Skip to the content
PCBKitNew board
CJ7809 on a board, in 3D

CJ7809

Jiangsu Changjing Electronics Technology (CJ)

-25℃~+125℃@(Tj) 1 1.5A 27V 2V@(1A) 4.3mA 70dB@(120Hz) 9V Fixed Positive TO-252-2(DPAK) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS

Extended
DatasheetJLCPCBLCSCcj/CJ7809
Category
Voltage Regulators Linear, Low Drop Out (LDO) Regulators
Package
TO-220
Pins
3

Overview

The CJ7809 is a voltage Regulators Linear, Low Drop Out (LDO) Regulator made by Jiangsu Changjing Electronics Technology (CJ) in a TO-220 package with 3 pins. -25℃~+125℃@(Tj) 1 1.5A 27V 2V@(1A) 4.3mA 70dB@(120Hz) 9V Fixed Positive TO-252-2(DPAK) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.

PCBKit's library has its KiCad symbol (Pinmap_Generic:Regulator_Linear_1IN_2GND_3OUT, from PCBKit's generic symbols) and its footprint (EasyEDA_Cloud:TO-220-3_L10.0-W4.5-P2.54-L-1, from EasyEDA), ready for a KiCad board. 6,948 are in stock at JLCPCB (part C177737).

Symbol

IN1OUT3GND2
Pinmap_Generic:Regulator_Linear_1IN_2GND_3OUTFrom PCBKit's generic symbols

Footprint

123
EasyEDA_Cloud:TO-220-3_L10.0-W4.5-P2.54-L-1From EasyEDA

Parameters

15
Dropout Voltage
2V@(1A)
Features
Short Circuit Protection
Maximum Input Voltage
35V
Noise
60uVrms
Number of Outputs
1
Operating Temperature
0℃~+150℃@(Tj)
Output Configuration
Positive
Output Current
1.5A
Output Polarity
Positive
Output Type
Fixed
Output Voltage
9V
Power Supply Rejection Ratio (PSRR)
70dB@(120Hz)
Voltage - Supply
35V
Voltage Dropout
2V@(1A)
standby current
4.3mA

Order codes

2

Pinout

3
The pins of the CJ7809
PinNameType
1INPower in
2GNDPower in
3OUTPower out

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/cj/CJ7809" title="CJ7809 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>
A picture
<img src="https://pcbkit.io/embed/parts/cj/CJ7809.jpg" alt="CJ7809" width="1200" height="900">
A picture that opens the part, for a README
[![CJ7809](https://pcbkit.io/embed/parts/cj/CJ7809.jpg?size=s)](https://pcbkit.io/parts/cj/CJ7809)

Questions

Is there a KiCad symbol and footprint for the CJ7809?

Yes. The symbol is Pinmap_Generic:Regulator_Linear_1IN_2GND_3OUT 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 CJ7809?

TO-220, with 3 pins. Its footprint is drawn on this page.

Where is the CJ7809 datasheet?

Jiangsu Changjing Electronics Technology (CJ) publishes it: the Datasheet link on this page opens it.

Where can I order the CJ7809?

JLCPCB lists it as part C177737, with 6,948 in stock; the sellers' links on this page open their listings.

What can replace the CJ7809?

Parts like it in the library: the L7809 by PUOLOP, 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.

Parts like it

8