Strange SOIC-DIP hybrid package in Chinese phone charger

[tom66]

First time I've seen one of these. It's sort of like a through hole SOIC package. Anyone know any information about it? The only datasheet I could find for the IC was in Chinese. Looks like the LED is connected to it in some fashion. I'm not sure if the LED turns off when charging is finished or something like that (detecting the phone current.)

Charger broke after I tried transient to 35V. Was very cheap - only £1 - curious how they can make it so cheap but it's pretty simple. But at least output went to 0V, not shorted to input.

edit: Please could a moderator move this elsewhere as it is posted in the wrong forum.

[mmagin]

A question that's been nagging me: Why are all the really cheap things still through-hole?  Is it because that way unskilled hand-soldering labor is more likely to assemble it correctly?  Reuse of second-hand wave-soldering equipment?

[rollatorwieltje]

If you translate the datasheet the package is called "qipai8". It's even patented in China: http://www.google.com/patents/CN102361025B?cl=en

[amyk]

MC34063
AD84064

Clearly some inspiration there...

[TerraHertz]

Copied from the patent (with some translation garbling):

[0064] QIPAI8 compared to existing DIP8, it has the following advantages:

 [0065] First, the quality advantage

 [0066] I. significantly improved reliability

 [0067] stress groove theory proposed by the invention, the base island surface structure, short flow channel structure solves the shape deformation, delamination between different substances, the chip deformation, with plastic body and between different materials, plastic body molecular structure, as well as micro-injection molding process fluid damage wiring, etc., to improve product reliability, quality can be guaranteed.  Stress Relief for the thread-shaped tank can be an excellent structural properties of the thread-shaped mechanical stress applied to the design.

 [0068] 2. The electrical and thermal performance significantly improved

 [0069] shorten micro wires, shorten lead foot, package resistance and thermal resistance decreased significantly improved electrical performance, but also improve reliability.

 [0070] Second, the cost advantages

 [0071] I. DIP8 the plastic body volume is: long 9. 2mm * Wide 6. 40mm * thick 3. 40mm = 200. 192mm3, the present invention is 8 feet for example, QIPAI8 the plastic body size 6. 5mm long 3. Omm * * wide thick I. 5_ = 29. 25mm3, can save plastic resin is: (. 200 192-29 25) / 200 192 * 100% = 85.39%, if production of 6 billion a year (about a quarter of the total) products can save RMB: 60 * 0 016 (per resin cost price) * 0 8539 = O. 82 ?

 J Li ?

 Metal lead frame plane [0072] 2.DIP8 wide expansion volume is 24.638 182.88 * * long thick O. 254) / 20 = 57. 22mm3, QIPAI8 metal lead frame plane expansion volume is ... 276. 40 * 95 00 * 0 203) / 384 = 13 88mm3, can save a metallic material:. (57 22-13 88) / 57, 22, 6 billion a year if the production of the product, the price of copper 75 yuan per kg, copper density of 8.93, the yuan can be saved as:. 60 * (. 57 · 22-13 88) * 8 93/1000/1000 * 75 = I. 74 billion.

So yeah, money. Lots of it.