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Description
MAXIM INTEGRATED PRODUCTS MAX15021ATI+ DC/DC Switching Regulator, Synchronous, Dual, 2.5 V to 5.5 V in, 5.5 V/4 A out, 4 MHz, TQFN-28The MAX15021ATI+ is a dual, 4A 2A, 4MHz, step down DC to DC regulator with tracking sequencing capability in 28 pin TQFN package. The device operates from 2. 5V to 5. 5V and each output can be adjusted from 0. 6V to the input supply (VAVIN). The MAX15021 delivers up to 4A (regulator 1) and 2A (regulator 2) of output current. It offers the ability to adjust the switching frequency from 500KHz to 4MHz and provides the capability of optimizing the design
The MAX15021ATI+ is a dual, 4A/2A, 4MHz, step-down DC to DC regulator with tracking/sequencing capability in 28 pin TQFN package. The device operates from 2.5V to 5.5V and each output can be adjusted from 0.6V to the input supply (VAVIN). The MAX15021 delivers up to 4A (regulator 1) and 2A (regulator 2) of output current. It offers the ability to adjust the switching frequency from 500KHz to 4MHz and provides the capability of optimizing the design in terms of size and performance. The MAX15021 utilizes a voltage-mode control scheme with external compensation to provide good noise immunity and maximum flexibility in selecting inductor values and capacitor types. The dual switching regulators operate 180° out of phase, thereby reducing the RMS input ripple current and thus the size of the input bypass capacitor significantly. The MAX15021 offers the ability to track or sequence during power-up and power down operation. When sequencing, it powers up glitch free into a pre-biased output.
- Supply voltage range is 2.5V to 5.5V
- Operating temperature range from -40°C to 125°C
- Lossless cycle-by-cycle current limit, hiccup-mode output short-circuit protection
- Thermal shutdown
- Shutdown current is 20µA
Applications
Power Management, Automotive, Multimedia, Communications & Networking
- :
- 5.5V
- :
- 5.5V
- :
- 2A
- :
- 125°C
- :
- Adjustable
- :
- 28Pins
- :
- 2.5V
- :
- -
- :
- Synchronous Buck (Step Down)
- :
- TQFN
- :
- 4MHz
- :
- 5.5V
- :
- Each
- :
- 2 Output
- :
- 4A
- :
- MSL 1 - Unlimited
Product details
| Input Voltage Max | 5.5V |
| Output Voltage - Output 2 | 5.5V |
| Output Current - Output 2 | 2A |
| Operating Temperature Max | 125°C |
| Regulator Output Type | Adjustable |
| No. of Pins | 28Pins |
| Input Voltage Min | 2.5V |
| Product Range | - |
| Topology | Synchronous Buck (Step Down) |
| DC / DC Converter IC Case | TQFN |
| Switching Frequency | 4MHz |
| Output Voltage - Output 1 | 5.5V |
| Packaging | Each |
| No. of Outputs | 2 Output |
| Output Current - Output 1 | 4A |
| MSL | MSL 1 - Unlimited |
Other details
| Brand | MAXIM INTEGRATED PRODUCTS |
| Part Number | MAX15021ATI+ |
| Quantity | Each |
| Technical Data Sheet EN |
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. Image is for illustrative purposes only. Please refer to product description.
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Exchange/Return Notes
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4.2 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
I stay on your foot they don’t slip in your shoe
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
This is the only socks I wear Under Armour because they stay in place I wear a size 8, but they’re more comfortable with a large instead of a medium, but I wear both because I have them already and you can pull them to stretch them out a little bit
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Great fit, truly doesn’t slide off heel
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium, Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
I’ve scoured all the lands looking for a no-show sock that was 1) thin, 2) quality, soft, breathable material, 3) didn’t dig into my feet/heels, 4) doesn’t shrink, and most importantly 5) stays on the back of my heel without a bulky non-slip rubber piece and these check all the boxes! Perfect for low profile women’s work shoes like Keds, etc. Not low enough for most flats though. I wear a women’s size 9.
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Reviewed in the United States on April 19, 2025
★★★★★ 5
So good - I’m buying MORE.
Number of Items: 3, Color: White (3-pairs), Size: Medium
I’m gonna give you more detail than you need about why I’m buying these socks again.
I’ve been the mom of girl athletes. I’ve been a model and a fashion director. I’ve worn every brand of shoe on the planet and never found a shoe that did NOT find a vulnerable spot on my foot to rub raw. Even my beloved white Jack Purcell sneakers.
With that said - I don’t like socks. I’ve bought a TON of them in 35+ years.....all major brands.
They shift. They lose their shape. They get holes in them and wear out too fast. Not these.
I retired this year, and knowing I’d be in sneakers a lot, traveling, sightseeing ......
I bought these 6 months ago and have worn them constantly. I’ve traveled with them. I’ve washed them in hot water and bleach.
The socks are like brand new. They are exactly the right cut so as not to be seen in a basic sneaker. The little silicone patch on the heel stays put. Not once have I had to dig down into my shoe and pull the sock back up. The socks have stayed soft and EXACTLY the same as the day they were new.
Like I said - I am back to buy them again. Great quality!
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Reviewed in the United States on January 20, 2021
★★★★★ 5
No slip low socks
Number of Items: 3, Color: Black/White (3-pairs), Size: Medium
Perfect! ❤️ these!
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Reviewed in the United States on February 16, 2026
★★★★★ 4
Stay put!
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
Nice and thin, soft, and stay put. I wear an 8 shoe and don’t like a thick sock taking up room. These socks are a bit tight on big toe. Wish they came in large.
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Reviewed in the United States on October 10, 2023