AN8037

Support improved conformance with energy conservationlaws 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 operationwith 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.