1FEATURES
• Up to 2.25-A Output Current at 85°C
• 4.5-V to 18-V Input Voltage Range
• Wide-Output Voltage Adjust
(0.9 V to 5.5 V)
• Efficiencies Up To 93%
• 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, Instumentation, surfaceand
General-Purpose Circuits

DESCRIPTION
The PTH08080W is a highly integrated, low-cost
switching regulator module that delivers up to 2.25 A of output current. The PTH08080W sources output
current at a much higher efficiency than a TO-220
linear regulator IC, thereby eliminating the need for a
heat sink. Its small size (0.5 × 0.6 in) and flexible
operation creates value for a variety of applications.
The input voltage range of the PTH08080W is from
4.5 V to 18 V, allowing operation from either a 5-V or
12-V input bus. Using state-of-the-art switched-mode
power-conversion technology, the PTH08080W 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. 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 surfaceand
mount package options, including tape and reel.