Overview
The LM4857SP is an audio Amplifier made by Texas Instruments in a UQFN-28-EP(5x5) package with 29 pins. -40℃~+85℃ 1.6Wx2@4Ω 2-Channel 2.7V~5.5V Automatic mute/no-noise switch、Enable/shutdown function、Digitally programmable gain UQFN-28-EP(5x5) Audio Amplifiers ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:LM4857SP_NOPB, from EasyEDA) and its footprint (EasyEDA_Cloud:UQFN-28_L5.0-W5.0-P0.50-BL-EP3.6, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C2864394).
Symbol
Footprint
Parameters
4- Operating Temperature
- -40℃~+85℃
- Output Power
- 1.6Wx2@4Ω
- Speaker Channels
- 双声道
- Supply Voltage
- 2.7V~5.5V
Order codes
1- LM4857SP/NOPBLCSC C2864394
Pinout
29| Pin | Name | Type |
|---|---|---|
| 1 | RHP | Unspecified |
| 2 | VDD | Unspecified |
| 3 | LINEOUT | Unspecified |
| 4 | GND | Unspecified |
| 5 | EP- | Unspecified |
| 6 | EP+ | Unspecified |
| 7 | LHP | Unspecified |
| 8 | RIN | Unspecified |
| 9 | LIN | Unspecified |
| 10 | MIN | Unspecified |
| 11 | LLS3D | Unspecified |
| 12 | RLS3D | Unspecified |
| 13 | BYPASS | Unspecified |
| 14 | VDD | Unspecified |
| 15 | LLS+ | Unspecified |
| 16 | GND | Unspecified |
| 17 | LLS- | Unspecified |
| 18 | VDD | Unspecified |
| 19 | RLS- | Unspecified |
| 20 | GND | Unspecified |
| 21 | RLS+ | Unspecified |
| 22 | VDD | Unspecified |
| 23 | I2CVDD | Unspecified |
| 24 | SDA | Unspecified |
| 25 | ADR | Unspecified |
| 26 | SCL | Unspecified |
| 27 | RHP3D | Unspecified |
| 28 | LHP3D | Unspecified |
| 29 | EP | Unspecified |
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Is there a KiCad symbol and footprint for the LM4857SP?
Yes. The symbol is EasyEDA_Cloud:LM4857SP_NOPB and the footprint EasyEDA_Cloud:UQFN-28_L5.0-W5.0-P0.50-BL-EP3.6, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the LM4857SP?
UQFN-28-EP(5x5), with 29 pins. Its footprint is drawn on this page.
Where is the LM4857SP datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the LM4857SP?
JLCPCB lists it as part C2864394, with 0 in stock; the sellers' links on this page open their listings.
What can replace the LM4857SP?
Parts like it in the library: the LM4859SP by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
