Senin, 12 Desember 2016

Jual IC AN8037

AN8037

AC-DC switching power supply control IC with standby mode

■ Overview The AN8027 and AN8037 are ICs developed for selfexcited switching regulator of RCC local resonance control type. These ICs are designed to achieve stability and high efficiency over a wide input voltage range and loads range (light loads to heavy loads), for supporting input levels used worldwide and                                                                 improved conformance with energy conservation laws.
■ Features • Support improved conformance with energy conservation laws by providing two          operating modes.
• Standby mode (light loads): Achieves better efficiency due to reduced frequency .
• Normal mode: Achieves high efficiency in RCC local resonance operation with zero-cross detection.
• Incorporating an input voltage compensation function available to a wide input range for worldwide use.
• This function compensates the maximum on-period in inverse proportion to the input voltage. • Incorporating a timer latch function.
• The time period can be adjusted according to the overload in normal mode or standby mode.
• This function makes it possible to protect the IC from damage that may be caused by the short-circuiting of the IC's external capacitor for the timer.
• Incorporating an overvoltage protection function. (detects at VCC pin)
• Incorporating a pulse-by-pulse overcurrent protection function, which makes latch protection possible at the time of the short-circuiting of the transformer's primary winding.
• Adopting a 9-pin single inline package (E-9S: available to manufacturing in overseas).
• AN8027: Transformer resetting is detected from the high- or low-level signal on the TR pin.
• AN8037: Transformer resetting is detected from the falling edge of the high-level signal on the TR pin. Refer to the "[1] operation descriptions 7. local resonance operation" section in the application notes



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