Back to browse
LTC3890
60V dual 2-phase synchronous step-down DC/DC controller, QFN-32
Schematic Symbol
Pin Configuration (33 pins)
| Pin | Name | Type |
|---|---|---|
| 1 | SENSE1- | input |
| 2 | FREQ | input |
| 3 | PHASMD | input |
| 4 | CLKOUT | output |
| 5 | PLLIN/MODE | input |
| 6 | GND | power_in |
| 7 | RUN1 | input |
| 8 | RUN2 | input |
| 9 | SENSE2- | input |
| 10 | SENSE2+ | input |
| 11 | VFB2 | input |
| 12 | ITH2 | passive |
| 13 | TRACK/SS2 | input |
| 14 | PGOOD2 | output |
| 15 | TG2 | output |
| 16 | SW2 | output |
| 17 | BOOST2 | output |
| 18 | BG2 | output |
| 19 | INTVcc | power_out |
| 20 | EXTVcc | power_in |
| 21 | PGND | power_in |
| 22 | Vin | power_in |
| 23 | BG1 | output |
| 24 | BOOST1 | output |
| 25 | SW1 | output |
| 26 | TG1 | output |
| 27 | PGOOD1 | output |
| 28 | ILIM | input |
| 29 | TRACK/SS1 | input |
| 30 | ITH1 | passive |
| 31 | VFB1 | input |
| 32 | SENSE1+ | input |
| 33 | GND | power_in |
Footprint
ConfirmedPackage_DFN_QFN/QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm
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
29
30
31
32
33
Pads (42)
| Number | Type |
|---|---|
| — | smd |
| — | smd |
| — | smd |
| — | 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 | smd |
| 30 | smd |
| 31 | smd |
| 32 | smd |
| 33 | smd |