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    NCP1256

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     Low Power Offline PWM Current Mode Controller with Brown-Out Protection

    制造商:ON

    中文数据手册

    产品信息

    The NCP1256 includes everything to build cost-effective switch mode power supplies ranging from a few watts up to several tens of watts. Housed in a tiny TSOP-6 package, the part can be supplied up to 30 V. It hosts a jittered 65 or 100-kHz switching circuitry operated in peak current mode control. When the power in the secondary side starts to decrease, the controller automatically folds back its switching frequency down to a minimum level of 26 kHz. As the power further goes down, the part enters skip cycle while limiting the peak current. NCP1256 comes with several protection features such as a timer-based auto-recovery short circuit protection, lossless OPP, and an easily adjustable Brown Out (BO) pin. Two inputs are provided to latch off the part in a practical way, for instance with OVP and OTP events. Several options exists to chose latch or auto-recovery.
    • Frequency Foldback down to 26 kHz and Skip−cycle in Light Load Conditions
    • 70−ms Timer−based Auto−recovery Short−circuit Protection
    • Frequency Jittering in Normal and Frequency Foldback Modes
    • +500 mA/ −500 mA Source/Sink Drive Capability
    • Pb−Free Device
    • Fixed−frequency 65−kHz or 100−kHz Current−mode Control Operation
    • Adjustable Over Power Protection (OPP) Circuit, Disabled at Low Line
    • Adjustable Brown Out Level
    • Internally−fixed Slope Compensation Ramp
    • Internally−fixed 4−ms Soft−start
    • Double Hiccup Auto−recovery Short−circuit Protection
    • Pre−short Ready for Latched OCP Option
    • Latched OVP Protection on Vcc
    • Latched Inputs for Improved Robustness (OVP and OTP implementations)
    • EPS 2.0 Compliant

    在线购买

    型号制造商描述购买
    NCP1256BSN65T1GONICOFFLNCONVFLYBACK6TSOP 立即购买
    NCP1256BSN100T1G-- 立即购买
    NCP1256ASN65T1G-- 立即购买
    NCP1256ASN100T1G-- 立即购买

    技术资料

    标题类型大小(KB)下载
    TSOP-6PDF62 点击下载
    A 60 W AC-DC Demonstrator with NCP1256PDF367 点击下载
    Standby Power Performance of NCP1256PDF428 点击下载
    The NCP1256, a Tiny Controller for Offline ConvertersPDF829 点击下载
    Low Power Offline PWM Current Mode Controller with Brown-Out ProtectionPDF392 点击下载
    NCP1256B60WGEVB Bill of Materials ROHS CompliantPDF254 点击下载
    NCP1256B60WGEVB SchematicPDF313 点击下载
    NCP1256B60WGEVB Gerber layout Files (Zip Format)RAR233 点击下载

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