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SG1845数据手册集成电路(IC)的PMIC-稳压器-DCDC开关式控制器规格书PDF

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厂商型号

SG1845

参数属性

SG1845 封装/外壳为10-CFlatPack;包装为托盘;类别为集成电路(IC)的PMIC-稳压器-DCDC开关式控制器;产品描述:CURRENT MODE PWMS, HIGH-RELIABIL

功能描述

升压/降压
Current Mode PWMs Isolated Switching Regulators Off-line, 8.4 Volts -55°Cto125°C
CURRENT MODE PWMS, HIGH-RELIABIL

封装外壳

10-CFlatPack

制造商

Microchip Microchip Technology

中文名称

微芯科技 微芯科技股份有限公司

数据手册

原厂下载下载地址下载地址二

更新时间

2025-8-8 18:00:00

人工找货

SG1845价格和库存,欢迎联系客服免费人工找货

SG1845规格书详情

描述 Description

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. 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 Nchannel 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.Microchip Ordering Part  Standard Microcircuit Drawing (SMD) SG1845F-DESC Cross Reference 5962-8670404HASG1845F-DESC Cross Reference 5962-8670404HXSG1845J-DESC Cross Reference 5962-8670404CASG1845J-DESC Cross Reference 5962-8670404CXSG1845L-DESC Cross Reference 5962-86704042ASG1845L-DESC Cross Reference 5962-86704042XSG1845Y-DESC Cross Reference 5962-8670404PASG1845Y-DESC Cross Reference 5962-8670404PX

特性 Features

Optimized For Off-Line Control
Low Start-Up Current (Automatic Feed Forward Compensation
Trimmed Oscillator Discharge Current
Pulse-By-Pulse Current Limiting
Enhanced Load Response Characteristics -Undervoltage Lockout with 6V Hysteresis
Double-Pulse Suppression
High-Current Totem-Pole Output (1A Peak)
Internally Trimmed Band-gap Reference
500kHz Operation SG1845 - 8.4 Volts
Low Shoot-Through Current <75mA Over Temperature

简介

SG1845属于集成电路(IC)的PMIC-稳压器-DCDC开关式控制器。由制造生产的SG1845DC-DC 开关控制器PMIC(电源管理集成电路)DC 到 DC 开关式控制器是用于高效率电路的稳压 IC,其配置为生成高于(突升或步升)或低于(突降或步降)输入电源的输出电源电压。其他拓扑结构可能包括:降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。

技术参数

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  • 产品编号:

    SG1845F-DESC

  • 制造商:

    Microchip Technology

  • 类别:

    集成电路(IC) > PMIC - 稳压器 - DC DC 开关式控制器

  • 系列:

    Military, MIL-STD-883

  • 包装:

    托盘

  • 输出类型:

    晶体管驱动器

  • 功能:

    升压/降压

  • 输出配置:

    正,可提供隔离

  • 拓扑:

    反激

  • 输出阶段:

    1

  • 电压 - 供电 (Vcc/Vdd):

    7.6V ~ 30V

  • 频率 - 开关:

    100Hz ~ 500kHz

  • 占空比(最大):

    48%

  • 同步整流器:

  • 时钟同步:

  • 工作温度:

    -55°C ~ 125°C(TA)

  • 安装类型:

    表面贴装型

  • 封装/外壳:

    10-CFlatPack

  • 供应商器件封装:

    10-CFlatPack

  • 描述:

    CURRENT MODE PWMS, HIGH-RELIABIL

供应商 型号 品牌 批号 封装 库存 备注 价格
Microc
25+
25000
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24+
SMD
1680
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DIP-8
9630
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25+
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11200
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25+23+
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29045
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最新
2000
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7000
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