Skip to the content
PCBKitNew board
LM7805CT on a board, in 3D

LM7805CT

Texas Instruments

0℃~+70℃@(Ta) 1 1A 20V 2V@(1A) 40uV 5V 62dB@(120Hz) 8mA Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS

Extended
DatasheetJLCPCBLCSCti/LM7805CT
Category
Voltage Regulators Linear, Low Drop Out (LDO) Regulators
Package
TO-220
Pins
4

Overview

The LM7805CT is a voltage Regulators Linear, Low Drop Out (LDO) Regulator made by Texas Instruments in a TO-220 package with 3 pins. 0℃~+70℃@(Ta) 1 1A 20V 2V@(1A) 40uV 5V 62dB@(120Hz) 8mA Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.

PCBKit's library has its KiCad symbol (Regulators:REG3 1IN-2GND-3OUT, from CERN's library) and its footprint (ICs And Semiconductors THD:TO-220-v, from CERN's library), ready for a KiCad board. 123 are in stock at JLCPCB (part C50931). 108 open-source boards in 84 repositories on GitHub use it.

Symbol

GNDIN1GND2OUT3
Regulators:REG3 1IN-2GND-3OUTFrom CERN's library

Footprint

123
ICs And Semiconductors THD:TO-220-vFrom CERN's library

From the datasheet

11
Supply, absolute maximum
35 V · INPUT, absolute maximum DC input voltage · p. 4
Junction, hottest
150 °C · maximum junction temperature · p. 4
Takes working
8 mA · max quiescent current, TJ = 25°C, IO ≤ 1 A · p. 6
Takes at most
8.5 mA · max quiescent current over temperature, IO ≤ 1 A · p. 6
Gives
1.5 A · output current with adequate heat sinking · p. 12
Current limit
2.4 A · typical internal current limit · p. 12
Output
5 V · typical output voltage, TJ = 25°C, 5 mA ≤ IO ≤ 1 A · p. 6
Dropout
2 V · typical dropout, TJ = 25°C, IO = 1 A · p. 6
Junction to air (NDE (TO-220))
23.9 K/W · junction-to-ambient thermal resistance · p. 4
Junction to board (NDE (TO-220))
5.3 K/W · junction-to-board thermal resistance · p. 4
Junction to case (NDE (TO-220))
16.7 K/W · junction-to-case top thermal resistance · p. 4

What it is and has

2
Output capacitor
Not required for stability · p. 1
Protection
Current limiting, thermal shutdown, safe area protection · p. 12

Around it

2
cap 0.22-μF
between INPUT and GND; Electrical-characteristics measurement capacitor. · p. 6
cap 0.1-μF
between OUTPUT and GND; Electrical-characteristics measurement capacitor; optional output bypass improves transient response. · p. 6

Specifications

34
ParameterConditionsAs printedPage
DC input voltageOver operating free-air temperature rangemax 35 V4
Maximum junction temperaturemax 150 °C4
Lead temperature (soldering, 10 sec.)Lead temperature 1,6 mm (1/16 in) from case for 10 s; TO-220max 230 °C4
Storage temperaturemin -65 · max 150 °C4
Electrostatic discharge V(ESD)Human-body model (HBM); ±2000 Vmin -2000 · max 2000 V4
Junction-to-ambient thermal resistance RθJANDE (TO-220), 3 PINStyp 23.9 °C/W4
Junction-to-case (top) thermal resistance RθJC(top)NDE (TO-220), 3 PINStyp 16.7 °C/W4
Junction-to-board thermal resistance RθJBNDE (TO-220), 3 PINStyp 5.3 °C/W4
Junction-to-top characterization parameter ψJTNDE (TO-220), 3 PINStyp 3.2 °C/W4
Junction-to-board characterization parameter ψJBNDE (TO-220), 3 PINStyp 5.3 °C/W4
Junction-to-case (bottom) thermal resistance RθJC(bot)NDE (TO-220), 3 PINStyp 1.7 °C/W4
Output voltage VOLM7805; TJ = 25°C, 5 mA ≤ IO ≤ 1 Amin 4.8 · typ 5 · max 5.2 V6
Output voltage VOLM7805; 0°C ≤ TJ ≤ 125°C; PD ≤ 15 W, 5 mA ≤ IO ≤ 1 A; 7.5 V ≤ VIN ≤ 20 Vmin 4.75 · max 5.25 V6
Line regulation ΔVOLM7805; IO = 500 mA; TJ = 25°C; 7V ≤ VIN ≤ 25Vtyp 3 · max 50 mV6
Line regulation ΔVOLM7805; IO = 500 mA; over temperature; 8V ≤ VIN ≤ 20Vmax 50 mV6
Line regulation ΔVOLM7805; IO ≤ 1 A; TJ = 25°C; 7.5V ≤ VIN ≤ 20Vmax 50 mV6
Line regulation ΔVOLM7805; IO ≤ 1 A; over temperature; 8V ≤ VIN ≤ 12Vmax 25 mV6
Load regulation ΔVOLM7805; TJ = 25°C; 5 mA ≤ IO ≤ 1.5 Atyp 10 · max 50 mV6
Load regulation ΔVOLM7805; TJ = 25°C; 250 mA ≤ IO ≤ 750 mAmax 25 mV6
Load regulation ΔVOLM7805; over temperature, 5 mA ≤ IO ≤ 1 Amax 50 mV6
Quiescent current IQLM7805; IO ≤ 1 A; TJ = 25°Cmax 8 mA6
Quiescent current IQLM7805; IO ≤ 1 A; over temperaturemax 8.5 mA6
Quiescent current change ΔIQLM7805; 0°C ≤ TJ ≤ 125°C, 5 mA ≤ IO ≤ 1 Atyp 0.5 mA6
Quiescent current change ΔIQLM7805; 7 V ≤ VIN ≤ 20 V; TJ = 25°C, IO ≤ 1 Amax 1 mA6
Quiescent current change ΔIQLM7805; 7 V ≤ VIN ≤ 20 V; over temperature, IO ≤ 500 mAmax 1 mA6
Output noise voltage VNLM7805; TA = 25°C, 10 Hz ≤ f ≤ 100 kHztyp 40 uV6
Ripple rejectionLM7805; f = 120 Hz; 8 V ≤ VIN ≤ 18 V; TJ = 25°C, IO ≤ 1 Amin 62 · typ 80 dB6
Ripple rejectionLM7805; f = 120 Hz; 8 V ≤ VIN ≤ 18 V; over temperature, IO ≤ 500 mAmin 62 dB6
Dropout voltageLM7805; TJ = 25°C, IO = 1 Atyp 2 V6
Output resistanceLM7805; f = 1 kHztyp 8 mΩ6
Short-circuit current ROLM7805; TJ = 25°Ctyp 2.1 A6
Peak output currentLM7805; TJ = 25°Ctyp 2.4 A6
Average TC of VOUTLM7805; over temperature, IO = 5 mAtyp -0.6 mV/°C6
Input voltage required to maintain line regulation VINLM7805; TJ = 25°C, IO ≤ 1 Amin 7.5 V6

