1FEATURES

2· Up to 2.25-A Output Current at 85°C

· 4.5-V to 14-V Input Voltage Range

· Wide-Output Voltage Adjust

(0.9 V to 5.5 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

· Surface-Mount Package

· Safety Agency Approvals:

UL/CUL 60950, EN60950

APPLICATIONS

· Telecommunications, Instrumentation,

and General-Purpose Circuits

DESCRIPTION

The PTH08000W is a highly integrated, low-cost switching regulator module that delivers up to 2.25 A of output

current. The PTH08000W sources output current at a much higher efficiency than a TO-220 linear regulator IC,

eliminating the need for a heatsink. The small size (0.75 inch ´ 0.5 inch) and flexible operation creates value for

a variety of applications.

The input voltage range of the PTH08000W is 4.5 V to 14 V, allowing operation from either a 5-V or 12-V input

bus. Using state-of-the-art switched-mode power-conversion technology, the PTH08000W can step down to

voltages as low as 0.9 V from a 5-V input bus, with less than 1 W of power dissipation. The output voltage can

be adjusted to any voltage over the range, 0.9 V to 5.5 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. Operating

features include an undervoltage lockout (UVLO), on/off inhibit, overcurrent protection, and overtemperature

protection. Target applications include telecommunications, test and measurement applications, and high-end

consumer products. This product is available in both through-hole and surface-mount package options, including

tape and reel. The PTH08000W is compatible with TI's roadmap for RoHS and lead-free compliance.