The NCP1136 switcher integrates a fixed−frequency peak current

mode controller with a low on−resistance, 800 V MOSFET. Available

in a PDIP−7 package, the NCP1136 offers a high level of integration,

including soft−start, frequency−jittering, short−circuit protection,

thermal shutdown protection, frequency foldback mode and

skip−cycle to reduce power consumption in light load condition, peak

current mode control with adjustable internal ramp compensation and

adjustable peak current set point.

During nominal load operation, the part switches at one of the

available frequencies (65 or 100 kHz). When the output power

demand diminishes, the IC automatically enters frequency foldback

mode and provides excellent efficiency at light loads. When the power

demand reduces further, it enters into a skip mode to reduce the

standby consumption down to no load condition.

Protection features include: a timer to detect an overload or a

short−circuit event with auto−recovery or latch protection, and a

built−in VCC overvoltage protection.

The switcher also provides a jittered 65 kHz or 100 kHz switching

frequency to improve the EMI.

Features

• Built−in 800 V, 2.5 A MOSFET with RDS(on) of 3.7  for NCP1136

• Fixed−Frequency 65 or 100 kHz Current−Mode Control with

Adjustable Internal Ramp Compensation

• Adjustable Current Limit with External Resistor

• Frequency Foldback Down to 26 kHz and Skip−Cycle for Light Load

Efficiency

• Frequency Jittering for EMI Improvement

• Less than 100 mW Standby Power @ High Line

• EPS 2.0 Compliant

• 7−Pin Package Provides Creepage Distance

• These are Pb−Free Devices

NCP1136属于集成电路（IC） > AC DC 转换器，离线开关。安森美半导体公司制造生产的NCP1136AC DC 转换器，离线开关该系列是元器件级控制产品，用于构建将交流市电转换为直流电（通常电压大幅降低）的设备。集成和未集成系统主要开关元件的器件均包括在内。由于高输入输出电压比，以及此类系统中通常需要隔离，这些器件通常与外部变压器配合使用。尽管通常使用定制变压器来实现此用途，但也有许多专门用于此用途的库存产品，请参见“开关转换器，SMPS 变压器”标题。