Need help to identify this IC

[Icuol2218]

Hi, can someone tell me what is this IC for ? I seach the internet look for the datasheet but only found a datasheet for different device.

[squadchannel]

this?

[squadchannel]

Custom module. Switching controller. There's no datasheet.
made by Eta Electric Industry. already bankrupt.

[u666sa]

Hi, can someone tell me what is this IC for ? I seach the internet look for the datasheet but only found a datasheet for different device.

EH12AA

Digital Hall-Effect Sensor 3.8V to 30V

EH12AA Description
EH12AA is a high-performance, low-noise, 12 V switching regulator designed for stable power delivery in industrial and consumer electronics. It features integrated MOSFETs, enabling efficient operation with minimal external components. The device supports wide input voltage ranges and offers excellent load and line regulation, making it ideal for applications requiring reliable DC-DC conversion.

Key Parameters
Parameter   Value
Output Voltage   12 V
Input Voltage Range   8.5 V to 36 V
Maximum Output Current   3 A
Switching Frequency   500 kHz
Operating Temperature Range   -40°C to +125°C
Quiescent Current   70 µA
Efficiency   Up to 95%
Package Type   TO-263-5 (D²Pak)
Protection Features   Overcurrent, Overtemperature, Short-Circuit
Replacement Models
For equivalent or improved performance, consider the following models:

EH12AB – Enhanced thermal performance and higher current capability.
EH12AC – Supports lower quiescent current and improved efficiency at light loads.
EH12AD – Optimized for compact designs with reduced footprint.

https://www.utsource.net/itm/p/9224972.html?srsltid=AfmBOoodphWklJ-pd6JmYrwVpvVdn9hOlWhEAZubmLs5QfcuDntl4f_s

[SiliconWizard]

Really? Is it a Digital Hall-Effect Sensor or a switching converter?

[u666sa]

https://www.amazon.ca/Xucus-Ceramic-Genuine-Original-Assurance/dp/B07MNF29BP

[u666sa]

https://www.taobao.com/list/item/dGhraU5xL0g3SVZxRWYyYktvSWxuUT09.htm

[u666sa]

Really? Is it a Digital Hall-Effect Sensor or a switching converter?

low-noise, 12 V switching regulator make more sense. 

[Alex Eisenhut]

A switching converter in the worst possible package and no inductor nearby?

"Package Type   TO-263-5 (D²Pak)"

Nope...

[fzabkar]

This listing suggests that the manufacturer is Nichicon:

https://www.aliexpress.com/item/1005009749808503.html

I don't believe it, though.

This would appear to confirm @squadchannel's post:

https://www.yuyiplc.com/products/9317/image/ETA%20ELECTRIC%20INDUSTRY%20POWER%20SOURCE%20PLE24HSZ_2.jpg

[amyk]

What's the machine it's found in? It appears to be of Japanese origin; they were well known for using hybrid circuits in SIP packages like that.

[squadchannel]

It's Eta, it must be a SMPS.

Looking at the photo, it seems like there’s just an IC and a capacitor.
probably something like the SO-16 type. so if you soak it in acetone, it might be able to figure out what it is.

[Icuol2218]

Yes, it is ETA