MAX5969B

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IEEE 802.3af/at兼容、受电设备接口控制器，集成功率MOSFET

IEEE 802.3af/at兼容用电设备接口控制器，支持PoE+应用

数据手册 (Rev. 1)
产品模型
2
产品技术资料帮助

ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许，也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。
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    产品详情

    • 兼容于IEEE 802.3af/at
    • 2级事件分级
    • 简易的墙上适配器接口
    • 0至5级PoE分级
    • 100V绝对最大额定输入
    • 180mA最大浪涌电流限制
    • 正常工作期间电流限制在720mA至880mA
    • 电流限制和折返式保护
    • 传统的36V UVLO (MAX5969A)
    • IEEE 802.3af/at兼容，40V UVLO (MAX5969B)
    • 过热保护
    • 增强散热的3mm × 3mm、10引脚TDFN封装
    MAX5969B
    IEEE 802.3af/at兼容、受电设备接口控制器，集成功率MOSFET
    提问

    参考资料

    数据手册 2

    可靠性数据 1

    设计笔记 1

    技术文章 6

    了解更多

    参考电路

    MAXREFDES1175
    MAXREFDES1175
    MAXREFDES1175 参考设计

    PoE Powered Device and 5V/1.4A No-Opto Flyback DC-DC Converter Using the MAX17690 and MAX5969B

    查看参考设计详情

    特性和优点

    • IEEE 802.3af/at Compliance
    • Thermally Enhanced, 3mm × 3mm, 10-Pin TDFN Package (MAX5969B)
    • 30V to 60V Input Voltage Range
    • Programmable Switching Frequency from 50kHz to 250kHz
    • Programmable Input Enable/UVLO Feature
    • Programmable Input Overvoltage Protection
    • Adjustable Soft-Start
    • 2A/4A Peak Source/Sink Gate Drive Capability
    • Hiccup Mode Short-Circuit Protection
    • Fast Cycle-by-Cycle Peak Current Limit
    • Thermal Shutdown Protection
    • Space-Saving, 16-Pin, 3mm × 3mm TQFN Package
    • -40°C to +125°C Operating Temperature Range
    maxrefdes1206-figure 1
    maxrefdes1206-figure 1
    MAXREFDES1206 参考设计

    PoE Powered Device and 24V/1A Active Clamp Forward DC-DC Converter Using the MAX5974C and MAX5969B

    查看参考设计详情

    特性和优点

    • Programmable Switching Frequency from 100kHz to 600kHz
    • Programmable Frequency Dithering for Low-EMI, Spread-Spectrum Operation
    • Programmable Dead Time, PWM Soft-Start, Current Slope Compensation
    • Programmable Feed-Forward Maximum Duty-Cycle Clamp, 80% Maximum Limit
    • Frequency Foldback for High-Efficiency Light-Load Operation
    • Internal Bootstrap UVLO with Large Hysteresis
    • 100μA (typ) Startup Supply Current
    • Fast Cycle-by-Cycle Peak Current-Limit, of 5V and35ns Typical Propagation Delay
    • 115ns Current-Sense Internal Leading-Edge Blanking
    • Output Short-Circuit Protection with Hiccup Mode
    • Reverse Current Limit to Prevent Transformer Saturation Due to Reverse Current
    maxrefdes1177 figure 1
    maxrefdes1177 figure 1
    MAXREFDES1177 参考设计

    PoE Powered Device and 12V/600mA No-Opto Flyback DC-DC Converter Using the MAX17690 and MAX5969B

    查看参考设计详情

    特性和优点

    • IEEE 802.3af/at Compliance
    • Thermally Enhanced, 3mm × 3mm, 10-Pin TDFN Package (MAX5969B)
    • 30V to 60V Input Voltage Range
    • Programmable Switching Frequency from 50kHz to 250kHz
    • Programmable Input Enable/UVLO Feature
    • Programmable Input Overvoltage Protection
    • Adjustable Soft-Start
    • 2A/4A Peak Source/Sink Gate Drive Capability
    • Hiccup Mode Short-Circuit Protection
    • Fast Cycle-by-Cycle Peak Current Limit
    • Thermal Shutdown Protection
    • Space-Saving, 16-Pin, 3mm × 3mm TQFN Package
    • -40°C to +125°C Operating Temperature Range
    maxrefdes36-image1
    maxrefdes36-image1
    maxrefdes36-image2
    MAXREFDES31 参考设计

