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L7812CV on a board, in 3D

L7812CV

STMicroelectronics

0℃~+125℃@(Tj) 1 12V 1A 25V 2V@(1A) 60dB@(120Hz) 8mA Fixed Over Current Protection Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS

Extended
DatasheetJLCPCBLCSCst/L7812CV
Category
Voltage Regulators Linear, Low Drop Out (LDO) Regulators
Package
TO-220
Pins
3

Overview

The L7812CV is a voltage Regulators Linear, Low Drop Out (LDO) Regulator made by STMicroelectronics in a TO-220 package with 3 pins. 0℃~+125℃@(Tj) 1 12V 1A 25V 2V@(1A) 60dB@(120Hz) 8mA Fixed Over Current Protection Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.

PCBKit's library has its KiCad symbol (Regulator_Linear:L7812, from KiCad's library) and its footprint (EasyEDA_Pro:to-220-3_l10.0-w4.5-p2.54-t, from EasyEDA Pro), ready for a KiCad board. 10,127 are in stock at JLCPCB (part C105651). 13 open-source boards in 11 repositories on GitHub use it.

Symbol

IN1GND2OUT3
Regulator_Linear:L7812From KiCad's library

Footprint

123
EasyEDA_Pro:to-220-3_l10.0-w4.5-p2.54-tFrom EasyEDA Pro

From the datasheet

8
Supply, absolute maximum
35 V · VI, absolute maximum for VO = 5 to 18 V · p. 5
Junction, hottest
125 °C · maximum operating junction temperature, L78xxC · p. 5
Takes working
8 mA · VI, max quiescent current, TJ = 25 °C · p. 19
Gives
1.5 A · maximum output current · p. 1
Output
12 V · typical fixed output voltage, TJ = 25 °C · p. 19
Dropout
2 V · typical dropout voltage, IO = 1 A, TJ = 25 °C · p. 19
Junction to case (TO-220)
5 K/W · junction-case thermal resistance · p. 5
Junction to air (TO-220)
50 K/W · junction-ambient thermal resistance · p. 5

What it is and has

5
Protection
Thermal overload protection · p. 1
Protection
Short circuit protection · p. 1
Protection
Output transition SOA protection · p. 1
Protection
Thermal overload shutdown · p. 23
Protection
Internal short-circuit current limiting · p. 23

Around it

1
cap 0.33 µF or larger
between input and ground; Input bypass capacitor; tantalum, mylar or another type with low high-frequency impedance. Mount directly across input terminals with shortest possible leads. Recommended for long connections to the supply filter or large output load capacitance. · p. 23

Specifications

22
ParameterConditionsAs printedPage
DC input voltage VIfor VO= 5 to 18 Vmax 35 V5
Storage temperature range TSTGmin -65 · max 150 °C5
Operating junction temperature range TOPL78xxCmin 0 · max 125 °C5
Thermal resistance junction-case RthJCTO-220max 5 °C/W5
Thermal resistance junction-ambient RthJATO-220max 50 °C/W5
Output voltage VOTJ = 25 °C; VI = 19 V, IO = 500 mA, CI = 0.33 uF, CO = 0.1 uFmin 11.5 · typ 12 · max 12.5 V19
Output voltage VOIO = 5 mA to 1 A, VI = 14.5 to 25 V; TJ = 0 to 125 °Cmin 11.4 · typ 12 · max 12.6 V19
Output voltage VOIO = 1 A, VI = 25 to 27 V, TJ = 25 °Cmin 11.4 · typ 12 · max 12.6 V19
Line regulation ∆VO(1)VI = 14.5 to 30 V, TJ = 25 °C; IO = 500 mAmax 240 mV19
Line regulation ∆VO(1)VI = 16 to 22 V, TJ = 25 °C; IO = 500 mAmax 120 mV19
Load regulation ∆VO(1)IO = 5 mA to 1.5 A, TJ = 25 °C; VI = 19 Vmax 240 mV19
Load regulation ∆VO(1)IO = 250 to 750 mA, TJ = 25 °C; VI = 19 Vmax 120 mV19
Quiescent current IdTJ = 25 °C; VI = 19 V, IO = 500 mAmax 8 mA19
Quiescent current change ∆IdIO = 5 mA to 1 A; VI = 19 V, TJ = 0 to 125 °Cmax 0.5 mA19
Quiescent current change ∆IdVI = 14.5 to 30 V; IO = 500 mA, TJ = 0 to 125 °Cmax 1 mA19
Output voltage drift ∆VO/∆TIO = 5 mA; VI = 19 V, TJ = 0 to 125 °Ctyp -1 mV/°C19
Output noise voltage eNB = 10 Hz to 100 kHz, TJ = 25 °C; VI = 19 V, IO = 500 mAtyp 75 uV/VO19
Supply voltage rejection SVRVI = 15 to 25 V, f = 120 Hz; IO = 500 mA, TJ = 0 to 125 °Cmin 55 dB19
Dropout voltage VdIO = 1 A, TJ = 25 °Ctyp 2 V19
Output resistance ROf = 1 kHz; VI = 19 V, IO = 500 mA, TJ = 0 to 125 °Ctyp 18 mΩ19
Short circuit current IscVI = 35 V, TJ = 25 °Ctyp 0.35 A19
Short circuit peak current IscpTJ = 25 °C; VI = 19 Vtyp 2.2 A19

Ordering codes, by the datasheet

4
L7812CV
TO-220 (single gauge) · 12 V output, single gauge · p. 52
L7812CV-DG
TO-220 (dual gauge) · 12 V output, dual gauge · p. 52
L7812CD2T-TR
D²PAK · 12 V output · p. 52
L7812CP
TO-220FP · 12 V output · p. 52

Parameters

18
Dropout Voltage
2V@(1A)
Features
Short Circuit Protection
Junction Temperature(Max)
125℃
Maximum Input Voltage
35V
Number of Outputs
1
Operating Temperature
0℃~+125℃@(Tj)
Output Configuration
Positive
Output Current
1.5A
Output Polarity
Positive
Output Type
Fixed
Output Voltage
12V
Power Supply Rejection Ratio (PSRR)
60dB@(120Hz)
Thermal Resistance(Junction to Ambient)
50℃/W
Thermal Resistance(Junction to Case)
5℃/W
Voltage - Supply
25V
Voltage - Supply(Absolute Max)
35V
Voltage Dropout
2V
standby current
8mA

Order codes

1

Pinout

3
The pins of the L7812CV
PinNameType
1INPower in
2GNDPower in
3OUTPower out

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Questions

Is there a KiCad symbol and footprint for the L7812CV?

Yes. The symbol is Regulator_Linear:L7812 and the footprint EasyEDA_Pro:to-220-3_l10.0-w4.5-p2.54-t, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the L7812CV?

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

Where is the L7812CV datasheet?

STMicroelectronics publishes it: the Datasheet link on this page opens it.

Where can I order the L7812CV?

JLCPCB lists it as part C105651, with 10,127 in stock; the sellers' links on this page open their listings.

What can replace the L7812CV?

Parts like it in the library: the L7812ACV by STMicroelectronics, the NJM7812FA by Nisshinbo Micro Devices Inc., the KIA7812AP-U/P by KEC Semicon and the CJ7812 by Jiangsu Changjing Electronics Technology (CJ). Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the L7812CV?

13 boards in 11 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8