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L7812ABV-DG

Name: L7812ABV-DG
Rating: 4.7 (12 reviews)

IC REG LINEAR 12V 1.5A TO220

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製造商。部分 #L7812ABV-DG
包 TO-220
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規格

Package	Tube
ProductStatus	Active
OutputConfiguration	Positive
OutputType	Fixed
NumberofRegulators	1
Voltage-Input(Max)	35V
Voltage-Output(Min/Fixed)	12V
VoltageDropout(Max)	2V @ 1A (Typ)
Current-Output	1.5A
Current-Quiescent(Iq)	6 mA
PSRR	60dB (120Hz)
ProtectionFeatures	Over Temperature, Short Circuit
OperatingTemperature	-40°C ~ 125°C
MountingType	Through Hole
Package/Case	TO-220-3

概述

Description

L7812ABV-DG is a fixed +12 V positive voltage regulator in ST’s L78xx family. It regulates a higher DC input down to a stable 12 V output. The ABV-DG variant denotes a specific product/package variant (DG).
Key points:
- Output: +12 V fixed
- Current: typically about 1 A (some variants up to 1.5 A with adequate heat sinking)
- Input voltage range: up to around 30–35 V; dropout ~2 V at rated current
- Protection: thermal shutdown, current limiting, safe-operating-area protection
- Pinout (common TO-220 style): Pin 1 = Input, Pin 2 = Ground, Pin 3 = Output
- Stability: requires input and output decoupling capacitors (e.g., 0.33 µF input, 0.1 µF output; larger electrolytics for transients)
- Applications: simple, low-cost 12 V regulation for microcontrollers, sensors, and other circuits
Note: check the exact datasheet for the DG package variant to confirm current rating, input range, and pinout.

Features

L7812ABV-DG features (concise):
- Fixed 12 V output
- Maximum output current: up to ~1.5 A
- Input voltage range up to about 35 V
- Low dropout around 2 V at 1 A
- 3-terminal regulator in DG package (TO-220AB); tab tied to output
- Internal current limit and thermal/shutdown protection
- Short-circuit protection
- Good line and load regulation
- Wide operating temperature (industrial/automotive range: roughly -40°C to +125°C)
- Requires external input and output capacitors for stability and transient response
Note: Use appropriate input/output capacitors as recommended in the datasheet.

Package

TO-220 (through-hole) three-terminal package.

Pinout

- Pin count: 3 pins
- Function: Fixed positive 12V linear voltage regulator (L7812ABV). Pinout (facing the front): left = Vin, middle = Ground, right = Vout (regulated +12V).

Manufacturer

Manufacturer: STMicroelectronics.
Company type: A global semiconductor company that designs and manufactures integrated circuits and discrete semiconductor products for automotive, industrial, consumer, and communications markets.

Application

Common applications for L7812ABV-DG:
- Fixed +12V linear regulator for DC power supplies.
- Power rails for microcontrollers, DSPs, analog/digital circuits in consumer electronics, telecom, audio/video gear.
- Automotive and industrial equipment needing a stable +12V from a higher input, with proper heat sinking.
- Prototyping, DIY projects, educational kits needing a simple, low-noise +12V regulator.

Equivalent

Equivalent parts to L7812ABV-DG (12 V fixed regulator, TO-220) include:
- LM7812 (TI/National)
- MC7812 (ON Semiconductor)
- KA7812
- NCP7812 (ON Semi)
- UA7812 (Unisonic)
- UTC7812
- L7812CV (ST)
They share the same pinout (IN–GND–OUT) and ~1.5 A capability; verify exact current/thermal specs in datasheets for cross-compatibility.