Part Number: L7812AC

Function: 1.5A, 12V, Voltage Regulator

Package: TO-220 Type

Manufacturer: STMicroelectronics

Images:

Description

This is 12v, Positive voltage regulator. The L7812AC series of three-terminal positive regulators is available in TO-220, TO-220FP, D²PAK and DPAK packages and several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type embeds internal current limiting, thermal shutdown and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1 A output current. Although designed primarily as fixed voltage regulators, these devices can be used with […]

Features

1. Output current up to 1.5 A

2. Output voltages of 12 V

3. Thermal overload protection

4. Short circuit protection

5. Output transition SOA protection

6. 2 % output voltage tolerance (A version)

7. Guaranteed in extended temperature range (A version)

L7812AC PDF Datasheet

This post describes for the Voltage Regulator.

The part number is 4274GV50, TLE4274GV50.

The function of this transistor is Low-Drop Voltage Regulator.

The manufacturer of this parts is Siemens.

See the preview image and the 4274GV50 Datasheet PDF file for more information.

Description

This is Low-Drop Voltage Regulator. The 4274GV50 is a low-drop voltage regulator in a
TO220 package. The IC regulates an input voltage up to 40 V to VQrated = 5.0 V (V50), 8.5 V (V85) and 10 V (V10). The maximum output current is 400 mA. The IC is short-circuit proof and incorporates temperature protection that disables the IC at over temperature.

The control amplifier compares a reference voltage to a voltage that is proportional to the
output voltage and drives the base of the series transistor via a buffer. Saturation control
as a function of the load current prevents any oversaturation of the power element.

Features:

1. Output voltage tolerance ≤ ± 4 %

2. Low-drop voltage

3. Very low current consumption

4. Short-circuit proof Reverse polarity proof

5. Suitable for use in automotive electronics

[…]

4274GV50 PDF Datasheet