Pins, by the datasheet

3
1 INPUT
Input voltage pin. · p. 3
2 GND
Ground pin. · p. 3
3 OUTPUT
Output voltage pin. · p. 3

Parameters

19
Current - Supply(Max)
8.5mA
Current Limit
2.4A
Features
Over Current Protection
Junction Temperature(Max)
150℃
Noise
40uV
Number of Outputs
1
Operating Temperature
0℃~+70℃@(Ta)
Output Configuration
Positive
Output Current
1.5A
Output Type
Fixed
Output Voltage
5V
Power Supply Rejection Ratio (PSRR)
62dB@(120Hz)
Thermal Resistance(Junction to Ambient)
23.9℃/W
Thermal Resistance(Junction to Board)
5.3℃/W
Thermal Resistance(Junction to Case)
16.7℃/W
Voltage - Supply
20V
Voltage - Supply(Absolute Max)
35V
Voltage Dropout
2V
standby current
8mA

Order codes

1

Pinout

3
The pins of the LM7805CT
PinNameType
1INInput
2GNDPower in
3OUTPower in

Open-source boards using it

All 108
  • 2 layers173 × 85 mmAudio board, the printed circuit board in 3D

    Audio board

    EleonoreMizo/pedalevite

    Pédale Vite — DIY multi-FX pedalboard for guitar/bass/etc.

    268 parts101WTFPL
  • 2 layers169.3 × 128 mmPSU PCB, the printed circuit board in 3D

    PSU PCB

    ThomasVDD/SmartSupply

    SmartSupply is a digital battery powered lab powersupply. It is Arduino compatible and can be controlled via PC over USB.

    134 parts96
  • 2 layersT41-Main+RF board V012, the printed circuit board in 3D

    T41-Main+RF board V012

    DRWJSCHMIDT/T41

    This is the repository for the officially released V10, V11, and V12 versions of the T41 Software Defined Transceiver hardware and kits.

    255 parts66
  • 4 layers97.6 × 145.1 mmAnalog and ad9958, the printed circuit board in 3D

    Analog and ad9958

    balmerdx/BalmerDX_VNA

    Vector Network Analyzer 10 KHz - 180 MHz

    226 parts26BSD-2-Clause
  • 2 layers68 × 89 mmParanoiaBox, the printed circuit board in 3D

    ParanoiaBox

    profdc9/ParanoiaBox

    A standalone elliptic curve/AES file encryption and decryption device

    60 parts17
  • 2 layers100 × 49.7 mmNano PB, the printed circuit board in 3D

    Nano PB

    AntonioMR/Nano-Play-Board

    Placa para experimentar con el Arduino Nano

    142 parts12
  • 4 layers100 × 100 mmT41, the printed circuit board in 3D

    T41

    ai6ym/t41

    T41-EP SDT Files

    234 parts10

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/ti/LM7805CT" title="LM7805CT 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/ti/LM7805CT.jpg" alt="LM7805CT" width="1200" height="900">
A picture that opens the part, for a README
[![LM7805CT](https://pcbkit.io/embed/parts/ti/LM7805CT.jpg?size=s)](https://pcbkit.io/parts/ti/LM7805CT)

Questions

Is there a KiCad symbol and footprint for the LM7805CT?

Yes. The symbol is Regulators:REG3 1IN-2GND-3OUT and the footprint ICs And Semiconductors THD:TO-220-v, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the LM7805CT?

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

Where is the LM7805CT datasheet?

Texas Instruments publishes it: the Datasheet link on this page opens it.

Where can I order the LM7805CT?

JLCPCB lists it as part C50931, with 123 in stock; the sellers' links on this page open their listings.

What can replace the LM7805CT?

Parts like it in the library: the LM7805CT by Shanghai Siproin Microelectronics, the L7905CV-DG by STMicroelectronics, the LM7805CT by HGSEMI and the MIC29500-5.0WT by Microchip Technology. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the LM7805CT?

108 boards in 84 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8