PTH08080W 2.25 A, 4.5-V to 18-V Input Wide Adjust Miniature Power Module |


2.25 A, 4.5-V to 18-V Input Wide Adjust Miniature Power Module


Recommended alternative parts

  • LMZ31704  -  While the PTH08080W is still active and fully supported, the LMZ31704 is offered in a smaller over-molded QFN-style power module.


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 surface-mount package options, including tape and reel.


  • 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

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Parametrics Compare all products in Buck modules (integrated inductor)

Iout (Max) (A)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Soft Start
Regulated Outputs (#)
Package Size: mm2:W x L (PKG)
Operating Temperature Range (C)
Duty Cycle (Max) (%)
Package Group
PTH08080W PTH08000W
2.25     2.25    
4.5     4.5    
18     14    
0.9     0.9    
5.5     5.5    
Fixed     Fixed    
Output Discharge
1     1    
5Surface Mount Module: 223 mm2: 13.72 x 16.25 (Surface Mount Module | 5)
5Through-Hole Module: 223 mm2: 13.72 x 16.25 (Through-Hole Module | 5)    
6Surface Mount Module: 271 mm2: 13.59 x 19.94 (Surface Mount Module | 6)
6Through-Hole Module: 271 mm2: 13.59 x 19.94 (Through-Hole Module | 6)    
Buck     Buck    
-40 to 85     -40 to 85    
100     100    
Surface Mount Module | 5
Through-Hole Module | 5    
Surface Mount Module | 6
Through-Hole Module | 6    
Catalog     Catalog    
Module     Module