Nisshinbo Micro Devices Inc. Voltage Regulators - DC DC Switching Regulators R1242S001F-E2-FE

The R1242S001F-E2-FE is a synchronous rectified step-down DC/DC converter designed for a wide input voltage range of 5 V to 30 V and capable of delivering up to 3 A output current. It features a built-in high-side switch with a low on-resistance of approximately 0.1 ,Ѷ, which helps minimize heat generation. The output voltage is adjustable from 0.8 V to 15 V using external resistors, and the device operates with a current mode topology that eliminates the need for a sense resistor, enhancing speed and efficiency. The oscillator frequency for this version is fixed at 500 kHz, and it includes several protection features such as peak current limit (4.5 A), thermal shutdown (typically at 160¬8C), and undervoltage lockout (UVLO) with a threshold of 3.6 V. The device also offers soft-start functionality with a typical time of 0.5 ms. The R1242S001F-E2-FE is packaged in an HSOP-8E format, making it suitable for various applications, including digital home appliances, office automation equipment, and battery-powered devices.