    3.3V and 5V PoE Powered Device

    查看参考设计详情

    特性和优点

    Features:

    • IEEE 802.3af/at compliant
    • Dual output
    • Tight line regulation
    • Low ripple
    • Excellent load transient response
    • High efficiency

    Applications:

    • Security cameras
    • Wireless access points
    • Point of sale terminals
    MAXREFDES1273
    MAXREFDES1273
    MAXREFDES1273 参考设计

    PoE Powered Device and 48V 850mA Active Clamp Forward DC DC Converter Using the MAX5974C and MAX5969B

    查看参考设计详情

    特性和优点

    • Programmable switching frequency from 100kHz to 600kHz
    • Programmable frequency dithering for low-EMI, spread-spectrum operation
    • Programmable dead time, PWM soft-start, current slope compensation
    • Programmable feed-forward maximum duty-cycle clamp, 80% maximum limit
    • Frequency foldback for high-efficiency light-load operation
    • Internal bootstrap UVLO with large hysteresis
    • 100μA (typ) startup supply current
    • Fast cycle-by-cycle peak current-limit, 35ns typical propagation delay
    • 115ns current-sense internal leading-edge blanking
    • Output short-circuit protection with hiccup mode
    • Reverse current limit to prevent transformer saturation due to reverse current
    maxrefdes1176
    maxrefdes1176
    MAXREFDES1176 参考设计

    PoE Powered Device and Synchronous 5V/1.4A No-Opto Flyback DC-DC Converter Using the MAX17690, MAX17606, and MAX5969B

    查看参考设计详情

    特性和优点

    • IEEE® 802.3af/at Compliance
    • Thermally Enhanced, 3mm × 3mm, 10-Pin TDFN Package (MAX5969B)
    • 30V to 60V Input Voltage Range
    • Programmable Switching Frequency from 50kHz to 250kHz
    • Programmable Input Enable/UVLO Feature
    • Programmable Input Overvoltage Protection
    • Adjustable Soft-Start
    • 2A/4A Peak Source/Sink Gate Drive Capability
    • Hiccup Mode Short-Circuit Protection
    • Fast Cycle-by-Cycle Peak Current Limit
    • Thermal Shutdown Protection
    • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
    • -40°C to +125°C Operating Temperature Range
    maxrefdes1178 image 1
    maxrefdes1178 image 1
    MAXREFDES1178 参考设计

    PoE Powered Device and Synchronous 12V/600mA No-Opto Flyback DC-DC Converter Using the MAX17690, MAX17606, and MAX5969B

    查看参考设计详情

    特性和优点

    • IEEE® 802.3af/at Compliance
    • Thermally Enhanced, 3mm × 3mm, 10-Pin TDFN Package (MAX5969B)
    • 30V to 60V Input Voltage Range
    • Programmable Switching Frequency from 50kHz to 250kHz
    • Programmable Input Enable/UVLO Feature
    • Programmable Input Overvoltage Protection
    • Adjustable Soft-Start
    • 2A/4A Peak Source/Sink Gate Drive Capability
    • Hiccup Mode Short-Circuit Protection
    • Fast Cycle-by-Cycle Peak Current Limit
    • Thermal Shutdown Protection
    • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
    • -40°C to +125°C Operating Temperature Range
    MAXREFDES1175
    PoE Powered Device and 5V/1.4A No-Opto Flyback DC-DC Converter Using the MAX17690 and MAX5969B
    MAXREFDES1206
    PoE Powered Device and 24V/1A Active Clamp Forward DC-DC Converter Using the MAX5974C and MAX5969B
    MAXREFDES1177
    PoE Powered Device and 12V/600mA No-Opto Flyback DC-DC Converter Using the MAX17690 and MAX5969B
    MAXREFDES31
    3.3V and 5V PoE Powered Device
    MAXREFDES1273
    PoE Powered Device and 48V 850mA Active Clamp Forward DC DC Converter Using the MAX5974C and MAX5969B
    MAXREFDES1176
    PoE Powered Device and Synchronous 5V/1.4A No-Opto Flyback DC-DC Converter Using the MAX17690, MAX17606, and MAX5969B
    MAXREFDES1178
    PoE Powered Device and Synchronous 12V/600mA No-Opto Flyback DC-DC Converter Using the MAX17690, MAX17606, and MAX5969B

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