Back to browse
LTC4156
Dual-Input Power Manager / 3.5A LiFePO4 Battery Charger with I2C Control and USB OTG, QFN-28
Schematic Symbol
Pin Configuration (29 pins)
| Pin | Name | Type |
|---|---|---|
| 1 | SDA | bidirectional |
| 2 | DVCC | power_in |
| 3 | ~{IRQ} | open_collector |
| 4 | ID | input |
| 5 | CLPROG1 | passive |
| 6 | CLPROG2 | passive |
| 7 | WALLSNS | input |
| 8 | USBSNS | input |
| 9 | USBGT | output |
| 10 | OVGCAP | passive |
| 11 | WALLGT | output |
| 12 | V_{C} | passive |
| 13 | V_{OUTSNS} | input |
| 14 | NTCBIAS | output |
| 15 | NTC | input |
| 16 | BATSNS | input |
| 17 | BATGATE | output |
| 18 | PROG | passive |
| 19 | CHGSNS | passive |
| 20 | CHGSNS | passive |
| 21 | V_{OUT} | passive |
| 22 | V_{OUT} | passive |
| 23 | V_{BUS} | passive |
| 24 | V_{BUS} | passive |
| 25 | V_{BUS} | passive |
| 26 | SW | passive |
| 27 | SW | passive |
| 28 | SCL | input |
| 29 | GND | power_in |
Footprint
ConfirmedPackage_DFN_QFN/QFN-28-1EP_4x5mm_P0.5mm_EP2.65x3.65mm
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
29
Pads (35)
| 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 | smd |