NCP1256: Low Power Offline PWM Current Mode Controller with Brown-Out Protection

具体说明: The NCP1256 includes everything to build cost-effe...
  • 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.
  • 特性
  • Frequency Foldback down to 26 kHz and Skip−cycle in Light Load Conditions - More efficient light load operation
  • 70−ms Timer−based Auto−recovery Short−circuit Protection - Short circuit operation for safety yet reliable with auto-recovery for flexible restart
  • Frequency Jittering in Normal and Frequency Foldback Modes - Jitter reduces EMI by spreading the switching sprectrum over a wider band
  • +500 mA/ −500 mA Source/Sink Drive Capability - Ability to drive larger FETs
  • Pb−Free Device - Environment friendly
  • 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
  • 应用
  • Ac−dc Adapters for Portable Devices
  • Ac−dc Adapters for Computers
  • Ac−dc Adapters for Tablets
  • General Ac−dc Adapters
  • 终端产品
  • Ac-dc Adapters
  • 技术文档及设计资源
    评估/开发工具信息
    供货情况和样品
    NCP1256ASN100T1G
  • 状况: Active
  • Compliance: Pb-free Halide free 
  • 具体说明: Low Power Offline PWM Current Mode Controller with Brown-Out Protection
  • 封装 类型: TSOP-6
  • 封装 外形: 318G-02
  • MSL: 3
  • 容器 类型: REEL
  • 容器 数量: 3000
  • 库存

  • Market Leadtime (weeks):2 to 4
  • Arrow:0
  • ON Semiconductor:444,000
  • NCP1256ASN65T1G
  • 状况: Active
  • Compliance: Pb-free Halide free 
  • 具体说明: Low Power Offline PWM Current Mode Controller with Brown-Out Protection
  • 封装 类型: TSOP-6
  • 封装 外形: 318G-02
  • MSL: 3
  • 容器 类型: REEL
  • 容器 数量: 3000
  • 库存

  • Market Leadtime (weeks):2 to 4
  • Arrow:0
  • ON Semiconductor:1,287,000
  • NCP1256BSN100T1G
  • 状况: Active
  • Compliance: Pb-free Halide free 
  • 具体说明: Low Power Offline PWM Current Mode Controller with Brown-Out Protection
  • 封装 类型: TSOP-6
  • 封装 外形: 318G-02
  • MSL: 3
  • 容器 类型: REEL
  • 容器 数量: 3000
  • 库存

  • Market Leadtime (weeks):2 to 4
  • Arrow:0
  • ON Semiconductor:24,000
  • NCP1256BSN65T1G
  • 状况: Active
  • Compliance: Pb-free Halide free 
  • 具体说明: Low Power Offline PWM Current Mode Controller with Brown-Out Protection
  • 封装 类型: TSOP-6
  • 封装 外形: 318G-02
  • MSL: 3
  • 容器 类型: REEL
  • 容器 数量: 3000
  • NCP1256ESN65T1G
  • 状况: Active
  • Compliance: Pb-free Halide free 
  • 具体说明: Low Power Offline PWM Current Mode Controller with Brown-Out Protection
  • 封装 类型: TSOP-6
  • 封装 外形: 318G-02
  • MSL: 3
  • 容器 类型: REEL
  • 容器 数量: 3000
  • Specifications
  • Topology: Flyback 
  • Control Mode: Current Mode 
  • fsw Typ (kHz): 100  65 
  • Stand-by Mode: Yes 
  • UVLO (V): 8.3 
  • Short Circuit Protection: Yes 
  • Latch: Yes  No 
  • Soft Start: Yes 
  • VCC Max (V): 35 
  • Drive Cap. (mA): 500 / 500 
  • Package Type: TSOP-6 
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