KA7812A

PSFM3 Fixed Positive Standard Regulator, 12V BIPolar, TO-220, 3 PIN
6,460 有效庫存

KA7812A

有效庫存6,460

PSFM3 Fixed Positive Standard Regulator, 12V BIPolar, TO-220, 3 PIN

  • 製造商零件號 # : KA7812A

  • 包裝/封裝: TO-220

  • 製造商: FAIRCHILD

  • 產品分類 : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

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KA7812A 數據表
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詳細說明

The KA78XX/KA78XXA series of three-terminal positive regulator are available in the TO-220/D-PAK package and with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, thermal shut down and safe operating area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.Features• Output Current up to 1A• Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24V• Thermal Overload Protection• Short Circuit Protection• Output Transistor Safe Operating Area Protection

主要特徵

  • Output Current up to 1A
  • Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24V
  • Thermal Overload Protection
  • Short Circuit Protection
  • Output Transistor Safe Operating Area Protection

規格

以下是所選零件的基本參數，涉及零件的特性及其所屬類別。

Rohs Code Yes Part Life Cycle Code Obsolete
Part Package Code SFM Pin Count ! 3
Reach Compliance Code ECCN Code EAR99
HTS Code ! 8542.39.00.01 Adjustability FIXED
Dropout Voltage1-Nom 2 V Input Voltage Absolute-Max 35 V
Input Voltage-Max 30 V Input Voltage-Min 14.8 V
JESD-30 Code R-PSFM-T3 JESD-609 Code e3
Line Regulation-Max 0.12% Load Regulation-Max 0.1%
Number of Functions 1 Number of Outputs 1
Number of Terminals 3 Operating Temperature TJ-Max 125 °C
Operating Temperature TJ-Min Output Current1-Max 1 A
Output Voltage1-Max 12.5 V Output Voltage1-Min 11.5 V
Output Voltage1-Nom 12 V Package Body Material PLASTIC/EPOXY
Package Code TO-220 Package Equivalence Code SIP3,.1TB
Package Shape RECTANGULAR Package Style FLANGE MOUNT
Qualification Status ! Not Qualified Regulator Type FIXED POSITIVE SINGLE OUTPUT STANDARD REGULATOR
Surface Mount ! NO Technology BIPOLAR
Terminal Finish MATTE TIN Terminal Form ! THROUGH-HOLE
Terminal Pitch ! 2.54 mm Terminal Position SINGLE
Voltage Tolerance-Max 4%

數據表 PDF

數據表記錄了器件的特性、絕對最大額定值、應用等，這對於作為器件特定應用的整體指南大有裨益。

初步規格 KA7812A PDF 下載

常見問題解答

What is KA7812A?

The KA7812A is a fixed 12V voltage regulator integrated circuit (IC) manufactured by Fairchild Semiconductor. It is designed to provide a stable 12V output voltage from a higher input voltage source, making it suitable for various power supply and voltage regulation applications.

How Does KA7812A Work?

The KA7812A works by taking an input voltage that is higher than 12V and regulating it down to a stable 12V output. It does this through internal circuitry that compares the output voltage to a reference and adjusts the internal pass transistor to maintain a constant output voltage. This provides a consistent and reliable 12V supply for connected circuitry.

How Many Pins does KA7812A have and What are the Functions of the Pinout Configuration?

The KA7812A is housed in a standard 3-pin TO-220 package. The pinout configuration includes:

  • Input (Vin): The input pin for the higher voltage source.
  • Ground (GND): The ground pin for the regulator.
  • Output (Vout): The regulated 12V output pin.

What are the Pros and Cons of KA7812A?

Pros:

  • Fixed Output Voltage: Provides a stable 12V output, eliminating the need for external voltage regulation circuitry.
  • Simple to Use: Requires minimal external components for basic voltage regulation applications.
  • Thermal Protection: Includes built-in thermal shutdown protection to prevent IC damage due to overtemperature conditions.
  • Cost-Effective: Offers a cost-effective solution for generating a regulated 12V supply.

Cons:

  • Fixed Output Voltage: The fixed 12V output may not be suitable for applications requiring variable output voltage.
  • Heat Dissipation: In applications with high input-output differentials, the regulator may require a heat sink for proper heat dissipation.
  • Power Dissipation: The regulator may dissipate significant power and generate heat, especially when dropping a high input voltage to 12V.

Are There Any Equivalents/Alternatives to KA7812A for Recommendation?

  • The LM7812 from Texas Instruments is an equivalent to the KA7812A with similar electrical characteristics.
  • Alternatives to the KA7812A include the UA7812 from STMicroelectronics and the L7812CV from STMicroelectronics.

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