Datasheet > 电源电路 > 开关式稳压器或控制器> SG1540Y/883B

SG1540Y/883B

更新时间： 2024-02-19 13:03:18

品牌	Logo	应用领域
美高森美 - MICROSEMI		稳压器开关式稳压器或控制器电源电路开关式控制器
页数	文件大小	规格书
6页	82K
描述
OFF-LINE START-UP CONTROLLER

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中文翻译

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技术参数
数据手册

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SG1540Y/883B 技术参数

生命周期：	Obsolete	零件包装代码：	DIP
包装说明：	DIP,	针数：	8
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.76
Is Samacsys：	N	模拟集成电路 - 其他类型：	SWITCHING CONTROLLER
控制模式：	VOLTAGE-MODE	控制技术：	PULSE WIDTH MODULATION
最大输入电压：	35 V	最小输入电压：	7 V
标称输入电压：	15 V	JESD-30 代码：	R-CDIP-T8
长度：	10.415 mm	功能数量：	1
端子数量：	8	最高工作温度：	125 °C
最低工作温度：	-55 °C	最大输出电流：	0.2 A
封装主体材料：	CERAMIC, METAL-SEALED COFIRED	封装代码：	DIP
封装形状：	RECTANGULAR	封装形式：	IN-LINE
认证状态：	Not Qualified	筛选级别：	MIL-STD-883
座面最大高度：	5.08 mm	表面贴装：	NO
切换器配置：	SINGLE	最大切换频率：	400 kHz
温度等级：	MILITARY	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
宽度：	7.62 mm	Base Number Matches：	1

SG1540Y/883B 数据手册

SG1540/SG2540/SG3540

OFF-LINE START-UP CONTROLLER

DESCRIPTION

FEATURES

The SG1540 is an integrated circuit designed to efficiently provide

start-up power from a high-voltage DC bus to a PWM control circuit

in a switching power supply. When used on the primary side, it

reduces start-up current to less than 1mA and allows any standard

PWM control circuit to be used as a primary-side controller. When

used to power a controller on the secondary side, it efficiently

eliminates the need for a heavy 50/60Hz line transformer with its

associated low frequency magnetic fields.

• Useable with primary and secondary side PWM

controllers

• Micropower comparator / switch

- Internal 2.5V bandgap reference

- 50mA power switch

• Squarewave oscillator

- 500Hz to 200KHz operation

- 200mA totem pole outputs

• Eliminates bulky, expensive 50/60 Hz transformer

• Minimizes high voltage bleeder current

• Programmable start-up voltage and hysteresis

• Internal and programmable overvoltage crowbar

latch

The circuit consists of three sections: a micropower bandgap

comparator/power switch referenced to 2.5 volts which isolates the

start-up capacitor from its load; a high frequency square-wave

oscillator with 200mA totem-pole output for driving an isolation

transformer; and a second bandgap comparator with latching

crowbar to protect against overvoltage faults while starting or

running.

• Available in 8 pin DIP, 10 pin flat pack, and 16 pin

widebody SOIC

HIGH RELIABILITY FEATURES - SG1540

The SG1540 is specified for operation over the full military ambient

temperature range of -55°C to 125°C. The SG2540 is character-

ized for the industrial range of -25°C to 85°C, and the SG3540 is

designed for the commercial range of 0°C to 70°C.

♦ Available to MIL-STD - 883

♦ LMI level "S" processing available

BLOCK DIAGRAM

4/90 Rev 1.1 2/94

LINFINITY Microelectronics Inc.

11861 Western Avenue ∞ Garden Grove, CA 92841

(714) 898-8121 ∞ FAX: (714) 893-2570

12 3 4 5 6

中文翻译

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与SG1540Y/883B相关器件

型号	品牌	获取价格	描述	数据表
SG1542J	MICROSEMI	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, BIPolar, CDIP14
SG1543	MICROSEMI	获取价格	POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT
SG1543	MICROCHIP	获取价格	This monolithic integrated circuit contains all the functions necessary to monitor and con
SG1543_1	MICROSEMI	获取价格	POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT
SG1543J	MICROSEMI	获取价格	POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT
SG1543J/883B	MICROSEMI	获取价格	POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT
SG1543J/DESC	MICROSEMI	获取价格	POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT
SG1543L	MICROSEMI	获取价格	POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT
SG1543L/883B	MICROSEMI	获取价格	POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT
SG1543L/DESC	MICROSEMI	获取价格	Power Supply Support Circuit

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