Datasheet > SG7818

SG7818

更新时间： 2024-11-22 14:51:51

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
12页	767K
描述
The SG78xxA/SG78xx series of positive regulators offer self-contained, fixed-voltage capability wi

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SG7818 数据手册

SG78xxA/78xx

Positive Fixed Voltage Regulator

Description

Features

Output Voltage Set Internally to ±1.5% on SG78xxA

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.

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

High Reliability Features

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.

Available to MIL-STD - 883, ¶ 1.2.1

MIL-M38510/10702BXA - SG7805T-JAN

MIL-M38510/10703BXA - SG7812T-JAN

MIL-M38510/10704BXA - SG7815T-JAN

MIL-M38510/10706BYA - SG7805K-JAN

MIL-M38510/10707BYA - SG7812K-JAN

MIL-M38510/10708BYA - SG7815K-JAN

MSC-AMSG level “S” Processing Available

Available to DSCC

-Standard Microcircuit Drawing (SMD)

Circuit Schematic

Output stage and SOA circuit

CURRENT REF

V_IN

R₁

R₁₃

Q₂₃

R₈

R₃

Q₁₁

R₂

Z₂

Z₃

Q₁

Q₉

Q₂₂

Q₁₀

BANDGAP

REFERENCE

Q₂₄

Q₂

Q₂₅

R₁₄

REMOTE

SHUTDOWN

R₂₀

Q₂₆

R₁₉

Q₂₈

R₁₂

Q₂₇

R₁₅

R₂₈

R₂₅

R₂₆

R₁₀

Q₁₇

Q₁₆

Q₁₈

Q_19A

Q_19B

THERMAL

Q₃

R₂₇

SHUTDOWN

R₁₈

V_OUT

Q₁₂

R₄

R₅

R₁₁

Q₁₃

Q₁₅

ENABLE

*V_OS

Q₆

R₂₃

R₇

Q₁₄

R_22A

Q₄

Q₇

Q₈

F₁

R_22B

R_22C

Z₁

F₄

C₂

C₁

R₂₄

F₂

F₃

F₄

R₉

R_22D

R_22E

R₆

GND

Q₅

* For normal operation, the (V_OS) sense pin must be externally connected to the load

Figure 1 · Circuit Schematic

January 2015 Rev. 1.5

www.microsemi.com

12 3 4 5 6 7...12

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与SG7818相关器件

型号	品牌	获取价格	描述	数据表
SG7818A	SECOS	获取价格	Positive Voltage Regulator
SG7818A	MICROCHIP	获取价格	The SG78xxA/SG78xx series of positive regulators offer self-contained, fixed-voltage capab
SG7818ACR	MICROSEMI	获取价格	Fixed Positive Standard Regulator, 18VBIPolar, MBFM2, METAL CAN, TO-66, 3 PIN
SG7818ACT	MICROSEMI	获取价格	Fixed Positive Standard Regulator, 18VBIPolar, MBCY3, METAL CAN, TO-39, 3 PIN
SG7818AG	MICROSEMI	获取价格	Fixed Positive Standard Regulator, 18VBIPolar, HERMETIC SEALED, TO-257, 3 PIN
SG7818AG/883B	MICROSEMI	获取价格	Fixed Positive Standard Regulator, 18VBIPolar, HERMETIC SEALED, TO-257, 3 PIN
SG7818AIG/883B	MICROSEMI	获取价格	Fixed Positive Standard Regulator, 18VBIPolar, HERMETIC SEALED, TO-257, 3 PIN
SG7818AK	MICROSEMI	获取价格	Fixed Positive Standard Regulator, 18VBIPolar, MBFM2, METAL CAN, TO-3, 3 PIN
SG7818AR/883B	MICROSEMI	获取价格	Fixed Positive Standard Regulator, 18VBIPolar, MBFM2, METAL CAN, TO-66, 3 PIN
SG7818AT/883B	MICROSEMI	获取价格	Fixed Positive Standard Regulator, 18VBIPolar, MBCY3, METAL CAN, TO-39, 3 PIN

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