FA5604N Datasheet | Fuji Electric

Overview The FA5604N/05N/06N/07N is the PWM type switching power supply control IC that can directly drive power MOSFET. This IC realizes the low power consumption with reducing the switching frequency at light load(FA5604N,05N,06N). This IC contains many functions in a small 8-pin package. With this IC, a high-performance and pact power supply can be created because not many external discrete ponents are needed. 2. Features - Voltage mode control - Systems organized by circuit methods FA5604N: Applied to forward power supplies (maximum duty cycle = 46%) FA5605N/FA5606N/FA5607N: Applied to flyback power supplies (maximum duty cycle = 70%) - Automatically reduces the switching frequency to suppress loss in stand-by mode - The switching frequency can be set (RT pin) - A drive circuit for connecting a power MOSFET directly - Output peak current: +1.0A / -0.5A - Overcurrent of primary side limiting function (IS pin negative voltage sense) - Overload protection function (switching frequency control by VF pin) - Overload protection function (CS pin) - Built-in output overvoltage latch protection (stopping the latch by pulling up the CS terminal by external signals) - Undervoltage lockout function (17.5V ON / 9.7V OFF) - 8-pin package (SOP-8) 5.0±0.25 Package：SOP-8 1.8MAX 3.90±0.20 6.00±0.20 Function list by type type Max. duty cycle(typ) 46% FA5605N FA5606N 70% FA5607N Frequency reduction mode at light-load FB voltage: 1.8 V/1.95 V FB voltage: 1.55 V/1.65 V ― Hiccup operation at overload Operation period: shutdown period = 1:7 Operation period: shutdown period = 1:15 Operation period: shutdown period = 1:7 Overcurrent detection Package Negative voltage detection SOP-8 3. Application circuit...