

Overview
The L7809 is a voltage Regulators Linear, Low Drop Out (LDO) Regulator made by PUOLOP in a TO-220 package with 3 pins. -20℃~+125℃@(Tj) 1 1.5A 2V@(1.0A) 35V 58uV 5mA 66dB@(120Hz) 9V Fixed Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.
PCBKit's library has its KiCad symbol (Regulator_Linear:L7809, from KiCad's library) and its footprint (EasyEDA_Cloud:TO-220-3_L10.0-W4.5-P2.54-L-1, from EasyEDA), ready for a KiCad board. 50 are in stock at JLCPCB (part C2843719). 60 open-source boards in 43 repositories on GitHub use it.
Symbol
Footprint
Parameters
11- Noise
- 58uV
- Number of Outputs
- 1
- Operating Temperature
- -20℃~+125℃@(Tj)
- Output Configuration
- Positive
- Output Current
- 1.5A
- Output Type
- Fixed
- Output Voltage
- 9V
- Power Supply Rejection Ratio (PSRR)
- 66dB@(120Hz)
- Voltage - Supply
- 35V
- Voltage Dropout
- 2V@(1A)
- standby current
- 5mA
Order codes
1- L7809LCSC C2843719
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | IN | Power in |
| 2 | GND | Power in |
| 3 | OUT | Power out |
Open-source boards using it
All 60- 2 layers231.1 × 106.7 mm

- 2 layers100 × 100 mm

- 2 layers

Alim10o
acmo0/PedalBoard-Power-Supply-Diy
This is a description of pedalboard power supplies that I designed an made. I use this power supplies, they are fully working. Pay attention : they are made for 230VAC.
110 parts14GPL-3.0 - 4 layers66.1 × 75.8 mm

Stm audio board V3
Papproni/Digital_guitar_effect
This repostiroy is created to work on a digital guitar effect which makes use of DSP algorythms, and hardware.
149 parts10MIT - 2 layers212.3 × 100 mm

- 2 layers47 × 81.5 mm

- 2 layers126 × 66.5 mm

- 2 layers100 × 100 mm

Power supply
SNURocketTeamHanaro/hanaro-daq
A simple, low-cost, crude data acquisition system for combustion test of solid rocket motor.
38 parts3GPL-3.0
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<iframe src="https://pcbkit.io/embed/parts/puolop/L7809" title="L7809 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/puolop/L7809.jpg" alt="L7809" width="1200" height="900">[](https://pcbkit.io/parts/puolop/L7809)Questions
Is there a KiCad symbol and footprint for the L7809?
Yes. The symbol is Regulator_Linear:L7809 and the footprint EasyEDA_Cloud:TO-220-3_L10.0-W4.5-P2.54-L-1, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the L7809?
TO-220, with 3 pins. Its footprint is drawn on this page.
Where is the L7809 datasheet?
PUOLOP publishes it: the Datasheet link on this page opens it.
Where can I order the L7809?
JLCPCB lists it as part C2843719, with 50 in stock; the sellers' links on this page open their listings.
What can replace the L7809?
Parts like it in the library: the CJ7809 by Jiangsu Changjing Electronics Technology (CJ), the CJ7909 by Jiangsu Changjing Electronics Technology (CJ), the BA90DD0T by ROHM Semiconductor and the L7809ABD2T-TR by STMicroelectronics. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the L7809?
60 boards in 43 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8CJ7809
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TO-220-3-20℃~+125℃@(Ta) 1 1.5A 1.5V@(1A) 190uV 25V 5mA 60dB@(120Hz) 9V Fixed Negative Over Current Protection、Short Circuit Protection、Thermal shutdown TO-220-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSHGSEMIVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsBA90DD0WHFP-TR
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