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LTC1437A
High Efficiency Low Noise Synchronous Step-Down Switching Regulators, SSOP-28
Schematic Symbol
Pin Configuration (28 pins)
| Pin | Name | Type |
|---|---|---|
| 1 | PLLLPF | passive |
| 2 | COSC | passive |
| 3 | RUN/SS | passive |
| 4 | LBO | open_collector |
| 5 | LBI | input |
| 6 | ITH | passive |
| 7 | SFB | passive |
| 8 | SGND | power_in |
| 9 | VPROG | input |
| 10 | VOSENSE | input |
| 11 | NC | no_connect |
| 12 | SENSE- | input |
| 13 | SENSE+ | input |
| 14 | AUXON | input |
| 15 | AUXFB | input |
| 16 | AUXDR | open_collector |
| 17 | EXTVCC | power_in |
| 18 | PGND | power_in |
| 19 | BG | output |
| 20 | DRVCC | power_in |
| 21 | INTVCC | power_in |
| 22 | VIN | power_in |
| 23 | TGS | output |
| 24 | SW | passive |
| 25 | TGL | output |
| 26 | BOOST | passive |
| 27 | POR | open_collector |
| 28 | PLLIN | input |
Footprint
ConfirmedPackage_SO/SSOP-28_5.3x10.2mm_P0.65mm
Pad Layout
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Pads (28)
| Number | Type |
|---|---|
| 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 | smd |
| 22 | smd |
| 23 | smd |
| 24 | smd |
| 25 | smd |
| 26 | smd |
| 27 | smd |
| 28 | smd |