描述 Description

The SG78xxA/SG78xx series of positive regulators offer self-contained, fixed-voltage capability with up to 1.5 A of load current and input voltage up to 50 V (SG78xxA series only). These units feature a unique on-chip trimming system to set the output voltages to within ±1.5% of nominal on the SG78xxA series with ±2.0% on the SG78xx series. The SG78xxA versions also offer much improved line and load regulation characteristics. Utilizing an improved bandgap reference design, problems such as drift in output voltage and large changes in the line and load regulation, that are normally associated with the Zener diode references have been eliminated. All protective features of thermal shutdown, current limiting, and safe-area control have been designed into these units and since these regulators require only a small output capacitor for satisfactory performance, ease of application is assured. Although designed as fixed-voltage regulators, the output voltage can be increased through the use of a simple voltage divider. The low quiescent drain current of the device ensures good regulation when this method is used. Product is available in hermetically sealed TO-257 (both case grounded ‘G’ and isolated ‘IG’), TO-3, TO-39 and leadless chip carrier (LCC) packages.Microchip Ordering Part? Standard Microcircuit Drawing (SMD)?SG7815AG-DESC Cross Reference 5962-8855301TASG7815AG-DESC Cross Reference 5962-8855301TXSG7815AIG-DESC Cross Reference 5962-8855301UASG7815AIG-DESC Cross Reference 5962-8855301UXSG7815AK-DESC Cross Reference 5962-8855301YASG7815AK-DESC Cross Reference 5962-8855301YXSG7815AL-DESC Cross Reference 5962-88553012ASG7815AL-DESC Cross Reference 5962-88553012XSG7815AT-DESC Cross Reference 5962-8855301XASG7815AT-DESC Cross Reference 5962-8855301XX

特性 Features

Output Voltage Set Internally to ±1.5% on SG78xxA
Input Voltage Range to 50 V max on SG78xxA
2 V Input-Output Differential
Excellent Line and Load Regulation
Fold back Current Limiting
Thermal Overload Protection
Voltages Available: 5 V, 12 V, 15 V
Contact Factory for Other Voltage Options
Available in Surface Mount Package

簡介

SG7815A屬于集成電路（IC）的線性+開關(guān)穩(wěn)壓器。由制造生產(chǎn)的SG7815A穩(wěn)壓器 - 線性線性穩(wěn)壓器用于提供穩(wěn)定的輸出電壓，無論負(fù)載電流、輸入電壓或環(huán)境因素如何變化，這些輸出電壓通常都要保持不變。它們的工作原理要求輸入電壓維持在高于所需的輸出電壓，而且要超出某個最小量，并且在工作時會將輸入端的任何多余電壓轉(zhuǎn)換為熱量。對于大多數(shù)應(yīng)用而言，雖然這種穩(wěn)壓器的效率低于開關(guān)模式的穩(wěn)壓器，但它們通常更適合對噪聲高度敏感的應(yīng)用。