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LT3514xUFD
Triple Step-Down Switching Regulator with 100% Duty Cycle Operation, QFN-28
Schematic Symbol
Pin Configuration (29 pins)
| Pin | Name | Type |
|---|---|---|
| 1 | NC | no_connect |
| 2 | NC | no_connect |
| 3 | DA3 | input |
| 4 | SW3 | power_out |
| 5 | SW1 | power_out |
| 6 | DA1 | input |
| 7 | SW4 | power_out |
| 8 | DA4 | input |
| 9 | VIN | passive |
| 10 | GND | passive |
| 11 | VIN | passive |
| 12 | RUN/SS4 | input |
| 13 | RUN/SS1 | input |
| 14 | NC | no_connect |
| 15 | RUN/SS3 | input |
| 16 | EN/UVLO | input |
| 17 | RT/SYNC | passive |
| 18 | GND | passive |
| 19 | FB4 | input |
| 20 | FB1 | input |
| 21 | FB3 | input |
| 22 | NC | no_connect |
| 23 | PG | open_collector |
| 24 | SW5 | open_collector |
| 25 | SKY | passive |
| 26 | VIN | passive |
| 27 | GND | passive |
| 28 | VIN | power_in |
| 29 | GND | power_in |
Footprint
ConfirmedPackage_DFN_QFN/QFN-28-1EP_4x5mm_P0.5mm_EP2.65x3.65mm_ThermalVias
Pad Layout
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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
29
29
29
29
29
29
29
29
29
29
29
29
29
29
Pads (48)
| Number | Type |
|---|---|
| — | smd |
| — | smd |
| — | 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 | smd |
| 22 | smd |
| 23 | smd |
| 24 | smd |
| 25 | smd |
| 26 | smd |
| 27 | smd |
| 28 | smd |
| 29 | thru hole |
| 29 | thru hole |
| 29 | thru hole |
| 29 | thru hole |
| 29 | thru hole |
| 29 | thru hole |
| 29 | smd |
| 29 | smd |
| 29 | thru hole |
| 29 | thru hole |
| 29 | thru hole |
| 29 | thru hole |
| 29 | thru hole |
| 29 | thru hole |