Question power converter board

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Description : This is super mini DC - DC step down voltage converter module supporting DC 5-16V input and 1.25V / 1.5V / 1.8V / 2.5V / 3.3V / 5V fixed voltage output . Onboard MP1495 buck chip with high power conversion efficiency up to 90%, save energy. Unique short connection voltage adjustment design ensure the output accuracy better performance than potentiometer type voltage converter module. Features : Mini DC - DC step down regulated voltage converter module with dc input. 5-16v and 1.25v/1.5v/1.8v/2.5v/3.3v/5v fixed voltage output N-board mp1495 buck chip with high power conversion efficiency up to 90%, save energy Unique connection voltage adjustment design short ensure the output accuracy better performance than potentiometer voltage converter module type Specifications: Chip: MP1495 Input voltage: dc 5-16v Output voltage: 1.25v/1.5v/1.8v/2.5v/3.3v/ 5v (default 1.25v) Max Output Current: 3A Max Conversion Efficiency: 90% Board Size: 3x 2cm/1.18x0.79" (lxw) Quantity: 1 Pc Note: Please allow 1-3mm error Due to manual measurement Please make sure you do not mind before bidding @ Due to the difference between different monitors, the picture may not reflect the actual color of the item.Thanks No Retail Package Package Includes: 1 x mp1495 dc step down voltage regulator module
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AFE123

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Description : This is super mini DC - DC step down voltage converter module supporting DC 5-16V input and 1.25V / 1.5V / 1.8V / 2.5V / 3.3V / 5V fixed voltage output . Onboard MP1495 buck chip with high power conversion efficiency up to 90%, save energy. Unique short connection voltage adjustment design ensure the output accuracy better performance than potentiometer type voltage converter module. Features : Mini DC - DC step down regulated voltage converter module with dc input. 5-16v and 1.25v/1.5v/1.8v/2.5v/3.3v/5v fixed voltage output N-board mp1495 buck chip with high power conversion efficiency up to 90%, save energy Unique connection voltage adjustment design short ensure the output accuracy better performance than potentiometer voltage converter module type Specifications: Chip: MP1495 Input voltage: dc 5-16v Output voltage: 1.25v/1.5v/1.8v/2.5v/3.3v/ 5v (default 1.25v) Max Output Current: 3A Max Conversion Efficiency: 90% Board Size: 3x 2cm/1.18x0.79" (lxw) Quantity: 1 Pc Note: Please allow 1-3mm error Due to manual measurement Please make sure you do not mind before bidding @ Due to the difference between different monitors, the picture may not reflect the actual color of the item.Thanks No Retail Package Package Includes: 1 x mp1495 dc step down voltage regulator module
This is the seller's description.
For the 1.25V reg, it won't output enough current. the 1.25V voltage line will require 3.1A. For the 2.5V and 5V line, it should work. Finally, the 1.75V can work, but it will be unstable. Its recommended to use a linear regulator. For my setup, I'm using two PTH regs, one PTR reg and a LP38691DTX-1.9/NOPB. The last reg outputs 1.8V, but it's close enough to the 1.75V line.

Are TI regs difficult for you to get? I know in some places, they're difficult to obtain.
 
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