cost makes these modules attractive for a variety of

applications.

The input voltage range of the PTH04070W 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 PTH04070W 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. 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.