AN8029

Voltage Regulators AN8029 Self-excited RCC pseudo-resonance type AC-DC switching power supply control IC s Overview The AN8029 is an IC developed for controlling the self-excited switching power supply employing the RCC pseudo-resonance type control method. It is compact, equipped only with the necessary minimum functions. The maximum on-period and the minimum off-period can be set separately by using the external capacitor and resistor respectively. It is suitable for the power supply of AV equipment. 2.4±0.25 6.0±0.3 3.3±0.25 Unit: mm 8 0.5±0.1 7 23.3±0.3 6 5 4 1.5±0.25 1.5±0.25 1.4±0.3 2 1 0.3 +0.1 –0.05 s Features Operating supply voltage range: 3.0±0.3 Stop voltage (8.6 V typical) to 34 V SIP009-P-0000C Output block employs the totem pole system. Power MOSFET can be directly driven. (output peak current: ±1 A maximum) Small pre-start operating current (95 µA typical) allows using a small size start resistor. Built-in pulse-by-pulse overcurrent protection function Incorporating the protection circuit against malfunction at low voltage (start/stop: 14.9 V/8.6 V) Built-in overvoltage protection function (externally resettable) Built-in timer latch function Equipped with frequency (VF) control function. 9-pin single inline package expands the freedom of board design s Applications Televisions, facsimiles, printers, scanners, video equipment VCC s Block Diagram Signal U.V.L.O. 8.6 1.5 V V TIM/OVP FB 8 9 TIM VREF (7.1 V) 7 Current source Swit...