Overview
The LM3551SD is a LED Driver made by Texas Instruments in a WSON-14(4x4) package with 15 pins. -40℃~+85℃ 1 1.25MHz 1A 2.7V~5.5V Boost DC-DC PWM WSON-14(4x4) LED Drivers ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:LM3551SD_NOPB, from EasyEDA) and its footprint (EasyEDA_Cloud:WSON-14_L4.0-W4.0-P0.50-BL-EP-2, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C3188077).
Symbol
Footprint
Parameters
9- Dimming
- PWM
- Features
- Over Voltage Protection；Built-in soft-start；Over-Temperature Protection (OTP)
- Frequency - Switching
- 1.25MHz
- Number of Channels
- 1
- Operating temperature
- -40℃~+85℃
- Output Current
- 1A
- Topology
- Boost
- Type
- DC-DC
- Voltage - Input(DC)
- 2.7V~5.5V
Order codes
1- LM3551SD/NOPBLCSC C3188077
Pinout
15| Pin | Name | Type |
|---|---|---|
| 1 | GND | Unspecified |
| 2 | FET-F | Unspecified |
| 3 | VC | Unspecified |
| 4 | FB | Unspecified |
| 5 | SD | Unspecified |
| 6 | AGND | Unspecified |
| 7 | GND | Unspecified |
| 8 | SW | Unspecified |
| 9 | VIN | Unspecified |
| 10 | OVP | Unspecified |
| 11 | SS | Unspecified |
| 12 | FTO | Unspecified |
| 13 | T/F | Unspecified |
| 14 | FET-T | Unspecified |
| 15 | EP | Unspecified |
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Is there a KiCad symbol and footprint for the LM3551SD?
Yes. The symbol is EasyEDA_Cloud:LM3551SD_NOPB and the footprint EasyEDA_Cloud:WSON-14_L4.0-W4.0-P0.50-BL-EP-2, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the LM3551SD?
WSON-14(4x4), with 15 pins. Its footprint is drawn on this page.
Where is the LM3551SD datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the LM3551SD?
JLCPCB lists it as part C3188077, with 0 in stock; the sellers' links on this page open their listings.
What can replace the LM3551SD?
Parts like it in the library: the LM3552SD by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
