Datasheet > SG3845M-TR

SG3845M-TR

更新时间： 2024-02-10 00:28:33

品牌	Logo	应用领域
美高森美 - MICROSEMI		开关光电二极管
页数	文件大小	规格书
19页	752K
描述
Switching Controller, Current-mode, 1A, PDIP8, DIP-8

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中文翻译

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技术参数
数据手册

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SG3845M-TR 技术参数

生命周期：	Active	包装说明：	DIP,
Reach Compliance Code：	compliant	风险等级：	5.69
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER	控制模式：	CURRENT-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	25 V
最小输入电压：	12 V	标称输入电压：	15 V
JESD-30 代码：	R-PDIP-T8	长度：	10.16 mm
功能数量：	1	端子数量：	8
最高工作温度：	70 °C	最低工作温度：
最大输出电流：	1 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	DIP	封装形状：	RECTANGULAR
封装形式：	IN-LINE	座面最大高度：	5.08 mm
表面贴装：	NO	切换器配置：	SINGLE
温度等级：	COMMERCIAL	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

SG3845M-TR 数据手册

SG1844/SG1845/SG3844/SG3845

Current Mode PWM Controller

Features

Description

Optimized for Off-Line Control

The SG1844/45 family of control ICs provides all the

required 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.

Low Start-Up Current (<1mA)

Automatic Feed Forward Compensation

Trimmed Oscillator

Discharge Current

Pulse-By-Pulse Current Limiting

Enhanced Load Response Characteristics

Undervoltage Lockout with 6V Hysteresis

(SG1844 only)

The Bandgap reference is trimmed to ±1% over

temperature. Oscillator discharge current is trimmed to

less than ±10%. The SG1844/45 has under-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. Both operate up to a maximum duty

cycle range of zero to <50% due to an internal toggle

flip-flop which blanks the output off every other clock

cycle. The SG1844/45 is specified for operation over

the full military ambient temperature range of -55°C to

125°C. The SG3844/45 is designed for the commercial

range of 0°C to 70°C.

Double Pulse Suppression

High-Current Totem-Pole Output

Internally Trimmed Bandgap Reference

500kHz Operation

Under-voltage Lockout

SG1844 - 16 Volts

SG1845 - 8.4 Volts

Low Shoot-through Current <75mA Over

Temperature

Application

. Available to MIL-STD-883

. Available to DSCC

– Standard Microcircuit Drawing (SMD)

. SGR1844/45 Rad-Tolerant Version Available

Product Highlight

R_ST

I_ST

INPUT

V_cc

SG3844

Figure 1 · Product Highlight

November 2014 Rev. 1.7

www.microsemi.com

12 3 4 5 6 7...19

中文翻译

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与SG3845M-TR相关器件

型号	品牌	获取价格	描述	数据表
SG3845N	MICROSEMI	获取价格	CURRENT MODE PWM CONTROLLER
SG3845Y	MICROSEMI	获取价格	CURRENT MODE PWM CONTROLLER
SG3846	MICROSEMI	获取价格	CURRENT MODE PWM CONTROLLER
SG3846	MICROCHIP	获取价格	The SG1846 family of control ICs provides the required features to implement Fixed Frequen
SG3846DW	MICROSEMI	获取价格	CURRENT MODE PWM CONTROLLER
SG3846J	MICROSEMI	获取价格	CURRENT MODE PWM CONTROLLER
SG3846N	MICROSEMI	获取价格	CURRENT MODE PWM CONTROLLER
SG3846Q	MICROSEMI	获取价格	暂无描述
SG3847J	MICROSEMI	获取价格	Switching Controller, Current-mode, 0.5A, 500kHz Switching Freq-Max, CDIP16
SG3847N	MICROSEMI	获取价格	Switching Controller, Current-mode, 0.5A, 500kHz Switching Freq-Max, PDIP16

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