Datasheet > SG1842L/883B

SG1842L/883B

更新时间： 2024-11-30 22:12:07

品牌	Logo	应用领域
美高森美 - MICROSEMI		控制器
页数	文件大小	规格书
14页	224K
描述
CURRENT MODE PWM CONTROLLER

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中文翻译

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SG1842L/883B 数据手册

LIN DOC #: 1842

SG1842/SG1843 Series

U R R E N T M O D E P W M C O N T R O L L E R

T H E I N F I N I T E P O W E R O F I N N O V A T I O N

P R O D U C T I O N D A T A S H E E T

DESCRIPTION

KEY FEATURES

■ OPTIMIZED FOR OFF-LINE CONTROL

■ LOW START-UP CURRENT (<1mA)

■ AUTOMATIC FEED FORWARD

COMPENSATION

■ TRIMMED OSCILLATOR DISCHARGE

The SG1842/43 family of control IC's

provides all the necessary features to

implement off-line fixed frequency,

current-mode switching power supplies

with a minimum number of external

components. Current-mode

architecture demonstrates improved

line regulation, improved load

regulation, pulse-by-pulse current

limiting and inherent protection of the

power supply output switch.

voltage lockout, current limiting

circuitry and start-up current of less

than 1mA.

The totem-pole output is optimized

to drive the gate of a power MOSFET.

The output is low in the off state to

provide direct interface to an N

channel device.

The SG1842/43 is specified for

operation over the full military ambient

temperature range of -55°C to 125°C.

The SG2842/43 is specified for the

industrial range of -25°C to 85°C, and

the SG3842/43 is designed for the

commercial range of ꢁ°C to 7ꢁ°C.

CURRENT

■ PULSE-BY-PULSE CURRENT LIMITING

■ ENHANCED LOAD RESPONSE

CHARACTERISTICS

■ UNDER-VOLTAGE LOCKOUT WITH 6V

HYSTERESIS (SG1842 only)

■ DOUBLE-PULSE SUPPRESSION

■ HIGH-CURRENT TOTEM-POLE OUTPUT

The bandgap reference is trimmed to

1ꢀ over temperature. Oscillator

discharge current is trimmed to less

than 1ꢁꢀ. The SG1842/43 has under-

(1AMP PEAK)

■ INTERNALLY TRIMMED BANDGAP

REFERENCE

■ 500KHZ OPERATION

■ UNDERVOLTAGE LOCKOUT

SG1842 - 16 volts

PRODUCT HIGHLIGHT

SG1843 - 8.4 volts

■ LOW SHOOT-THROUGH CURRENT <75mA

TYPICAL APPLICATION OF SG3842 IN A FLYBACK CONVERTER

OVER TEMPERATURE

HIGH RELIABILITY FEATURES

■ AVAILABLE TO MIL-STD-883B AND DESC

INPUT

SMD

■ SCHEDULED FOR MIL-M38510 QPL LISTING

■ RADIATION DATA AVAILABLE

V_CC

■

LINFINITY LEVEL "S" PROCESSING AVAILABLE

SG3842

PACKAGE ORDER INFORMATION

Plastic DIP

8-pin

Plastic DIP

14-pin

Plastic SOIC

8-pin

Plastic SOIC

14-pin

Ceramic DIP

8-pin

Ceramic DIP

14-pin

Cer. Flatpack Ceramic LCC

1ꢁ-pin 2ꢁ-pin

T_A(°C)

0 to 70

SG3842M

SG3842N

SG3842DM

SG3842D

SG3842Y

SG3843Y

SG2842Y

SG2843Y

SG1842Y

SG1843Y

SG3842J

SG3843J

SG2842J

SG2843J

SG1842J

SG1843J

—

SG3843M

SG3843N

SG3843DM

SG3843D

SG2842M

SG2842N

SG2842DM

SG2842D

—

-25 to 85

-55 to 125

MIL-STD/883

DESC

SG2843M

SG2843N

SG2843DM

SG2843D

—

SG1842L

SG1843L

SG1842Y/883B SG1842J/883B

SG1843Y/883B SG1843J/883B

SG1842L/883B

SG1843L/883B

SG1842Y/DESC SG1842J/DESC SG1842F/DESC SG1842L/DESC

SG1843Y/DESC SG1843J/DESC SG1843F/DESC SG1843L/DESC

Note: All surface-mount packages are available in Tape & Reel.

F O R F U R T H E R I N F O R M AT I O N C A L L ( 7 1 4 ) 8 9 8 - 8 1 2 1

Rev. 1.6 4/00

11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841

12 3 4 5 6 7...14

中文翻译

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与SG1842L/883B相关器件

型号	品牌	获取价格	描述	数据表
SG1842L/883B-TR	MICROSEMI	获取价格	Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, CQCC20, CERAMI
SG1842L/DESC	MICROSEMI	获取价格	CURRENT MODE PWM CONTROLLER
SG1842L/DESC-TR	MICROSEMI	获取价格	Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, CQCC20
SG1842LT	MICROSEMI	获取价格	Switching Regulator/Controller, Current-mode, 0.2A, 500kHz Switching Freq-Max, BIPolar, CQ
SG1842L-TR	MICROSEMI	获取价格	Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, CQCC20, HERMET
SG1842L-TR/883B	MICROSEMI	获取价格	Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, CQCC20
SG1842L-TR/DESC	MICROSEMI	获取价格	Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, CQCC20, HERMETIC SEALED
SG1842Y	MICROSEMI	获取价格	CURRENT MODE PWM CONTROLLER
SG1842Y/883B	MICROSEMI	获取价格	CURRENT MODE PWM CONTROLLER
SG1842Y/DESC	MICROSEMI	获取价格	CURRENT MODE PWM CONTROLLER

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