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MAX17634AATP
4.5V to 36V, 4.25A, High-Efficiency, Synchronous Step-Down DC-DC Converter, Fixed 3.3V, TQFN-20 (JEDEC WQFN)
Schematic Symbol
Pin Configuration (21 pins)
| Pin | Name | Type |
|---|---|---|
| 1 | PGND | power_in |
| 2 | IN | power_in |
| 3 | IN | passive |
| 4 | EN/UVLO | input |
| 5 | ~{RESET} | open_collector |
| 6 | INTVCC | passive |
| 7 | SGND | power_in |
| 8 | SS | passive |
| 9 | FB | input |
| 10 | RT | passive |
| 11 | MODE/SYNC | passive |
| 12 | EXTVCC | power_in |
| 13 | NC | no_connect |
| 14 | IN | passive |
| 15 | PGND | passive |
| 16 | NC | no_connect |
| 17 | LX | power_out |
| 18 | LX | passive |
| 19 | LX | passive |
| 20 | BST | passive |
| 21 | SGND | passive |
Footprint
ConfirmedPackage_DFN_QFN/TQFN-20-1EP_4x4mm_P0.5mm_EP2.9x2.9mm_ThermalVias
Pad Layout
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2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
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19
20
21
21
21
21
21
21
21
21
21
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21
Pads (35)
| Number | Type |
|---|---|
| — | smd |
| — | smd |
| — | smd |
| — | smd |
| 1 | smd |
| 2 | smd |
| 3 | smd |
| 4 | smd |
| 5 | smd |
| 6 | smd |
| 7 | smd |
| 8 | smd |
| 9 | smd |
| 10 | smd |
| 11 | smd |
| 12 | smd |
| 13 | smd |
| 14 | smd |
| 15 | smd |
| 16 | smd |
| 17 | smd |
| 18 | smd |
| 19 | smd |
| 20 | smd |
| 21 | thru hole |
| 21 | thru hole |
| 21 | thru hole |
| 21 | thru hole |
| 21 | thru hole |
| 21 | smd |
| 21 | smd |
| 21 | thru hole |
| 21 | thru hole |
| 21 | thru hole |
| 21 | thru hole |